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|Publication number
|Publication type
|Application number
|Publication date
|Sep 11, 2008
|Filing date
|Oct 26, 2007
|Priority date
|Oct 27, 2006
|Also published as
|Publication number
|P. Alexander Derchak, Lance Jonathan Myers
|Original Assignee
|Derchak P Alexander, Lance Jonathan Myers
|Export Citation
|BiBTeX, EndNote, RefMan
|Patent Citations (16), Referenced by (40), Classifications (10), Legal Events (3)
|External Links: USPTO, USPTO Assignment, Espacenet
This application claims the benefit of U.S. Provisional Application No. 60/863,216, filed on Oct. 27, 2006, the entire content of which is expressly incorporated herein by reference thereto.
The present invention relates to a system and method for real-time physiological monitoring to identify emotional states of a person. More particularly, the invention relates to identification of emotional states based on measured physiological responses of a person.
Known methods of determining a person's emotional states generally require the monitored individuals to report on their own emotional states (self-reporting). For example, such information can be gathered by surveying the individual, either orally or by written questionnaire, after exposing the individual to an emotive stimulus or a series of stimuli. This method of quantification, however, is dependent on an individual's memory and perception of his own responses. The results, at best, provide an overall estimation of the person's previous emotional states, and will likely be more heavily influenced by the latter or more recent portions of the stimuli.
Other methods of determining a person's emotional states include development of an individual response/feedback pad or input configured for self-actuation by the individual. For example, the individual is typically exposed to a series of stimuli over a defined period, such as by watching a movie. During this period of exposure, the individual is instructed to touch a key on the pad to indicate a particular emotion or set of emotions that he may be feeling. While the results of this method may reflect a more correlated data set with respect to the stimulus/response effect, real-time monitoring is still not achieved. Additionally, this approach is limited in that it is dependent on individuals being aware of their own emotions, which may change frequently and subtly, and even at a subconscious level. Thus, the individual's self-reported response data likely only reflects relative extremes of emotion, and the temporal nature of the responses will only reflect the times at which these emotions reach a level where they are consciously perceived.
Thus, there remains a need for systems and methods for automatically and continuously monitoring a person to identify, in real-time, emotional states of the person without relying on self-reporting.
The present invention is directed to systems and methods of automatically identifying the emotional state of a person in real-time. A preferred method includes exposing a person to a stimulus, measuring the person's physiological response to the stimulus, and comparing the measured physiological response to a known physiological response patterns associated with various emotional states. The pattern of deviations of the measured physiological response from a baseline physiological response is determinative of an emotional state. Preferably, the baseline physiological responses are measured in the person when exposed to a neutral stimulus.
In the preferred embodiment, the measured physiological responses include one or more respiratory responses. Preferably, the measured respiratory responses include a measure of breath to breath variability, and more preferably includes a sample entropy. The measured respiratory responses may include, for example, a respiratory rate, a minute ventilation rate, a tidal volume, a tidal volume instability, an inspiratory flow rate, an expiratory flow rate, an inspiratory pause, and expiratory pause, a presence of cough, and presence of apnea or hypopnea, or a combination thereof.
In other embodiments, the measured physiological responses also include a cardiac response, a posture/activity response, a temperature response, a galvanic skin response, an EEG response, an EOG response, an EMG response, and a vocal response, or a combination thereof. Preferably, the cardiac responses include an ECG response, an RSA response, a heart rate response, and a heart rate variability response, or a combination thereof.
The identified emotional states include, for example, neutrality or indifference, fear, anxiety, excitement, happiness, sadness, attentiveness, anticipation, boredom, anger, pleasure, or calmness. The emotional state may also include a measure of the degree to which the person is engaged with, concentrated on, or focused on the stimulus.
Preferably, the baseline physiological responses are measured in the person when exposed to a stimulus known as likely to elicit a selected emotional state, and where the emotional state of the person is subsequently identified as likely to be the selected emotional state when the measured physiological responses significantly similar to the baseline physiological responses. More preferably, two sets of responses are significantly similar when the likelihood that the similarity is due to chance is less than a selected threshold.
Preferably, the method for identifying an emotional state of a person is computer-implemented. For example, one embodiment of the present invention is a monitoring system for automatically identifying an emotional state of a person in real-time. The system includes a processor, a computer readable memory operatively coupled to the processor and configured with instructions for causing the processor to perform a method for identifying emotional states, and a physiological monitoring device operatively coupled to the processor for measuring the person's physiological response. Preferably, the device is configured and arranged for monitoring an ambulatory subject. More preferably, the processor correlates the time of exposure to the stimulus and the type of stimulus with the measured physiological response.
In another preferred embodiment of the present invention, the method for automatically identifying an emotional state of a person in real-time includes exposing a person to a stimulus, measuring the person's physiological responses to the stimulus, classifying the measured responses into one or more classes by means of a classifier trained to recognize patterns of physiological responses occurring in a plurality of emotional states, and identifying a likely emotional state in dependence on the classes into which the measured responses have been classified. Preferably, the pattern of measured physiological responses includes deviations of the measured responses from baseline physiological responses, the baseline physiological responses being characteristic of an emotional state.
In another embodiment, the classifier training further includes measuring physiological responses one or more emotional states, determining feature vectors that characterize the emotional states, and grouping the determined feature vectors into groups that characterize the emotional states, the grouping including use of a learning algorithm. The method can also include scaling the determined feature vectors, or applying dimension-reduction analysis to the determined feature vectors, or both scaling and applying dimension-reduction analysis to the determined feature vectors. Preferably, the learning algorithm includes a kernel machine algorithm. The classifier training may also include extracting the determined feature vectors from the measured physiological responses, the determined feature vectors being those determined during classifier training, and applying the trained classifier to the extracted feature vectors. Preferably, scaling the extracted feature vectors, or applying dimension-reduction analysis to the extracted feature vectors, or both scaling and applying dimension-reduction analysis to the extracted feature vectors is also performed.
One of the advantages of this invention is that it eliminates potentially confounding factors associated with self-reporting (i.e., surveys, a response "box", and so forth). These confounding factors include temporal dislocation of emotional state and the act or reporting, emotional-state distortion by the intervening conscious act of self-reporting, faulty memory, suggestion, and so forth. Instead the present invention provides systems and methods of continuously and automatically monitoring physiological responses of a person to determine real-time emotional states thereof. The monitored person need not perform any conscious personal acts so that both conscious and sub-conscious emotional states can be captured.
This invention is useful in such applications as audience monitoring of various sorts. For example, it can be used to monitor audience responses to movies, plays, performances, and the like. Also it can be used to monitor responses to television programs, advertisements, radio presentations, and any other presentation of information by any media which may elicit an emotional response from individuals to which it is exposed.
This invention can also be applied to product displays and evaluations. It can be useful to monitor emotional responses to product packaging, product display, product appearance, during use of novel or established products, and so forth.
The present invention may be understood more fully by reference to the following detailed description of preferred embodiments of the present invention, illustrative examples of specific embodiments of the invention, and the appended figures in which:
The present invention is directed to a system and method of identifying an emotional state that a person is experiencing, preferably in real-time. Preferred monitoring systems for identifying emotional states are described, as well as preferred methods of using such systems therefore.
Preferably, the physiological monitoring systems are ambulatory systems configured so that a person is not appreciably constrained. The ambulatory monitoring systems are also preferably configured for use without assistance by trained personnel. The monitoring systems include sensors, as generally known to one of ordinary skill in the art, that can be constructed according to the many known technologies useful for non-invasive physiological sensing. Preferably, selected sensors have sufficient accuracy and precision, both in amplitude and response time (i.e. bandwidth), so that the gathered signals actually reflect the physiological systems and processes of interest. The sensors preferably have clinically confirmed accuracies and precisions. A preferred ambulatory physiological monitoring system configuration includes a wearable item, for example, a garment, band, patch, and the like, or associations with partial-shirts or shirts, on partial body suits, or in full body suits that are unobtrusive, comfortable, and preferably made of non-restricting fabric into which sensors are incorporated.
