Fig 1. Time-course of mean alpha (8–12 Hz) amplitude for NFB and SHAM groups at feedback electrode Pz.
The session began with a 3-min resting baseline, followed by 30-min of feedback (periods 1–10) from midline parietal cortex (Pz). Periods significantly different from baseline are indicated with an asterisk (P<0.05). Shaded areas represent SEM.