Excessive synchronisation of basal ganglia activity at frequencies < 30 Hz is a hallmark of the parkinsonian state, and may contribute to bradykinesia. Accordingly, we electrically stimulated chronically implanted subthalamic macroelectrodes in 10 Parkinson's disease patients, after overnight withdrawal of anti-parkinsonian medication. We compared the effects of stimulation at 0, 5, 10, 15, 20, 25, 30, and ca. 130 Hz by measuring kinesia time (KT) in a tapping task. Although the effects of...Expand abstract
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Frequency dependent effects of subthalamic nucleus stimulation in Parkinson's disease.
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