An exemplary ambulatory monitoring system is illustrated in
In a preferred embodiment, an exemplary garment 1 is a LIFESHIRT� ambulatory monitoring garment available from VivoMetrics, Inc. (Ventura, Calif.). In other embodiments, the data processed by this invention can be gathered by other sensor technologies known in the art, and by other dispositions and arrangements of such sensors on the monitored person. However, for conciseness and without limitation, the following description is largely in terms of this preferred embodiment of the monitoring garment and associated system components.
The garment 1 preferably includes size sensors, and more preferably, the sensors include inductive plethysmographic (IP) sensor bands 5 and 7 (or other sensor types providing respiratory rate and volume information), one or more accelerometers and the like for sensing body posture and motion, for example exemplary accelerometer 11, and one or more microphones for detecting vocal and body sound, such as throat microphone 14. "Size sensors" gather signals responsive to size indicia describing portions of a monitored person's body, e.g., the torso, the neck, the extremities, or parts thereof. Size indicia can include the length along a selected portion of the body surface; the circumference or diameter of a body part; and the like. Garment 1 is preferably made of a stretchable material that fits in a manner so as to expand and contract with a person's body so that embedded IP sensor bands (which, for respiratory measurement, are known as respiratory inductive plethysmographic, or RIP, bands) can respond to the varying sizes of a monitored person, e.g., varying circumferences/girths or lengths of the person's torso and abdomen. One RIP band is adequate, but preferably two RIP bands are used: band 5 at the level of the rib cage, and band 7 at the level of the abdomen.
Size sensor signals can be processed to yield information about organ system functioning. Signals from size sensors at one or more levels of the torso, e.g., at an abdominal level and at a rib cage level, can be interpreted using a two-component breathing model in order to determine respiratory rates, respiratory volumes, respiratory events, and the like. U.S. Pat. Nos. 6,551,252; 5,159,935; and 4,777,962, and U.S. patent application Ser. No. 10/822,260, which are incorporated herein in their entireties for all purposes by reference thereto, describe such signal processing.
Also, the garment 1 can include sensors for monitoring cardiac information, such as heart rate, ECG, or thoracocardiaogram. See, e.g., U.S. Pat. Nos. 5,178,151 and 6,783,498. Other sensors can include thermistors that can sense skin or body core temperature; pulse oximeters that can sense blood oxygen level; capnographs; EEG electrodes (illustrated as 9 a and 9 b); ultrasound transducers for blood flow or organ pulsations, and so forth. EMG and EOG signals can be obtained from EMG and EOG sensors that are also preferably included in the garment 1, such as single bipolar (parietally-located) EMG sensor 15 and single-lead EOG sensor 13. The EMG and EOG sensors are preferably in electrical communication with garment 1, for example by means of electrode 17. These electrodes are preferably made of fabric, or are otherwise flexible, and provide sufficient electrical contact without the need for conductivity enhancements, such as pastes, fluids, and the like. In the hospital, clinic, or laboratory settings, other signals may be obtained from a wide range of physiological sensors.
Associated locally with exemplary garment 1 is local data recording unit 3 operatively connected to sensors of the garment 1 by data cable 2. In other embodiments, the recording unit may be operatively connected to the sensors by, for example, short range radio link. Data recording unit 3 is preferably compact and lightweight so that it can be worn on a belt, put in a pocket, or embedded in garment 1. This unit stores sensor data with sufficient accuracy and precision for such purposes as off-line analysis and medical disclosure audits, and may include a touch screen or other user input facility for implementing a digital diary whose data may also be transferred to the analysis computer for correlation with sensor readings.
Initial sensor signal processing generally includes filtering, digitization, noise limiting, extraction of physiological signal components, and the like. Following initial processing, specific processing according to the methods of this invention of respiratory size sensor signals, other sensor signals, and microphone sound data signals, for example, are preferably performed to identify emotional states according to the methods of this invention. For example, processing respiratory signals includes calibration, determination of a tidal volume signal, and extraction of respiratory events from the tidal volume signal. U.S. Pat. Nos. 6,413,225; 5,159,935; 4,834,766; and 4,777,962, and U.S. patent application Ser. No. 10/822,260, all of which are incorporated herein in their entirety for all purposes by reference thereto, describe such respiratory processing.
Signals from additional sensors are processed as appropriate. For example, R-waves can be recognized in ECG signals using known methods, and then cardiac rates and rate variability can be extracted. Electroencephalogram and similar signals can be stored for later manual grading and analysis. Accelerometer signals can be low and high pass filtered to extract posture information and activity level information, respectively. U.S. patent application Ser. No. 10/991,877 describes such signal processing.
In one embodiment, basic signal processing, e.g. filtering and digitization, is performed in the data recording unit 3. In preferred embodiments, the data recording unit also extracts physiological information and performs the methods of this invention. The methods of the present invention can be implemented by analysis software that is executed on analysis computers, such as computer 21, which may be remotely located from the subject or even at an observation locale. Analysis can be done either concurrently with signal recording (online) or at a later time (offline). For offline analysis, sensor data can be transferred from data recording unit 3 to analysis computer 21 on memory card 19, such as a compact flash card. Data may alternatively be transferred by wireless links, such as transmission using cell phone technologies and the like.
Specifically, the methods of the present invention are preferably performed on software or firmware programmable systems. In the case of software programming, methods are preferably coded in standard computer languages, such as C, C++, or in high level application languages, such as Matlab and associated toolboxes (Math Works, Natick, Mass.). Code is then translated or compiled into executable computer instructions for controlling a microprocessor or similar device. In the case of firmware programming, higher level method specifications written in software languages or hardware languages such as VHDL, are preferably translated into bit codes by tools supplied by the manufacturer of the hardware part that is being programmed. For example, manufacturer's tools can be used to prepare bit-streams for configuring FPGAs.
All or part of this analysis software implementing this invention's methods may be made available as a program product on a computer readable medium, such as optical disk 23.
The present invention preferably includes methods of determining the emotional state that a person is experiencing by comparing real-time measured physiological responses to given stimuli with baseline physiological responses that were previously measured after exposure to the same or other neutral stimuli. The physiological responses are preferably measured by embodiments of the physiological monitoring systems and methods previously described. Specific emotional states include, for example, neutrality or indifference, fear, anxiety, excitement, happiness-laughter, sadness-crying, anticipation, boredom, anger-aggression, pleasure, love, tenderness, or calmness. Additionally, the method of the present invention can be used to determine a person's attentiveness or attentive state as an emotional state, i.e., the degree to which a person is engaged with, concentrated on, or focused on a particular stimulus, and thus more susceptible to experiencing an emotional state in response to that stimulus.
A preferred method of determining an emotional state includes exposing a person to a stimulus, measuring the person's physiological response to the stimulus, and comparing the measured physiological response to a known baseline physiological response. A deviation between the measured physiological response and the baseline physiological response can be determined, and if the deviation is within acceptable ranges of deviation from the baseline physiological response, the person is identified as experiencing a particular emotional state that is associated therewith.
