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The development of temporal resolution: between-channel gap detection in infants and adults.

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 spectr...

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Published in:Journal of Speech, Language & Hearing Research Vol. 49; no. 5; pp. 1104 - 1114
Main Authors: Smith NA, Trainor LJ, Shore DI
Format: research tables/charts Journal Article
Published: American Speech-Language-Hearing Association Oct2006
Online Access:View this record in EBSCOhost
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      dt: Oct2006
      vid: 49
      iid: 5
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      pub: American Speech-Language-Hearing Association
      place: Rockville, Maryland
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        106246288
        2009323232
        10.1044/1092-4388(2006/079)
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        atl: The development of temporal resolution: between-channel gap detection in infants and adults.
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          Smith NA
          Trainor LJ
          Shore DI
        affil: Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, Ontario L8S 4K1, Canada. E-mail: ljt@mcmaster.ca.
      sug:
        subj:
          Auditory Perception In Adulthood
          Auditory Perception In Infancy and Childhood
          Time Factors
          Acoustic Stimulation
          Adult
          Comparative Studies
          Descriptive Statistics
          Infant
          One-Way Analysis of Variance
          T-Tests
          Human
          Adult: 19-44 years
          Infant: 1-23 months
      ab: 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.
      pubtype: Academic Journal
      doctype:
        research
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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