Early and Late Averaged Electroencephalic Responses at Low Sensation Levels

Abstract
Early and late averaged electroencephalic responses (AER) were elicited from eight listeners under comparable conditions. The AERs were compared with respect to their (1) absolute amplitudes (Na-Pa and N1-P2) and the variability of amplitudes and (2) absolute latencies (Na and N1) and the variability of latencies. Although the early AER amplitude is small, it's relative stability makes it a promising candidate for electric response audiometry