Figure 4.

Spatial distribution of tic-related activity in the globus pallidus. A, B, Distance from the dorsolateral border of each nucleus along the electrode trajectory of GPe (A) and GPi (B) neurons recorded from different anterior–posterior levels during the expression of motor tics. Black and white circles indicate neurons with and without significant tic-related activity modulation, respectively. C, Mean distance from GPe/GPi dorsolateral border of tic-related (black bar) compared with unrelated (white bars) GPe and GPi neurons, respectively. Error bars represent SEM.