There was bipolar electroencephalographic activity over the occipital, temporal and frontal lobes. In one case of intermetamorphosis, Joseph reported electroencephalographic abnormalities with right temporo-parietal predominance. In studying over 20 patients with misidentification syndromes, Christodoulou found electroencephalographic abnormalities in over 90%. She had no history of epilepsy, and her electroencephalographic results were normal. Persinger concluded that there was "significant congruence" between the stimuli and Swann's electroencephalographic activity. Fink M. Electroencephalographic and behavioral effects of Tofranil. Pelleas Anthor was originally introduced as a researcher in electroencephalographic analysis. There are distinct electroencephalographic and other characteristics seen in each stage. In 1941 one of the first electroencephalographic laboratories in France was installed. This technique is used widely with electroencephalographic research regarding vision and attention. Electroencephalographic (EEG) Applications, VII. Electroencephalographic examination detects the absence of alpha waves, signifying impaired consciousness.