Figure 1
STN infarction adsacent to the DBS lead.
Subthalamic nucleus infarction (red arrow) is seen adjacent to the previously placed deep brain stimulator.
Figure 2
Intraoperative physiological recordings.
The representative microrecording in globus pallidus internus (A) and histogram of inter-spike interval (B). (C) Spectral analysis of local field potential during stimulation. Spectrogram showing the occurrence of the stimulation artifact (107 Hz) from the previous ipsilateral deep brain stimulation implant in the subthalamic nucleus and oscillatory activity in the time vicinity of the stimulation. Quantification of theta (4–8 Hz) and beta (12–25 Hz) band oscillatory power revealed an increase in theta band activity.