Abstract
Event-related desynchronization (ERD) and recovery of EEG β rhythms (15–26 Hz) were studied during slow and brisk self-paced index finger extension and flexion. β rhythms started to recover earlier in brisk movements. Brisk movements showed no correlation between duration of EMG burst in the extensor muscle and the latency of recovery whereas slow movements did. In contrast to β-ERD which was widespread, the recovery and rebound of β rhythms occurred in a circumscribed focus close to the hand MI area.
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