| Extracting binaural information from simultaneous targets and distractors: effects of amplitude modulation and asynchronous envelopes. | |
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MedLine Citation:
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PMID: 20815459 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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When different components of a stimulus carry different binaural information, processing of binaural information in a target component is often affected. The present experiments examine whether such interference is affected by amplitude modulation and the relative phase of modulation of the target and distractors. In all experiments, listeners attempted to discriminate interaural time differences of a target stimulus in the presence of distractor stimuli with ITD=0. In Experiment 1, modulation of the distractors but not the target reduced interference between components. In Experiment 2, synthesized musical notes exhibited little binaural interference when there were slight asynchronies between different streams of notes (31 or 62 ms). The remaining experiments suggested that the reduction in binaural interference in the previous experiments was due neither to the complex spectra of the synthesized notes nor to greater detectability of the target in the presence of modulated distractors. These data suggest that this interference is reduced when components are modulated in ways that result in the target appearing briefly in isolation, not because of segregation cues. These data also suggest that modulation and asynchronies between modulators that might be encountered in real-world listening situations are adequate to reduce binaural interference to inconsequential levels. |
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Authors:
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Mark A Stellmack; Andrew J Byrne; Neal F Viemeister |
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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: 128 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-09-06 Completed Date: 2011-01-12 Revised Date: 2011-09-13 |
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: 1235-44 Citation Subset: IM |
Affiliation:
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Department of Psychology, University of Minnesota, Minneapolis, Minnesota 55455, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Audiometry, Pure-Tone Auditory Pathways / physiology* Auditory Perception* Auditory Threshold Cues Female Humans Male Perceptual Masking* Psychoacoustics Signal Detection, Psychological* Time Factors |
| Grant Support | |
ID/Acronym/Agency:
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R01 DC000683-21/DC/NIDCD NIH HHS; R01DC 00683/DC/NIDCD NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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