In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 120, No. 5_Supplement ( 2006-11-01), p. 3245-3245
Abstract:
The reliability and frequency specificity of 80-Hz auditory steady-state response (80-Hz ASSR) elicited by sinusoidally amplitude-modulated (SAM tones) tones and detected by phase coherence were evaluated as a measure of the hearing level in young children. The 80-Hz ASSR at a carrier frequency of 1000 Hz was monitored in 169 ears of 125 hearing-impaired children and auditory brainstem response (ABR) elicited by tone pips was examined in 93 ears. Both responses were examined during sleep, and the thresholds were compared with the behavioral hearing threshold, which was determined by standard pure-tone audiometry or play audiometry. In 24 ears with various patterns of audiogram, 80-Hz ASSRs were examined at different carrier frequencies, and the threshold patterns were compared with the audiograms to investigate the frequency specificity of ASSR. The correlation coefficient between the threshold of 80-Hz ASSR and pure-tone threshold (r=0.863) was higher than that for ABR (r=0.828). The threshold patterns of 80-Hz ASSR clearly followed the corresponding audiogram patterns in all types of hearing impairment. These findings suggest that 80-Hz ASSR elicited by SAM tones and detected by phase coherence is a useful audiometric device for the determination of hearing level in a frequency-specific manner in children.
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
2006
detail.hit.zdb_id:
1461063-2
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