Abstract for EMBS 96 Paper

INTRACRANIAL DETECTION OF MOVEMENT-RELATED POTENTIALS FOR OPERATION OF A DIRECT BRAIN INTERFACE

Simon P. Levine, Ph.D., Jane E. Huggins, M.S., Spencer L. BeMent, Ph.D., Lori A. Schuh, M.D., Ramesh K. Kushwaha, Ph.D., Donald A. Ross, M.D., Mitchell M. Rohde, M.S.

A direct brain interface for control of assistive technologies is being developed based on intracranial detection of movement-related potentials. Subjects for this research are patients who have electrodes implanted for monitoring purposes prior to epilepsy surgery. Triggered averaging is used to create event-related potential (ERP) templates related to specific movements. These templates are then cross-correlated with the electrocorticogram (ECoG) to identify individual ERPs. Results from 7 subjects with varying electrode placements have yielded detection accuracies as high as 92%, 100%, and 89% with false-positive identifications of 2%, 4%, and 2% respectively.