Figure 12.

Broadband gamma versus gamma oscillation. A, B, Example of broadband gamma increase during movement when Patient 2 was not dyskinetic (A) and when he was dyskinetic (B). Note that in B, the gamma oscillation is also apparent, and distinguishable from the broadband increase. Plots are derived from 20 trials of the iPad reaching task (analysis contains 2 s of movement, 2 s of rest for each trial). In A, the patient was off medications, and in B they were on medications. In both examples they were off DBS. The PSD scale is 10 * log₁₀(μV²/Hz).