Deep brain stimulation of subthalamic nucleus helps in improving late phase motor planning in Parkinson ’s disease

Bereitschaftspotentials (BP) are negative cortical evoked potentials that begin 1000 –1500 milliseconds (ms) prior to the onset of a self-paced movement [1]; they represent the cortical activity before the actual onset of the movement. Recording scalp BP has helped to study motor planning in health as well as in disease [2,3]. Two major components of BP can be distinguished associ ated with voluntary movement viz early and late BP. The early component is bilaterally symmetrical across the scalp with maximal amplitude recorded at the vertex and with a principal source in the bilateral supplementary motor area [4,5].
Source: Clinical Neurology and Neurosurgery - Category: Neurosurgery Authors: Source Type: research