Figure 8.

Functional iEEG co-activation in epileptic patients (67 electrodes) in gamma (31–60 Hz). Electrodes are shown on healthy participants' fMRI activation maps of the direct contrast between internally and externally generated action planning (n = 15, P < 0.015, random effect, uncorrected). The marked electrodes in the DMPFC and LPFC (purple and blue, respectively) show significantly increased inter-regional gamma co-activation for internally compared to externally guided simple finger tapping. The color of each electrode indicates the number of significant connections it has with electrodes from the other set.