Patent ID: 7551951

Claim:
An electrode with three-dimensional capabilities for detection and control of brain state changes of a subject, comprising: (a) a body mechanism including: (1) a disk portion having an upper surface and a lower surface, and (2) a hollow shaft portion secured to and extending perpendicularly outwardly from the lower surface of the disk portion; the shaft portion having an inner surface and an outer surface; (b) at least one electrode device pivotally mounted on the inside surface of the hollow shaft portion and having a distal end structured to operatively provide recording or stimulating contact with the brain of a subject; (c) at least one conductor structured to operatively and separately connect the distal end of each at least one electrode device in communication with external apparatus; and (d) at least one activating mechanism structured to operatively and selectively cause a respective at least one electrode device to insert and retract the corresponding distal end into and from brain tissue of the subject spaced adjacent thereto.