Referring to the flowchart of a preferred method of the present invention shown in
While the person is being exposed to the stimuli, the person's physiological responses are monitored in real-time, as shown in step 220. Changes in emotional state can manifest in characteristic changes in many, if not most, organ systems. Responses of different organ system can be measured either in sequence or in parallel. For example, emotion-induced changes can occur in the respiratory system, the cardiac system, the integument (skin), the musculoskeletal system, and so forth. Further, emotion-induced changes can manifest in different ways in a single organ system. For example, the average values of a level, or a rate, or similar, of a physiological parameter or value can change from a baseline value to a perturbed value. Examples of such changes in physiological parameters are changes in heart rate, ECG characteristics (such as ST segment level), galvanic skin response, peripheral temperature, respiratory rate, minute ventilation, tidal volume, inspiratory or expiratory flow rates, inspiratory or expiratory times, % thoracic tidal volume, respiratory duty cycle, CO2 partial pressures, unconscious motions (e.g., eye blinks, body and posture restlessness, and so forth), unconscious vocalizations, and the like. These and other physiological measures are known in the prior art. See, e.g., Wilhelm et al., 1998, Psychophysiology 35:596.
Also, emotions can induce changes in aspects of the temporal patterns of repetitive physiological events (other than simple changes average rates or frequencies). For example, patterns can become less regular with short term accelerations and decelerations lasting for only one to a few events; or the form of each event may be unchanged while the interval between events varies; or events of unusually large or small amplitude may be interspersed with otherwise normal events, and so forth. In particular, altered respiratory patterns can be manifested in tidal volume instability, inspiratory or expiratory flow rate or timing instabilities, inspiratory or expiratory pauses, sigh pattern and/or sigh volume, occurrences of coughs or apneas or hypopneas, and the like. Such respiratory variability appears or increases during many types of anxiety (e.g., fear). Similar instabilities can be induced cardiac measures such as heart rate, stroke volume (measured by pulse amplitude), ECG timings and amplitudes, and the like. Also, interactions of two organ systems can change, e.g., the patterns of respiratory sinus arrhythmia (periodic changes in heat rate during each breath) can be perturbed. Further variability can be manifested in body, core, or skin temperatures; galvanic or other skin-related responses; EEG, EOG, or EMG; and vocal responses, or a combination thereof.
The measured physiological responses may be monitored, collected, and/or otherwise analyzed under a number of analytical methods. For example, the data may be analyzed as raw absolute numbers, or they may be computed using root-mean-square (RMS), standard deviation (SD), and/or complex demodulation (CDM) methods. Changes in the values and rates (such as those discussed first above) can generally be adequately characterized by mean values and statistical measures of expected variation of the mean values (e.g., standard deviations (SD)). Using statistical techniques, the significance of a particular measured value can be determined by comparing it to its expected (or baseline) mean value and statistically characterizing any differences, e.g., in terms of SDs or in terms of the likelihood that the observed deviation is due to chance.
Changes in patterns and instabilities of patterns (such as those discussed second above) can be characterized by additional analysis tools which are most easily explained by example. Consider a baseline series of values (e.g. tidal volumes)—{420, 425, 425, 430}—with a mean of 425 and a SD of about 2; and also consider a measured series of values—{400, 450, 440, 470}—with a mean of 440 and a SD of about 12. Comparing the measured mean of 440 with the baseline mean of 425 and SD of 2, one concludes that the measured rate is different from the baseline rate in a statistically significant manner. But further comparing the measured SD of 12 with the baseline SD of 2, one can also conclude that the variability (regularity) of the measured series is significantly higher (lower) than the baseline series. Sample statistics of standard deviations are known, and in further embodiments, can be used to assess the statistical significance of a difference in SD values. This increase in (e.g., tidal volume) instability can also be analyzed by comparing the baseline series of differences in successive values—{5, 0, 5}—with the measured series of difference in successive values—{50, −10, +30}. SD (and also means) of the difference series can also be used to assess variability and irregularity. In further embodiment, other statistics that can be employed to assess variability include third and fourth order moments of the value or difference series, root mean squares of the difference series, and the like. For example, the RMS value of the measured difference series is about 34, which is considerably greater than the RMS value of baseline difference series of about 4.
Alternatively, signal regularity or predictability can be analyzed by entropy methods, in particular by sample entropy methods, where lower (higher) entropies indicate increased (decreased) predictability or regularity. See, e.g., Richman et al., 2000, Physiological time-series analysis using approximate entropy and sample entropy, Am. J. Physiol. Heart Circ. Physiol. 278: H2039-H2049. Briefly, sample entropy reflects the probability of prior signal patterns reoccurring in the future; the higher the probability, or the lower sample entropy, the more predictable and regular the signal. Sample entropy can be measured as the negative natural logarithm of an estimate of the conditional probability that two or more sub-series (epochs) of length m, which are selected from the input data series beginning at different data points of the input data series and which match within a tolerance r, also match at the next (m+1'st) data point. Other methods of analyzing signal regularity or predictability can be used in other embodiments.
Next, after determining values, measures of instabilities, and optionally their significances, it is preferred to combine some of all of this determined data into a set of physiological data that provides a "physiological fingerprint" of the measurements of the current emotional state of the monitored person. The significance of such fingerprints, also known as feature vectors, can then analyzed as described in the following. Fingerprints measured during examination situations can be compared to significant fingerprints or feature vectors to determine a likely current emotional state of the subject.
Once the individual physiological responses or combined physiological fingerprint are recorded, they are compared to known baseline physiological responses or fingerprints observed when the person was in selected emotional states, as shown in step 230. Preferably, the known baseline physiological responses and their variances are previously recorded, and stored in an electronic database in association with the particular emotion states and the particular setting (e.g., at home, in a theatre, and the like) occurring when they were monitored. The baseline is preferably stored as a limited range of discrete indices or physiological fingerprints.
For example, the method can include measuring a person's baseline respiratory rate in a particular emotional state, and storing such respiratory rate as a known baseline physiological response that includes a range of respiratory rates, i.e., having upper and lower bounds that differ by a percentage of the measured respiratory rate. Preferably, the allowable range is determined based on a normal deviation that can be expected in a healthy population for a particular physiological parameter; more preferably, the allowable range is less than a normal deviation. By storing the known baseline physiological response or fingerprint as a limited range, comparison during later steps of
In the preferred embodiment, one baseline physiological response is measured as a response to an emotional state evoked by a neutral stimulus, preferably over an extended period of time to invoke a stable and preferably resting physiological response by the person. For example, exposing the person to a neutral stimulus can include displaying a pleasant image or video, broadcasting soothing music, and instructing the person to sit or lay still, or a combination thereof. During such exposure, the person's physiological information is monitored, recorded, and stored as the baseline physiological response or fingerprint.
In an alternative embodiment, the known baseline physiological responses in particular emotional states are measured as responses to the same stimulus or series of stimuli that the person is exposed to in step 210. Similar to exposure to a neutral stimulus, the person's physiological information is monitored, recorded, and stored as the baseline physiological response or fingerprint. Using the same stimulus for obtaining the known baseline physiological response or fingerprint as is used in step 210 advantageously facilitates easier determination of an emotional state of the person because the measured and baseline responses can be directly compared to each other. Additionally, the baseline responses or fingerprints obtained in this manner can be correlated to specific emotional states (e.g., by retrospective questionnaire or interview) prior to comparison with the measured responses.
Whichever type of stimulus is used to obtain the known baseline physiological response or fingerprint, the monitored baseline data is preferably measured individually for each person. Preferably, it is previously measured at a time when the person exhibited a stable physiological condition and health to reflect the person's normal physiological parameters. Additionally, the baseline physiological response or fingerprint is preferably recently updated, e.g., preferably measured within the last two years and more preferably measured within the six months, to minimize expected physiological response deviations due to aging.
