THE TRIGEMINAL EVOKED-POTENTIAL .1. LONG-LATENCY RESPONSES IN AWAKE OR ANESTHETIZED SUBJECTS

TRIGEMINAL EVOKED POTENTIALS have been elicited with differing methodo logies that render responses almost as numerous as the number of labor atories reporting them. Forty-six trigeminal nerves were studied to in vestigate trigeminal evoked potentials in 20 awake, normal subjects an d 20 patients undergoing surgery with general anesthesia. A comparison was made between different methods of surface stimulation and subderm al stimulation. It was concluded that these techniques had no practica l use in intraoperative monitoring.