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 (N_a-P_a and N₁-P₂) and the variability of amplitudes and (2) absolute latencies (N_a 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

Key Words:

• Early averaged electroencephalic response (AER)
• Late AER
• Electric response audiometry (ERA)