Alternatively, the known baseline physiological response can be based on a distribution of physiological responses previously measured from a group of a population of similar people. Preferably, it is selected from empirical data based on histograms or other distributions of known physiological responses or fingerprints that were collected during exposure to a stimulus or a series of stimuli. Such data is preferably representative of a large population of persons and can be stratified by different individual characteristics, such as age, height, weight, and gender.
After comparing the measured physiological response or fingerprint to the known baseline physiological response, a deviation between the two data sets can be determined, as shown in step 240. As described above, the known baseline physiological responses or fingerprints are preferably correlated with particular emotional states. In the case where a neutral stimulus is used to obtain a known baseline physiological response, particular emotional states are preferably correlated with changes in the physiological responses or fingerprints from the baseline.
Based on whether the determined deviation falls within an acceptable error or deviation range, the method identifies that the person is experiencing the particular emotional state. For a simple example, if the person's ventilation rate was measured as a physiological response to a stimulus exposure, and the measured ventilation rate falls within the acceptable range for baseline ventilation rates that correspond to the emotion of fear, then the method would identify the person is experiencing fear while the person's ventilation rate remained within that pre-determined, acceptable error range, as shown in step 260. If, however, the person's ventilation rate falls outside the acceptable error range of the baseline physiological response, then the method would identify the person as not experiencing the emotion of fear, as in step 270 (but perhaps another identifiable emotional state).
The signatures of baseline emotional states are recognized by a pattern of related changes in a number of monitored physiological parameters (rarely, only one parameter). There a number of methods known for finding and characterizing such patterns. For example, descriptions of pattern recognition methods and machine learning tools as known in the art can be found in, e.g., Duda, R. et al., Pattern Classification, Wiley, New York, N.Y. (2001), Vapnik, V., Statistical Learning Theory, Wiley, New York, N.Y. (1998), and Hastie, T. et al., The Elements of Statistical Learning, Springer (2001).
Pattern recognition may be broadly defined as developing an algorithm that is able to classify an individual as experiencing one of n labeled classes (e.g., emotional states) in view of monitored physiological responses and parameters. One approach uses a-priori data (already observed stimulus-response data) to train a selected algorithm. Presentation of observed data along with the experienced emotional states to a classification training algorithm teaches the classifier (i.e., generates parameters that define a specific classifier) to recognize the distinctions between each of the classes that are present. In one example, the classifier trainer creates a set of decision boundaries so that when a new data (multidimensional) point is presented to the classifier, the classifier may determine in which boundary it resides and then label it accordingly.
Step 1 preferably includes labeling the relevant classes (e.g., emotional states). For example, this can be simply assigning an integer label for each of the n classes, e.g., cl=1, . . . , n. Step 2 preferably includes extracting relevant features (e.g., parameter boundaries in an n-dimensional space) from the data that will be used to uniquely identify each class. In certain embodiments, sets of features can be manually selected and the remaining steps of
Once adequate performance is achieved, the selected features are can be put together to form a feature vector. The dimension D of this vector (which is the same as the dimension of the feature space) is preferably the number of features used, and each component in the feature vector is preferably a scalar component. Following feature extraction, step 3 preferably scales the data representing the features in an appropriate manner. For example, a linear transform can be performed to ensure that the data lie in the range [0,1] or [−1,1].
The dimension reduction of step 4 preferably includes, in one embodiment, a principal components analysis. This analysis transforms correlated feature variables (if any) into a preferably smaller number of uncorrelated feature variables called principal components. After this analysis, the first principal component accounts for as much of the variability in the data as possible, and each succeeding component then accounts for as much of the remaining variability as possible. As a result, components that account for very little variability in the feature space can be discarded.
The final step 5 includes selection of an appropriate learning algorithm to train the classifier. Preferably, the scaled and reduced feature vectors used for training are presented to the learning algorithm, i.e., for each class, a representative set of training data is labeled as belonging to that class. The algorithm can, for example, fit multi-dimensional decision boundaries between each class. A preferred learning algorithm for emotional state identification is the support vector machine ("SVM"), see e.g. B. Scholkopf et al., Estimating the Support of High-Dimensional Distribution, Neural Computation, 13:7, 1443-1471 (2001) or neural network classifier. Embodiments of this invention also include automatically selecting important features by repeating the steps of
Once a particular classifier system has been trained, new monitored physiological data can be classified, as shown in
Thus, the classification step method at step 6 receives input signals describing a subject and extracts the particular features of importance determined during training. Step 7 scales the extracted features in a manner similar to the scaling performed in step 3. Step 8 combines the scaled features into the important characterizations of reduced dimensionality (e.g., the determined principal components) that have been previously determined during training. Then step 9 applies the previously-trained classifier to the characterizations determined in step 8 in order to find the likely class (e.g., emotional state) for the subject described by the input physiological signals.
In the present invention, the class or emotional state of a subject being monitored is preferably determined from one the emotional states of the subject on which the classification algorithm has been trained, or one of the emotional states that the algorithm is generally trained on based on previously collected data from a distribution of subjects. If a determined emotional state matches, within an allowed deviational range, the class identified by the algorithm based on physiological data obtained from the subject under test, then that subject is confirmed as associated with such class, i.e. the subject is identified as experiencing the particular emotional state. If, however, the determined and the identified classes do not match, or if no likely matching class is found, the subject is not confirmed as associated with such class or emotional state.
A specific application of the above method can be using measured ECG signals to identify for emotional states. In a preferred embodiment, for example, changes in heart rate variability are measured for use as an indication of sympathetic nervous system activity. Extracted features can be combined to form a feature vector that is preferably used as the primary representation or indicator for comparing measured physiological parameters to baseline physiological parameters.
Preferably, the first step in ECG feature extraction is to identify each heart beat, e.g., by identifying the QRS complex. Several standard R-wave detection and QRS detection algorithms are known, such as that disclosed by Kohler et al., The Principles of Software QRS Detection, IEEE Engineering in Medicine and Biology (2002), and any of these would be suitable to detect the QRS complex. In addition, the P-wave and T-waves may also be identified such that a single heartbeat can then be defined from the beginning of the P-wave to the end of the T-wave, as shown in
It is well known that components of cardiac timing are under autonomic system (ANS) control. In a healthy individual, for example, it is the net effect of the parasympathetic (vagus) nerves (decelerate heart rate) and the sympathetic nerves (accelerate heart rate) that dictate the instantaneous heart rate. Furthermore, changes to mental and emotional states may induce changes to these nervous responses, thereby changing the beat to beat timing of the heart. The goal of heart rate variability (HRV) analysis is to work backwards, starting with the beat to beat variability, to obtain a picture of emotional changes. Analysis of the beat to beat variability or HRV advantageously offers a means to evaluate changes in sympathetic and parasympathetic input to the heart. In turn, changes to these inputs, when placed in environmental context, may correlate with changes to emotional state.
HRV analysis may be used to select a set of features that in turn may be used to train a statistical learning machine for emotional classification. The determination of these features is well documented in the literature (see, e.g., Heart rate variability: Standards of measurement, physiological interpretation, and clinical use, Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology, Eur. Heart J., 1996 March, 17(3):354-81; Acharya et al., Heart rate analysis in normal subjects of various age groups, Biomed. Eng. Online, 2004 Jul. 20, 3(1):24; Berntson et al., Heart rate variability: Origins, methods, and interpretive caveats, Psychophysiology, 1997 November, 34(6):623-48), and features are preferably broadly classified into 1) time domain indices; 2) frequency domain indices; and 3) non-linear indices. Preferably, a feature set includes a combination of several of these calculated over an appropriate length time range of interest.
