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Behavioral limits of auditory temporal resolution in the rat: amplitude modulation and duration discrimination.

Authors
  • Kelly, Jack B
  • Cooke, James E
  • Gilbride, Patrick C
  • Mitchell, Craig
  • Zhang, Huiming
Type
Published Article
Journal
Journal of Comparative and Physiological Psychology
Publisher
American Psychological Association
Publication Date
May 01, 2006
Volume
120
Issue
2
Pages
98–105
Identifiers
PMID: 16719587
Source
Medline
License
Unknown

Abstract

Thresholds for detecting the presence of amplitude modulation in a noise carrier were determined for rats using conditioned avoidance procedures. There was a progressive increase in threshold with modulation rates between 5 Hz and 2 kHz. Further tests were conducted to determine difference thresholds for detecting an increase in modulation rate for standard rates of 10, 50, and 100 Hz. The size of the difference threshold increased progressively as the standard rate increased. In addition, thresholds for detecting an increase in the duration of a noise burst were determined for various standard durations. The difference thresholds were constant for values between 10 and 50 ms but increased progressively, with standard durations between 0.1 and 1.0 s.

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