Document Detail


The development of temporal resolution: between-channel gap detection in infants and adults.
MedLine Citation:
PMID:  17077218     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
Nicholas A Smith; Laurel J Trainor; David I Shore
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Publication Detail:
Type:  Journal Article    
Journal Detail:
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:
Created Date:  2006-11-01     Completed Date:  2007-03-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9705610     Medline TA:  J Speech Lang Hear Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1104-13     Citation Subset:  IM    
Affiliation:
Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, Ontario L8S 4K1, Canada.
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MeSH Terms
Descriptor/Qualifier:
Acoustic Stimulation / methods*
Adult
Age Factors
Analysis of Variance
Auditory Cortex / physiology*
Auditory Perception / physiology*
Female
Humans
Infant
Male
Psychoacoustics
Reaction Time / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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