| Perceptual learning and generalization resulting from training on an auditory amplitude-modulation detection task. | |
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MedLine Citation:
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PMID: 21361447 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Fluctuations in sound amplitude provide important cues to the identity of many sounds including speech. Of interest here was whether the ability to detect these fluctuations can be improved with practice, and if so whether this learning generalizes to untrained cases. To address these issues, normal-hearing adults (n = 9) were trained to detect sinusoidal amplitude modulation (SAM; 80-Hz rate, 3-4 kHz bandpass carrier) 720 trials/day for 6-7 days and were tested before and after training on related SAM-detection and SAM-rate-discrimination conditions. Controls (n = 9) only participated in the pre- and post-tests. The trained listeners improved more than the controls on the trained condition between the pre- and post-tests, but different subgroups of trained listeners required different amounts of practice to reach asymptotic performance, ranging from 1 (n = 6) to 4-6 (n = 3) sessions. This training-induced learning did not generalize to detection with two untrained carrier spectra (5 kHz low-pass and 0.5-1.5 kHz bandpass) or to rate discrimination with the trained rate and carrier spectrum, but there was some indication that it generalized to detection with two untrained rates (30 and 150 Hz). Thus, practice improved the ability to detect amplitude modulation, but the generalization of this learning to untrained cases was somewhat limited. |
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Authors:
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Matthew B Fitzgerald; Beverly A Wright |
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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 Feb |
Date Detail:
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Created Date: 2011-03-02 Completed Date: 2011-06-20 Revised Date: 2012-02-01 |
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: 898-906 Citation Subset: IM |
Affiliation:
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Department of Otolaryngology, New York University School of Medicine, 550 First Avenue, NBV-5E5, New York, New York 10016, USA. matthew.fitzgerald@nyumc.org |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Adolescent Analysis of Variance Case-Control Studies Cues* Discrimination Learning* Female Humans Male Pitch Discrimination* Pitch Perception* Psychoacoustics* Signal Detection, Psychological* Young Adult |
| Grant Support | |
ID/Acronym/Agency:
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R00 DC009459-03/DC/NIDCD NIH HHS; R00 DC009459-04/DC/NIDCD NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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