In addition to ANS input, there exists a natural cycle of heart rate variation that occurs through the influence of breathing on the flow of sympathetic and vagus (parasympathetic) impulses to the sinoatrial node. This is called respiratory sinus arrhythmia (RSA). As noted above, the rhythm of the heart is primarily under the control of the vagus nerve, which inhibits heart rate and the force of contraction. When a person inhales, the vagus nerve activity is impeded and heart rate begins to increase. Upon exhalation, this pattern is reversed, i.e., heart rate accelerates during inspiration and decelerates during expiration. This alternating pattern of acceleration and deceleration corresponds to high frequency changes in the HRV and the high frequency power is preferably used as an index of RSA and hence parasympathetic activity or vagal tone.
Individual changes within respiratory parameters of rate and tidal volume (Vt), however, can seriously confound the association of RSA and cardiac vagal tone. Decreased Vt and increased breathing frequency (Fb), or respiration rate, can profoundly attenuate RSA under conditions in which cardiac vagal tone remains constant. Thus, measuring HRV alone may be insufficient and these measurements are preferably adjusted based on the individual's breathing parameters. Adjustment for respiratory parameters has been shown to substantially improve relations between RSA and significantly vagally mediated HR and physical activity. In other words, concurrent monitoring of respiration and physical activity enhances the ability of HRV to accurately predict autonomic control. Typical adjustments preferably include determining the frequency of RSA and excluding this band from any derived frequency domain indices; normalizing indices by Vt or Fb; or by some quantification of the strength of RSA.
The particular learning algorithm used with the present invention can be selected from algorithms known in the art, for example, linear discriminate functions, probability distribution, estimation and clustering, support vector and other kernel machines, neural networks, and/or boosting algorithms. A preferred learning algorithm for identification of emotional states is an SVM, and more preferably a multi-class SVM, which enables discrimination between multiple classes. In other embodiments, for example where only a single class is targeted, the one-class SVM by Scholkopf et al. is preferred because it fits a tight bound to a single class with no information about other classes. Thus, if a new feature vector falls within this bound, it belongs to this class or is associated with this person; otherwise it is rejected as not being of this class or associated with this person.
A further specific application of the above methods can be measuring breath and speech combinations as an identifier for emotional states is described below in more detail. This application includes material already described in patent publication WO 2006/002338A2, published Jan. 5, 2006 and titled "Systems and Methods for Monitoring Cough", which is included herein by reference in its entirety for all purposes.
Preferably, a microphone or other sound recorder creates a provided audio sample represented by associated traces. The following preferred features are then identified and extracted from a provided audio sample: 1) sound envelope, 2) event marker trace, 3) pitch, 4) sound energy, 5) duration, and 6) peak fraction.
The sound envelope ("SE") is the trace of the audio signal that is preferably captured from a throat microphone ("MIC"), and downsampled from 1500 Hz to, e.g., 50 Hz. Every, e.g., 30 data points are preferably normalized and summed to give a low resolution envelope. The event marker trace ("EVT") is a binary trace preferably at the same resolution as the SE trace. It is ON when the SE trace rises above a threshold (e.g., a relative amplitude value of 60) and goes OFF when it drops below another threshold (e.g., 30) for 3 consecutive samples.
Pitch is preferably evaluated using the MeI cepstrum of the raw MIC trace. A cepstrum is the result of taking the Fourier Transform (FT) of the decibel spectrum as if it were a signal. The cepstrum is preferably defined as the FT of the log (with unwrapped phase) of the FT, that is:
cepstrum of signal=FT(log(FT(the signal))+j2πm),
where m is the integer required to properly unwrap the angle of the complex log function.
There is a real cepstrum and a complex cepstrum. The real cepstrum preferably uses the logarithm function defined for real values, while the complex cepstrum uses the complex logarithm function defined for complex values as well. The complex cepstrum holds information about magnitude and phase of the initial spectrum, allowing reconstruction of the signal. The real cepstrum only uses the information of the magnitude of the spectrum.
The cepstrum is a useful feature vector for representing the human voice and musical signals. This technique can advantageously separate the energy resulting from vocal cord vibration from the "distorted" signal formed by the rest of the vocal tract. For such applications, the spectrum is preferably first transformed using the MeI frequency bands. The result is called the MeI Frequency Cepstral Coefficients (MFCC), and can be used for voice identification, pitch detection and other analysis.
Sound energy is the integral of the SE trace over the duration of the EVT event. Duration is the length in milliseconds of the EVT ON period (i.e., sound event). Peak fraction refers to the peak of the SE trace for each event expressed as a fraction of the total EVT duration (e.g., (Peak location−Start)/(End−Start)).
The EVT trace is then preferably used to mark sections of the breath traces, where the following additional features are extracted:
In other embodiments, a combination of sound and breath signatures may be used to identify both speech epochs as well as other non-speech vocalizations, such as cough, laughter, snoring, hic-cough, etc. These identifications may then be used as actual features for an emotional state classification. This results in two nested classification tasks. Speech identification would preferably include, in addition to the above features, other features such as inhalation:exhalation times ratio; the number of turning points on a single exhalation; and the number of neighboring sound events.
Following feature extraction, the data is preferably scaled. Next, it is subject to a dimension reduction process, e.g., principal components analysis, which finds a limited number of significant combinations, i.e., that account for a large part of the data variance. Based on the identified combination of all these extracted features, a reduced-dimension feature vector representative of breath and speech is created and processed to train a classifier.
Another method for identifying emotional states is based on respiratory, facial, and postural responses, as disclosed in the article by Block et al., Specific Respiratory Patterns Distinguished Among Human Basic Emotions, International Journal of Psychophysiology, 1, pp. 141-154 (1991).
The following examples are presented for the purposes of illustration and are not to be regarded as limiting the scope of the invention or the manner in which it can be practiced.
For example, period 930 indicates the time when the subject was sitting backstage awaiting her entrance. Her accelerometer reading is minimal, and her heart rate was steady and stable at about 58 beats/min over this period. This data can be used as a baseline physiological response or fingerprint during exposure to a neutral stimulus when the subject is calm and at ease.
As her onstage entrance time approaches, her ventilation rate, tidal volume, and heart rate all begin to increase as she experiences increased anxiety. The sharp spike in ventilation rate corresponds to the time she was supposed to enter on stage. As can be seen in periods 920 and 930, the subject experiences increased and unstable tidal volume, and her heart rate jumps up to about 122 beats/min as she realizes that she missed her entrance. Corresponding emotions include high anxiety, stress, and fear.
Her heart rate drops slightly and stabilizes as she waits backstage before she decides to finally make her late entrance at period 950, which is associated with a sharp increase to peak heart rate of about 147 beats/min and peak ventilation of about 48 L/min, as shown in period 910. Once on stage, the subject settles into her role, which corresponds to period 960 that shows a slow recovery and stabilization of heart rate.
From the monitored data, it is evident that the subject's physiological responses to varying stimuli create discrete periods. These periods are then extracted and associated/compared with known physiological responses according to the present invention to identify emotional states that the subject is experiencing.
The term "about," as used herein, should generally be understood to refer to both the corresponding number and a range of numbers. Moreover, all numerical ranges herein should be understood to include each whole integer within the range.
While illustrative embodiments of the invention are disclosed herein, it will be appreciated that numerous modifications and other embodiments can be devised by those of ordinary skill in the art. Features of the embodiments described herein can be combined, separated, interchanged, and/or rearranged to generate other embodiments. Therefore, it will be understood that the appended claims are intended to cover all such modifications and embodiments that come within the scope of the present invention.
A number of patents, patent applications, and references are cited herein, the entire disclosures of which are incorporated herein, in their entirety, by reference for all purposes. Further, none of these references, regardless of how characterized above, is admitted as prior to the invention of the subject matter claimed herein.
