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Force sensors for the quantitative assessment of parkinsonian rigidity

Rigidity is one of the primary motor symptoms of Parkinson's disease. In order to quantitatively assess parkinsonian rigidity, an examiner repeatedly extends and flexes the patient's joint and the applied force on the both side need to be recorded with a force sensor-based wearable device. However, choosing of the force sensors is the key factor for a wearable rigidity assessment system. In this study, a series of force sensors for rigidity quantification are introduced; and the implementation of a prototype based on several force sensitive resistors (FSRs) is presented. This study is helpful for those who want to realize parkinsonian rigidity quantification or invent the devices to help the disabled people.