Modalities

Invasive recording of brain activity from the cortical surface.

A graphic record of the variation with time of voltages taken from electrodes on the scalp, whose positions are specified according to a standard system.

A graphic record of the variation with time of voltages produced by the electrical activity of muscle fibers, recorded via electrodes placed on the skin or inserted into the muscle.

Technique for recording electrical activity in peripheral nerves, complementing central modalities.

Minimally invasive neural implants introduced via blood vessels to interface with the brain without open surgery.