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|U.S. Classification
|International Classification
|Cooperative Classification
|European Classification
|Jun 12, 2008
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I had breast cancer (early stage 2) in 2008,I did the Lympectomy and I had Lymphedema in my Left arm,I took the chemo and Radiation and I am in tamoxifen now ,so can I do LPG safely?
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What's one way to showcase culture on television? For producers of "How I Met Your Mother" and "Saturday Night Live," the answer was yellowface. In a January episode of HIMYM, the show paid "homage" to the genre of kung fu by outfitting white actors with yellowface make up, "Asian" costumes, and a Fu Manchu mustache. Not to mention wind chime music playing throughout the episode. In SNL's rendition, actor Taran Killam narrated a mid-air kung fu battle between Melissa McCarthy and Bobby Moynihan with an "eastern" accent, squinty eyed expressions, and a Nehru jacket, all while a gong goes off in the background.
While some viewers may have found these skits funny, they serve as a reminder that the stereotypical portrayal of Asians is regrettably still around.
The History of Yellowface in Hollywood
In a way, yellowface seems like a fitting approach to portraying Asians on both shows. After all, neither HIMYM or SNL have Asian actors cast as season regulars.
Therein lies the problem.
Yellowface's history in Hollywood is longstanding and its ramifications persist even today. If you're scratching your head and asking, "what exactly is yellowface?", it goes far beyond expressing an Asian aesthetic through costumes, makeup, music, set pieces and accents. As stated in Racebending, "yellowface, at its core, is not only the practice of applying prostheses or paint to simulate a crude idea of what 'Asians' look like; it is non-Asian bodies (usually white) controlling what it means to be Asian on screen and stage, particularly in lead/major roles." Sounds very similar to what HIMYM and SNL actors did, doesn't it?
While the term "yellowface" first surfaced in the 1950s at the advent of anti-Asian sentiment during World War II, the use of white actors to portray Asian people started in the early twentieth century. Leading roles for Asian characters went to white actors because viewers did not want to watch "real Asians," and white actors were obviously more readily available. In many of these productions, Asians were portrayed as "villians," or the "model minority," and viewed as "perpetual foreigners" in the United States. There was also sentiment that Asians could not portray complex or compelling characters, so many "genuine" Asian actors were often cast in menial roles such as laundrymen, servants, and prostitutes. As the century progressed, though anti-Asian fervor and immigration laws waned and relaxed, the effects of a century yellowface and the stereotypes it produced remain.
#HowIMetYourRacism and #SaturdayNightLies
Soon after both episodes aired, viewers shared their thoughts of the performances online. The dismay was so great that Twitter hashtags #HowIMetYourRacism and #SaturdayNightLies were created in reaction, with tweets still streaming in the weeks after the shows aired. At the core of these conversations are criticisms surrounding diversity in the media and cultural appropriation, and questions as to why major networks still permit yellowface to happen. Additionally, a protest of SNL's yellowface skit was scheduled February 15 at NBC's New York studio, but has since been delayed due to Olympic coverage during SNL's time slot.
While NBC has not issued any response to the skit, HIMYM creator Carter Bays took to Twitter to apologize for offending any viewers.
Click below to see photos and videos from both yellowface skits:
Will Yellowface Ever Go Away?
Not everyone was "up in arms" about the yellowface skits. Many tweets state how "ridiculous" the criticism is and that the content wasn't that offensive. If producers and actors of popular shows are fine with performing this material, what could be the harm? The answer is not that simple. Even if the shows were meant to be funny and not in the least harmful, it is a direction shows should avoid going in altogether.
To be fair, not everyone knows about the history of yellowface, and HIMYM and SNL's comedic sentiments were, in fact, funny to some. In any case, yellowface perpetuates inaccurate stereotypes about one group as portrayed by another. On a side note, while gains have been made for ethnic groups in the media, namely, with shows like The Mindy Project and Elementary casting Asians as lead characters, yellowface also reflects the lack of diversity in Hollywood.
Arguably, the most important takeaway from these incidents is this: whether or not they intended to, HIMYM and SNL have reminded us of the fact that this cultural sensitivity is not achieved overnight, and stereotypes takes a very long time to truly diminish. Moving forward, we can hope that yellowface does not ever happen again. Or, in the very least, hope that television networks, producers, actors, and viewers understand why yellowface is not so funny after all.
Read more: asian american, cultural appropriation, diversity, how i met your mother, media, racism, saturday night live, yellow face
Photo Credit: NBC
ty. great comments
I second Christine K's comments. SNL was not making fun of a race of people, it's was making fun of media stereotypes which are already fairly silly. For pity's sake, don't ever go to an anime convention, or your head will explode.
BTW, I've seen enough Asian portrayals of Americans and Europeans while travelling overseas to know that they can be pretty heavy-handed and derogatory with their portrayals, too. And then there's the ganguro subculture- go ahead, do am image search!
I should have clarified which "Rice, Rice Baby" I was talking about. I didn't know Weird Al had one, or that there were so many on Youtube. The one I meant is by slantyeyedmama which is a music group consisting of comedian Kate Rigg and violinist Lyris Hung. They sing about the stereotypes they face.
I have never watch SNL, when I have seen parts it is because of ads or news about something stupid they have done; nor have I ever watch HIMYM. I find both shows rude, crude and not funny at all. Would like to see them both removed from the air and something more intelligent in their place.
stop with the over sensitive I am offended by everything bs. .......seriously
stop with the over sensitive I am offended by everything bs. seriously
It's a 'parody' of their culture...
SNL has been doing comedy about everything and everyone, since it started in the 70s....
Lighten up, and enjoy the show, or if it's too much for you, change the channel.....
Unlike some people commenting, I DID see both questionable shows. They're making fun of the media we get from Asia, not Asians themselves.
HIMYM was making fun of kung-fu flicks, and the SNL skit was making fun of kung-fu flicks and Iron Chef's over-the-top host. These things have been part of OUR media culture, too, for the last 40 years (Iron Chef for less, obviously, but still for at least a decade by now), and the skit and episode were made by people who grew up watching them, and still watch them when new ones come out, because they love them. Kung fu flicks and Iron Chef's host are outrageous to the point of silliness at times. We should be able to make fun of THAT at least.
I detest the show How I Met Your Mother and now I know why? When do we learn to all accept each other merely for who we are-HUMANS? Sometimes I wish color didn't exist and that would help solve a lot of racial issues! My parents taught me WE ALL HAVE RED BLOOD, skin is only the outer shell! LOVE MAKES A PERSON'S SKIN COLOR IRRELEVANT.
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Pendant Lighting & Pendant Light kits
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From boycotts to strikes, activism drives social, political and environmental change around the world.
About StumbleDNA StumbleDNA
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Independent and edgy, get a different spin from alternative news that's far from mainstream.
From Disney to Flash, the art of animation has brought our favorite cartoons to the screen.
Flex your creativity by exploring performing arts, literature, music, visual arts and more.
You could spend a lifetime exploring Asia, from beaches in Thailand to bustling cities in Japan and China.
Learn about atheism and agnosticism, and how they relate to religious and spiritual belief systems.
Sometimes the best stories come from real life. Explore top biographies of famous people throughout history.
Think ordinary is boring? Explore the weird, the strange, the obscure, and the downright freaky.
Are you a bookworm? Do you dream of a Pulitzer? Explore the literature of your favorite authors.
Learn about brain disorders and the symptoms of neurological, psychological and nervous system diseases.
Is it all about supply and demand? Learn about capitalism, competitive markets, wage labor and more.
