| Gap detection and masking in hearing-impaired and normal-hearing subjects. | |
| | |
MedLine Citation:
|
PMID: 3584692 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Subjects with cochlear impairments often show reduced temporal resolution as measured in gap-detection tasks. The primary goals of these experiments were: to assess the extent to which the enlarged gap thresholds can be explained by elevations in absolute threshold; and to determine whether the large gap thresholds can be explained by the same processes that lead to a slower-than-normal recovery from forward masking. In experiment I gap thresholds were measured for nine unilaterally and eight bilaterally impaired subjects, using bandlimited noise stimuli centered at 0.5, 1.0, and 2.0 kHz. Gap thresholds were usually larger for the impaired ears, even when the comparisons were made at equal sensation levels (SLs). Gap thresholds tended to increase with increasing absolute threshold, but the scatter of gap thresholds was large for a given degree of hearing loss. In experiment II threshold was measured as a function of the delay between the onset of a 210-ms masker and the onset of a 10-ms signal in both simultaneous- and forward-masking conditions. The signal frequency was equal to the center frequency of the bandlimited noise masker, which was 0.5, 1.0, or 2.0 kHz. Five subjects with unilateral cochlear impairments, two subjects with bilateral impairments, and two normal subjects were tested. The rate of recovery from forward masking, particularly the initial rate, was usually slower for the impaired ears, even when the maskers were presented at equal SLs. Large gap thresholds tended to be associated with slow rates of recovery from forward masking. |
| | |
Authors:
|
B R Glasberg; B C Moore; S P Bacon |
Publication Detail:
|
Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
|
Title: The Journal of the Acoustical Society of America Volume: 81 ISSN: 0001-4966 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 1987 May |
Date Detail:
|
Created Date: 1987-07-08 Completed Date: 1987-07-08 Revised Date: 2006-12-27 |
Medline Journal Info:
|
Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 1546-56 Citation Subset: IM |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Acoustic Stimulation Adolescent Adult Aged Auditory Threshold* Cochlea / physiology*, physiopathology Female Hearing Loss / physiopathology* Humans Male Middle Aged Reference Values |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Minimum stimulus levels for temporal gap resolution in listeners with sensorineural hearing loss.
Next Document: Relations among temporal acuity, hearing loss, and the perception of speech distorted by noise and r...