| Inter-individual differences in binaural detection of low-frequency or high-frequency tonal signals masked by narrow-band or broadband noise. | |
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MedLine Citation:
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PMID: 9566329 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Detection thresholds for either 500-Hz tones or 4-kHz tones were measured for a group of 19 listeners utilizing the interaural configurations NoSo and NoS pi. Both broadband (100-8500 Hz) noises and narrow-band (50-Hz-wide) noises served as maskers. In addition, direct measures of the listeners' sensitivities to changes in interaural temporal differences (ITDs) and interaural intensitive differences (IIDs) were measured using 400-Hz-wide noises centered at 500 Hz or 4 kHz. A rather large range of inter-individual differences in threshold was observed for 4-kHz tonal signals masked by narrow-band noise in the NoS pi configuration. This result is consistent with several sets of data from our previous experiments conducted over more than a decade. A broad range of thresholds was also obtained for 500-Hz tonal signals masked by narrow-band noise in the NoS pi configuration. This outcome, coupled with the fact that the use of a broadband masker did not yield a large distribution of thresholds for the detection of a 500-Hz tone masked by a broad band of noise, suggests that it is the use of a narrow-band masker, per se, that results in a large range of thresholds. Statistical analyses revealed that thresholds in the NoS pi detection tasks were not highly correlated with thresholds measured in the ITD- and the IID-discrimination tasks. Nevertheless, the five listeners who were the most sensitive in the narrow-band NoS pi detection and the five listeners who were the least sensitive in the narrow-band NoS pi detection tasks were those who were the most and least sensitive, respectively, to changes in ITDs and to changes in IIDs. |
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Authors:
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L R Bernstein; C Trahiotis; E L Hyde |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 103 ISSN: 0001-4966 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 1998 Apr |
Date Detail:
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Created Date: 1998-06-09 Completed Date: 1998-06-09 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 2069-78 Citation Subset: IM |
Affiliation:
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Department of Surgery (Otolaryngology), University of Connecticut Health Center, Farmington 06030, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Auditory Perception
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physiology* Auditory Threshold Humans Noise / adverse effects* Perceptual Masking / physiology* Pitch Discrimination / physiology* Time Factors |
| Grant Support | |
ID/Acronym/Agency:
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DC-00234/DC/NIDCD NIH HHS; DC-02103/DC/NIDCD NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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