| Exploring the additivity of binaural and monaural masking release. | |
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MedLine Citation:
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PMID: 21476663 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Experiment 1 examined comodulation masking release (CMR) for a 700-Hz tonal signal under conditions of N(o)S(o) (noise and signal interaurally in phase) and N(o)S(π) (noise in phase, signal out of phase) stimulation. The baseline stimulus for CMR was either a single 24-Hz wide narrowband noise centered on the signal frequency [on-signal band (OSB)] or the OSB plus, a set of flanking noise bands having random envelopes. Masking noise was either gated or continuous. The CMR, defined with respect to either the OSB or the random noise baseline, was smaller for N(o)S(π) than N(o)S(o) stimulation, particularly when the masker was continuous. Experiment 2 examined whether the same pattern of results would be obtained for a 2000-Hz signal frequency; the number of flanking bands was also manipulated (two versus eight). Results again showed smaller CMR for N(o)S(π) than N(o)S(o) stimulation for both continuous and gated masking noise. The CMR was larger with eight than with two flanking bands, and this difference was greater for N(o)S(o) than N(o)S(π). The results of this study are compatible with serial mechanisms of binaural and monaural masking release, but they indicate that the combined masking release (binaural masking-level difference and CMR) falls short of being additive. |
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Authors:
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Joseph W Hall; Emily Buss; John H Grose |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 129 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-04-11 Completed Date: 2011-08-16 Revised Date: 2012-04-02 |
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: 2080-7 Citation Subset: IM |
Affiliation:
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Department of Otolaryngology∕Head and Neck Surgery, University of North Carolina, School of Medicine, Chapel Hill, North Carolina 27599, USA. jwh@med.unc.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Adult Auditory Threshold / physiology* Female Humans Male Middle Aged Noise Perceptual Masking / physiology* Psychoacoustics* Sound Localization / physiology* Young Adult |
| Grant Support | |
ID/Acronym/Agency:
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R01 DC00397/DC/NIDCD NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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