| Relative effects of increment and pedestal duration on the detection of intensity increments. | |
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MedLine Citation:
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PMID: 21476665 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The detection of a brief increment in the intensity of a longer duration pedestal is commonly used as a measure of intensity-resolution. Increment detection is known to improve with increasing duration of the increment and also with increasing duration of the pedestal, but the relative effects of these two parameters have not been explored in the same study. In several past studies of the effects of increment duration, pedestal duration was increased as increment duration increased. In the present study, increment and pedestal duration were independently manipulated. Increment-detection thresholds were determined for four subjects with normal-hearing using a 500- or 4000-Hz pedestal presented at 60 dB sound pressure level (SPL). Increment durations were 10, 20, 40, 80, 160, and 320 ms. Pedestal durations were 20, 40, 80, 160, and 320 ms. Each increment duration was combined with all pedestals of equal or greater duration. Multiple-regression analyses indicate that increment detection under these conditions is determined primarily by pedestal duration. Follow-up experiments ruled out effects of off-frequency listening or overshoot. The results suggest that effects of increment duration have been confounded by effects of pedestal duration in studies that co-varied increment and pedestal duration. Implications for models of temporal integration are discussed. |
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Authors:
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Daniel L Valente; Harisadhan Patra; Walt Jesteadt |
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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: 2095-103 Citation Subset: IM |
Affiliation:
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Center for Hearing Research, Boys Town National Research Hospital, 555 North 30th Street, Omaha, Nebraska 68131, USA. daniel.valente@boystown.org |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation
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methods* Adaptation, Physiological / physiology Adult Auditory Threshold / physiology* Female Hearing / physiology* Humans Male Models, Neurological* Pitch Perception / physiology Psychoacoustics* Young Adult |
| Grant Support | |
ID/Acronym/Agency:
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P30 DC 004662/DC/NIDCD NIH HHS; R01 DC 006648/DC/NIDCD NIH HHS; T32 DC000013/DC/NIDCD NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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