RECORDING OF AUDITORY EVOKED POTENTIALS IN MAN USING CHRONIC SUBDURAL ELECTRODES

• DOI: 10.1093/brain/107.1.115
• Publication Date: 2007-01-04T09:37:03Z
• Authors: Y. S. LEE; H. LUEDERS; D. S. DINNER; R.P. LESSER; J. HAHN; G. KLEM
• Keywords: Evoked potential; Stimulus (psychology); Local field potential

With the aid of chronic subdural electrodes we have been able to record from posterior banks sylvian fissure, auditory evoked potentials (AEPs) that had morphologies and peak latencies compatible with primary AEPs described by Celesia Puletti (1969). These amplitudes were not only affected side stimulus presentation but maximal in an area close cortex. The also displayed extremely steep spatial gradient altered pentobarbitone sodium nitrous oxide anaesthesia. Together, these properties suggest subdurally recorded are near-field focal nature allows them be used as effective electrophysiological tools for localization cortex patients.