Calibrated Pure Tone Audiograms in Normal Neonates Based on Evoked Electroencephalographic Responses

Abstract

Pure tone audio-electroencephalography was carried out in neonates. “On” responses were computed at different intensity levels with a rise time of 10 msec and threshold determinations attempted at 250, 500, 1000, 2000, 4000 and 8000 Hz. The results showed the neonatal evoked response levels are within limits of adult hearing thresholds, but latencies of comparable EEG waves are longer in neonates.