Pure-tone threshold prediction by 80-Hz amplitude-modulation following response.
The usefulness of 80-Hz amplitude-modulation following response (AMFR) detected by phase spectral analysis to predict the hearing threshold during sleep was evaluated in 20 normal adults, 8 normal children and 37 children with hearing impairment. The onset effect of tonal stimulus on 80-Hz steady state response was studied in normal adults during sleep and a threshold of 80-Hz AMFR detected by phase spectral analysis was compared with that of ABR elicited by tone pips in children during sleep. Although 80-Hz AMFR is not appropriate for the assessment of hearing in adults, it appears useful for evaluating hearing in young children during sleep. Hearing prediction by 80-Hz AMFR appears to be more accurate than that by ABR elicited with tone pips. The onset effect of stimulus on 80-Hz AMFR with modulation depth of 95% was less than 80-Hz SSR evoked by clicks.
Aoyagi
M
M
Department of Otolaryngology, Yamagata University School of Medicine, Japan.
Kiren
T
T
Furuse
H
H
Fuse
T
T
Suzuki
Y
Y
Yokota
M
M
Koike
Y
Y
D000161:Acoustic Stimulation / Q000379:methods; D000328:Adult; D001300:Audiometry, Evoked Response; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold / Q000502:physiology*; D002648:Child; D002675:Child, Preschool; D004569:Electroencephalography; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology; D005544:Forecasting; D006309:Hearing / Q000502:physiology*; D006311:Hearing Disorders / Q000175:diagnosis / Q000503:physiopathology*; D006801:Humans; D010034:Otitis Media with Effusion / Q000503:physiopathology; D011930:Reaction Time; D012815:Signal Processing, Computer-Assisted; D012890:Sleep / Q000502:physiology*