Title

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

Document Type

Article

Publication Date

2006

Publication Title

Journal of Comparative Psychology

Volume

120

Issue

2

First Page

98

Last Page

105

DOI

10.1037/0735-7036.120.2.98

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. Copyright 2006 by the American Psychological Association.

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