Miss Saturday morning cartoons? Get your dose of cartoons - funny, political and more - here.
With order comes disorder. Learn about chaos theory, controlled chaos and the butterfly effect.
From Curious George to The Lorax to Goodnight Moon, find the best children's books to read with kids.
What's on your mind? Learn about cognitive science and development, psychology, neuroscience and more.
Learn about the history of the Cold War and related conflicts like the Vietnam War and the Korean War.
Whether you like romantic comedies or black comedies, have a laugh by Stumbling through funny films.
Bourgeoisie, proletariat and social revolutions: explore communist theories and movements throughout history.
Seen Elvis lately? Explore conspiracy theories about everything from the government to UFOs.
From Bohemians to Beats to Hippies, learn about counterculture movements around the world.


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BuyDig offers the Samsonite 5-Piece Travel Luggage Set in Navy, model no. 17386-1596, Black, model no. 17386-1041, or Red, model no. 17386-1726, for $119.99. Coupon code "FALL30" cuts it to $83.99. With free shipping, that's $5 under our mention from last week and the lowest total price we could find by $26. It features 1,200 denier polyester fabric and includes a 26" wheeled upright, 22" wheeled upright, duffel bag, tote, and travel kit.
Also available is the Samsonite 4-Piece Lightweight Luggage Set in Navy, model no. 51214-1596, Black, model no. 51214-1041, or Red, model no. 51214-1726, for $192.85 before the above coupon, $135 after. With free shipping, that's $485 off list, $5 under our December mention and the lowest total price we've seen in over a year. It includes a duffel bag, boarding tote, 20" spinner, and 28" spinner.


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Sightseeing Tickets & Passes See all
Only Show: Attraction Tickets | Museum Tickets & Passes | Nightclub Passes | Sightseeing & City Passes | Sightseeing Packages | Zoo Tickets & Passes
Barcelona Card with Guidebook
See and do everything Barcelona has to offer with this great value city sightseeing and discount card. Choose from 3, 4 or 5 consecutive day passes and receive ... Read more
Barcelona, Spain
Duration: Varies
Madrid Card
Discover the rich history and culture of Madrid with your Madrid Card. Gain entry to over 50 museums, partake in a "Discover Madrid" walking tour or ... Read more
Madrid, Spain
Duration: Varies
Independent Toledo Day Trip: Toledo Card and High-Speed Train Transport from Madrid
Travel from Madrid to Toledo by high-speed train, and then spend a day exploring independently with a Toledo Card. The must-have sightseeing pass includes a ... Read more
Madrid, Spain
Duration: Varies
Valencia Hop-On Hop-Off Tour with Optional Oceanographic Aquarium Ticket
Explore vibrant Valencia with a 24-hour ticket aboard a hop-on hop-off bus tour. As you travel around the city in an open-top, double-decker bus, create your ... Read more
Valencia, Spain
Duration: Flexible
Madrid Tourist Travel Pass
Travel throughout the region of Madrid with ease with your Madrid Tourist Travel Pass. With this Madrid pass you are entitled to use all public transport ... Read more
Madrid, Spain
Duration: 24 hours
Seville Card
Seville is one of the most popular cities to visit in Spain. Although it is acclaimed for its monumental heritage, it is also a very important cultural center. ... Read more
Seville, Spain
Duration: Varies
Barcelona Discount Card
Explore Barcelona at your own pace and see the sights and attractions you want with a Barcelona discount card, valid for two days. Gain discounted access to ... Read more
Barcelona, Spain
Duration: 2 days (approx.)
Barcelona Night Card: Nightlife and Club Pass
Party from dusk 'til dawn with the Barcelona Night Card, a city pass designed for night owls! Valid for seven consecutive days, the nightlife card offers free ... Read more
Barcelona, Spain
Duration: 7 days (approx.)
Bilbao Bizkaia Card and Sightseeing Pass
See Bilbao and beyond with a Bilbao Bizkaia Card and Sightseeing Pass. Choose between a 24-, 48- or 72-hour pass and gain cash-free entry to top Bilbao and ... Read more
Bilbao, Spain
Duration: Flexible
Palma de Mallorca City Card and Sightseeing Pass
Discover the best of Palma's historical, cultural and gastronomic highlights with a Palma de Mallorca city card and sightseeing pass. Choose from a 48-hour, ... Read more
Mallorca, Spain
Duration: Flexible
Málaga City Pass: Experience Card or VIP Experience Card
Discover Málaga with a sightseeing pass that lets you explore the famous Costa del Sol city at your own pace. Choose from two options, depending on the ... Read more
Malaga, Spain
Duration: 1 day (approx.)
Zaragoza Card and Sightseeing Pass
Discover the historical and culinary highlights of Zaragoza (Saragossa) with the Zaragoza Card. Choose from a 24-, 48- or 72-hour card to gain access to top ... Read more
Zaragoza, Spain
Duration: Flexible
Valencia Tourist Card
Sightsee at leisure with the Valencia Card, and enjoy discounts of up to 50% on top city attractions. As Spain's third largest city, Valencia boasts a wealth ... Read more
Valencia, Spain
Duration: Varies
Salamanca Card and Sightseeing Pass
Explore Salamanca and sightsee at your leisure with the Salamanca Card, enjoying the city's museums, monuments, shops, restaurants and hotels. Choose from a ... Read more
Salamanca, Spain
Duration: Varies
Granada Combo: Albaicin and Sacromonte Walking Tour and Hop-On Hop-Off Train
Get a snapshot of old-world Spain on this 2-hour walking tour of Albaicin and Sacromonte. With an expert guide, delve into Granada's Moorish roots at the ... Read more
Granada, Spain
Duration: 2 hours (approx.)
Only Show: Attraction Tickets | Museum Tickets & Passes | Nightclub Passes | Sightseeing & City Passes | Sightseeing Packages | Zoo Tickets & Passes


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Watch Friday Night Lights Season 4 Episode 3 online via TV Fanatic with over 4 options to watch the Friday Night Lights S4E3 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, and Google Play.
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This is the third episode of the third season. It's titled "In the Skin of a Lion."
- Show:
- Friday Night Lights
- Season:
- Friday Night Lights Season 4
- Episode Number:
- 3


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I think she thinks that she has a mess on her hands because I keep offering to clear the rocks, but she can't say yes it's OK because she says I have no remorse for doing the work on the Tea Cup trail, so I can't be allowed to do any volunteer maintenance because the people who hate me doing maintenance would not send her Hot Chocolate or Egg Nog recipes anymore. Who knows what she thinks? Maybe Ride'n'Shine knows what she thinks, he probably meets with her regularly and knows how she thinks.
What say you Ride'n'Shine?
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There are currently 262 users online. 135 members and 127 guests
Most users ever online was 947, 12-07-2013 at 00:35.
Thanks Hawk I.Do you have the "max" or the trimmed down oval model?Five Tango Today, 07:21
Please let me know how this works. I'm attending a Camporee on the 16-18th and have the same issue. My plan was to just sleep away from the troop (notJPFREEK Today, 07:20
Is the address just Cream Hill Road, Alexandria, NH or is there a number? I plan to use my GPS and it usually asks for a house number. Will there beallhansondeck Today, 07:16
That's awesome..... If I may ask, where did you get that tent???Camping Nut Today, 07:14
That looks great. Good clean finish look. With the wider Grosgrain you takeout all the slop.Dutch Today, 07:12
Some beautiful country, thank for sharing.
