Document Detail

Frequency specificity of the auditory brain stem response to bone-conducted tones in infants and adults.
MedLine Citation:
PMID:  1601197     Owner:  NLM     Status:  MEDLINE    
Auditory brain stem responses were obtained from normal-hearing infants and adults in response to bone-conducted 500 and 2000 Hz tones presented in quiet and high-pass noise masking. The tones were presented at 70 (500 and 2000 Hz) and 46 (2000 Hz) dB peak to peak equivalent (re: 1 dyne RMS). The high-pass noise-masked waveforms were subtracted in succession to obtain derived responses, providing estimates of the cochlear regions contributing to the nonmasked responses. Findings indicate that the auditory brain stem response to bone-conducted 500 Hz tones is frequency specific for both infants and adults. For 2000 Hz tones, the results show maximum amplitudes for cochlear regions representing the nominal frequency of the tone for adults. For infants, maximum response amplitudes for the derived responses to 2000 Hz, 70 dB tones were obtained within 1/2 octave of the nominal frequency (1410-2000 Hz). Wave V latencies of the derived responses are similar for both groups for 2000 Hz tones, but shorter for infants to 500 Hz tones, supporting the hypothesis that low-frequency bone-conducted stimuli are effectively more intense in infants than adults.
J M Nousak; D R Stapells
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Ear and hearing     Volume:  13     ISSN:  0196-0202     ISO Abbreviation:  Ear Hear     Publication Date:  1992 Apr 
Date Detail:
Created Date:  1992-07-16     Completed Date:  1992-07-16     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8005585     Medline TA:  Ear Hear     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  87-95     Citation Subset:  IM    
Program in Speech and Hearing Sciences, Graduate School and University Center, City University of New York, New York.
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MeSH Terms
Bone Conduction / physiology*
Cochlea / physiology*
Evoked Potentials, Auditory, Brain Stem / physiology*
Perceptual Masking
Sound Spectrography
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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