Patent ID: 8190251

Claim:
A system for treating a neurological movement disorder, the system comprising: an implantable medical device comprising a housing for a power supply, memory, and electronic circuitry; and at least one electrode in communication with the device and adapted to acquire a physiological signal from a brain of a patient, the device being adapted to: acquire the physiological signal from the brain of the patient; measure a first value from the physiological signal, the first value representative of an amount of oscillatory activity in a first frequency range; measure a second value from the physiological signal, the second value representative of an amount of oscillatory activity in a second frequency range; calculate a biomarker from the first and second values; and use the biomarker to assess the movement disorder, the biomarker being based on a comparison of the first and second values, and the first and second frequency ranges comprising beta and gamma frequency ranges, respectively.