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 spectrally disparate markers). This ability appears crucial ... Research Article
Research Article  |   November 14, 2016
The Development of Temporal Resolution: Between-Channel Gap Detection in Infants and Adults
 
Author Affiliations & Notes
  • Nicholas A. Smith
    McMaster University, Hamilton, Ontario, Canada
  • Laurel J. Trainor
    McMaster University, Hamilton, Ontario, Canada
  • David I. Shore
    McMaster University, Hamilton, Ontario, Canada
  • Contact author: Laurel J. Trainor, Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, Ontario L8S 4K1, Canada. E-mail: ljt@mcmaster.ca
Article Information
Hearing & Speech Perception / Acoustics / Hearing Disorders / Hearing / Research Articles
Research Article   |   November 14, 2016
The Development of Temporal Resolution: Between-Channel Gap Detection in Infants and Adults
Journal of Speech, Language, and Hearing Research, November 2016, Vol. 49, 1104-1113. doi:10.1044/1092-4388(2006/079)
History: Received December 16, 2004 , Revised June 1, 2005 , Accepted March 20, 2006
 
Journal of Speech, Language, and Hearing Research, November 2016, Vol. 49, 1104-1113. doi:10.1044/1092-4388(2006/079)
History: Received December 16, 2004; Revised June 1, 2005; Accepted March 20, 2006
Web of Science® Times Cited: 13

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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