Document Detail

Speech perception in gated noise: the effects of temporal resolution.
MedLine Citation:
PMID:  16708964     Owner:  NLM     Status:  MEDLINE    
Previous investigations have suggested that hearing-impaired (HI) listeners have reduced masking release (MR) compared to normal hearing listeners (NH) when they listen in modulated noise. The current study examined the following questions that have not been clearly answered: First, when HI listeners are amplified so that their performance is equal to that of NH listeners in quiet and in steady noise, do HI listeners still show reduced MR with modulated noise when compared to NH listeners? Second, is the masking release the same for sentences and CV syllables? Third, does forward masking significantly contribute to the variability in performance among HI listeners? To compensate for reduced hearing sensitivity for HI listeners, the spectrum levels of both speech and noise were adjusted based on the individual hearing loss. There was no significant difference between the performance of NH listeners and that of HI listeners in steady noise and in quiet. However, the amount of MR for sentences and for CV syllables was significantly reduced for HI listeners. For sentence recognition, the amount of MR seemed to be more related to hearing sensitivity for low-to-mid frequencies than to forward masking. In contrast, forward masking thresholds appear to be a major contributor to the amount of MR for syllable recognition.
Su-Hyun Jin; Peggy B Nelson
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  119     ISSN:  0001-4966     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2006 May 
Date Detail:
Created Date:  2006-05-19     Completed Date:  2007-08-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3097-108     Citation Subset:  IM    
Division of Communication Disorders, University of Wyoming, Laramie, Wyoming 82070, USA.
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MeSH Terms
Acoustic Stimulation / methods
Analysis of Variance
Auditory Threshold
Case-Control Studies
Hearing Loss, Sensorineural / physiopathology*
Middle Aged
Noise / adverse effects*
Perceptual Masking / physiology
Regression Analysis
Speech Perception / physiology*

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

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