Figure 1.

Deep brain stimulation (DBS) local evoked potentials (DLEPs) recorded in STN in response to STN DBS. A) Average short-latency (8 ms) DLEPs during the first 10 s of stimulation of STN DBS at different frequencies. Arrow indicates the short latency positive going phase that was most pronounced with 130 Hz stimulation. B) Average long-latency (25 ms) DLEPs during the first 10 s of STN DBS. The DLEPs often, but not always, contained multiple cycles of high frequency oscillations (see Supplemental Figure 2). C) Evoked potentials in the STN ipsilateral (blue) and contralateral (orange, 10 times gain) to stimulation from Participant 10. There was no response observed in the STN contralateral to stimulation (see Supplemental Figure 3). Data from panels A and B are from Participant 4.