| The development of temporal resolution: between-channel gap detection in infants and adults. | |
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MedLine Citation:
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PMID: 17077218 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: Infants have a good ability to detect brief silent gaps between 2 short identical sound markers (within-channel gap detection), with thresholds between 2 and 11 ms. The present experiment traces the development of temporal resolution for between-channel gaps (i.e., gaps delineated by spectrally disparate markers). This ability appears crucial for the perception of complex stimuli such as speech and is thought to reflect more central auditory processing. METHOD: Infants age 6-7.5 months and adults were tested in a between-channel gap detection task using a conditioned head-turn procedure. Gaps were marked by 1- and 4-kHz Gaussian-enveloped sine-tone markers. RESULTS: Infant gap thresholds were between 30 and 40 ms under conditions in which adult thresholds were between 10 and 20 ms. CONCLUSIONS: Unlike within-channel gap detection, the central temporal processing required for between-channel gap detection is still immature at 6 months of age. |
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Authors:
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Nicholas A Smith; Laurel J Trainor; David I Shore |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of speech, language, and hearing research : JSLHR Volume: 49 ISSN: 1092-4388 ISO Abbreviation: J. Speech Lang. Hear. Res. Publication Date: 2006 Oct |
Date Detail:
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Created Date: 2006-11-01 Completed Date: 2007-03-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9705610 Medline TA: J Speech Lang Hear Res Country: United States |
Other Details:
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Languages: eng Pagination: 1104-13 Citation Subset: IM |
Affiliation:
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Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, Ontario L8S 4K1, Canada. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation
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methods* Adult Age Factors Analysis of Variance Auditory Cortex / physiology* Auditory Perception / physiology* Female Humans Infant Male Psychoacoustics Reaction Time / physiology* |
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