Sorry I do not have a tent but you may want to look at using a tarp that will fit 2 and it will be lighterCanoefor2 Today, 07:05
Black - Argon 67 (10 denier)
Black - Argon 90 (15 denier +0.9 oz)
Hunter Green - Argon 67 (10 denier)
Woodland Camo - Argon


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Chistes de Yayo by Gabriel Ramos Correa Botonera que consiste en una selección de excelentes chistes de yayo. Ideal para reirse a carcajadas y compartir un buen … 100,000+ downloads, Rating 4.19 (1137) Free
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Philips Friends of Hue LightStrips review
£80 (for 1.8m)
Easy to se tup, easy to manage, easy to install, easy to cut down to size - it's just easy and looks great once in place
Cable may get in the way, need nearby power socket, once cut that's it - no going back, 2m kit only measures 1.8m, pricey
Philips Hue, the intelligent lighting system that you can control - in both colour and brightness terms - via your smartphone, has gained a new accessory in the guise of Philips LightStrips. Light up your life with these bendable strips of LED lights that you can place around the home for dramatic mood lighting.
If you're already on board with the Philips Hue system - which we use every day, and think is fantastic despite the initial £180 price - does the addition of LightStrips make sense, or is it more Christmas lights than mood lights?
Colour Me Beautiful
The concept of LightStrips is simple: it's there to add flexibility - literally - to your Philips Hue lighting set-up. If you don't already own Philips Hue then LightStrips are as good as useless, even if the box happens to be pretty. But Hue fans can get creative: pop LightStrips under the sofa, beneath the breakfast bar, wrap them around an arty sculpture, or wherever you see fit.
READ: Philips Hue review
Available in white or as one of 16 primary colours, whichever LightStrips you select they're all capable of displaying one of 16-million colours. Yup, sixteen million options right at your fingertips.
How long is a piece of string?
The "Friends of Hue LightStrips" that we received for review - available via the Apple store - combine 60 LED lights over a 1cm-wide stretch of plastic that's an alleged two metres in length. Thing is the strip itself is 1.8m, not the 2m it claims. There are also 1.6m and 1m versions available direct from Philips, albeit ones that appear to lack the "Friends of Hue" preface on the box - we do hope that they're more amenable when it comes to length accuracy.
The LightStrips has 3M adhesive tape applied to the back to help you stick it into place, which works well given the light weight of the design. Every three LED lights along - that's 10cm for those more calculating designers - there is a "cut point" so you can chop the strip down to the right length if it's too long for your desired location. But cut it and, unlike a worm where both (unfortunate) sides keep on going, you'll be stuck with a redundant plastic strip on the non-wired side. Consider that before buying the longest version - the 1m kit may well suffice.
Other than that length-based glitch the only real installation issue you may find is that you'll want a plug socket nearby to power the LightStrips. Philips has included a three metre power cable - which can't be cut down to size - but that may look unsightly if you don't consider how to position the cable within the home.
Light recipes
One plugged in you'll want to set up the LightStrips using your Apple or Android smartphone app. The only real faff you'll have here is adding the lights to your current lighting recipes within the app, as the LightStrips aren't automatically added even though the light is plugged into the wall.
Furthermore we weren't able to add them to mirror the standard "Relax" or "Concentration" settings available in the app, but you can still get them to turn on with an accentuating colour instead - a lot more chic we think.
Brightness, too, doesn't match up to a more standard bulb. Like we say, this is mood lighting and the 120 lumen output is designed for dimmer conditions; that subtle push of colour isn't supposed to illuminate a whole room, it's just to complement the Hue system as a whole.
We use Philips Hue every day and we love it. The addition of LightStrips we've got heaps of praise for - it's easy to set up and taps into the Hue system with relative ease too. It's all just easy - and looks great.
Despite the confusion of the strip's length - a box marked with 2m length ought to deliver more than the 1.8m in the box - once set up we found the LightStrips to complement the Hue system wonderfully. Just don't buy them without investing in Hue first - if you're new to it then be prepared to bite the cash bullet as Hue is £180, and that's before the addition of LightStrips or extra bulbs.
But it's worth it. Even if LightStrips won't illuminate a whole room with ultra-brightness - that's not what they're designed to do - we found that they were spot on to set the mood wherever installed. It's five-star hotel kind of stuff. LightStrips have certainly lit up our life - and we love Hue all the more for it.
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This blog will serve as a witness to my continued journey towards overall wellness. Food, proper nutrition, exercise, calories and emotional eating are just a few of the things that I'll be sharing.
June 9, 2010 was the 2nd Anniversary of my gastric bypass. For the better part of those two years my weight has steadily declined, plateaued, gone up, declined and then held steady. But for the last 12 months I have also battled constant pain – first the strep throat that couldn't be killed until my tonsils were removed (about 6 weeks in bed); a lump on the right side of my neck that the docs attribute to my tonsils (wrong); fatigue and depression (meds and therapy); ruptured disc degeneration resulting in an Anterior Cervical Discectomy with Fusion (6 more weeks in bed); unresolved pain (read "surgical failure" here); a spinal tap, spinal headache (thought I was going to die) and blood patch – still it continues. My doctor says I'm a medical mystery. hmmmmm.
Beyond physical pain, I have suffered the emotional pain of losing my beloved uncle to lung cancer, witnessing my mother's emotional decline into a place where no one can follow and most recently the extremely painful loss of my beloved dog, Sam. Sam's death was unexpected and quick. Two days before his second birthday he suddenly became lethargic, we called the vet and as my husband gathered Sam in his arms – he took his last breathe and died. I know lots of people don't understand the loss of a pet, especially when it is followed by extreme grief – but I have been devastated by the loss of Sam.
During all of this pain my abusive relationship with food and myself slowly found it's way back into my life. And that is why I am writing – my "Raison d'etra" is Walking the path so others don't have to and that is accomplished by writing and talking about my journey. By the way, if you don't know "raison d'etra" is French for "reason for being" – in English it has been given the extended meaning of "intense and emotional single-minded purpose for existence" – (even my reason for being has been Super Sized).
Now it's time to begin – I hope you will join me every day, or at least once in a while. Ask questions, share your stories, find comfort in knowing that you are not alone!
Namaste' ~ Deb


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In mybook®: Community
Foster City Police Dept
1030 E Hillsdale Blvd, Foster City, CA 94404
Galleryn of 1
Regular Hours
is offered Thursday and Sunday evenings, 7-10pm, as well as Tuesdays and Fridays, 11-2pm, for all ages. This program is held at the Foster City Recreation Center and costs $3 per person.
General Info
Foster City Police Department offers a range of crime protection services. It conducts the Reserve Officer Program that provides opportunities for citizens to volunteer in community protection. The department s Gang Resistance Education And Training (G.R.E.A.T.) Program is designed to help children to resist pressures and resolve conflicts without violence. It also runs a neighborhood watch program. The Foster City Police Department provides referrals to the Peninsula Conflict Resolution Center, which is a provider of mediation services in San Mateo County of California. The department s additional services include vacation house checks and abandoned vehicle search. Foster City Police Department operates through administrative division and crime prevention bureau.
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Rehabilitation Dept
1065 E Hillsdale Blvd # 403, Foster City, CA State Government, Government Offices
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610 Foster City Blvd, Foster City, CA City Halls, City, Village & Township Government, Government Offices
Maintenance Station
380 Foster City Blvd, Foster City, CA State Government, Government Offices
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petsupplies.com > Pet Supplies Brands > Blue Buffalo Pet Food > Item # 495930
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- Posts: 1
Thanks a lot for updating this great addon.
I like to use it to track buff / CDs / etc, but I noticed that I can't find the proc of the Rune of the Fallen Crusader in the list. Will it be added in the future.. ? I imagine that this will be the case for the 2PT15.
Again, thank you very much for the update.