| Effects of training in increment-detection and intensity-discrimination tasks. | |
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MedLine Citation:
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PMID: 20331135 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Subjects use different cues when asked to detect a brief increment in a longer duration tone (increment detection) than when asked to discriminate between two tones of the same duration that differ only in level (intensity discrimination). To determine whether experience in one task would generalize or interfere with performance in the other, a group of six subjects completed 4000 trials in an increment detection task, followed by 800 trials of intensity discrimination, and final 800 trials of increment detection. A second group of subjects was tested in the reverse pattern, beginning with 4000 trials of intensity discrimination. The increment or signal was a 90-ms, 4-kHz tone. The pedestal or standard was a 490- or 90-ms, 4-kHz tone presented at 70-dB sound pressure level. A two-interval, forced choice adaptive procedure was used to estimate the level of the increment required for 71% correct. The results showed modest improvement over time for two subjects in increment detection and one in intensity discrimination, but at least one subject showed the opposite effect in each task. There was no generalization or interference between the two tasks and no correlation between increment detection and intensity discrimination across the 12 subjects. [Work supported by NIH.]. |
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Authors:
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Walt Jesteadt; Harisadhan Patra; Melissa Krivohlavek; Cynthia Rutledge |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 127 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-24 Completed Date: - Revised Date: - |
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: 2015 Citation Subset: IM |
Affiliation:
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Boys Town Natl. Res. Hospital, 555 N. 30th St., Omaha, NE 68131. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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