Rapid Identification of Motor Cortex

Electrocorticographic (ECoG) signals are recorded from 128 locations over frontal, temporal, and motor cortices, using BCI2000 software. The subject is instructed to move the left thumb, to imagine the same action, or to rest in response to visual cues. The BCI2000 SIGFRIED module determines activity change in mu/beta frequency bands and translates that change into the diameter of a circle at each electrode location. Areas corresponding to thumb movement are rapidly identified.

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