The aim of this study was to evaluate the auditory steady-state response (ASSR) in children and to compare the ASSR thresholds with behavioral hearing thresholds and the click evoked auditory brain stem response (ABR). The ASSR of 39 infants and children with hearing loss between the ages of 0 to 75 months was examined. Both ears of all the subjects were tested with Audera (Grason-Stadler Corporation).
The ASSR thresholds were 15 to 22dB higher than behavioral hearing thresholds, but significantly correlated with behavioral hearing thresholds. We investigated the ASSR thresholds in cases showing no response ABR at 105dBnHL. The ASSR thresholds were present in all cases, particularly in more than half of the ears at 500 and 1000Hz. These results were useful for detection and diagnosis of hearing loss and for the fitting of hearing aids.
The ASSR is useful for performing objective measurements of the frequency-specific healing level. Furthermore, the ASSR may quantify hearing losses in the severe to profound range, and indicate some amount of residual hearing.
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