Loudness scaling and masking in rats.

Abstract:

:Two groups of rats were trained on operant discriminations in which the discriminanda were two different sound pressure levels of a 4-kHz tone. The discriminanda were chosen so that the loudness difference between stimuli was equivalent for each group when calculated from a power function with an exponent of .35. Half of each group learned the discrimination in quiet, and the other half learned it in a background of white noise. Within the quiet and the noise conditions, the asymptotic discriminability of stimuli separated by equal loudness differences was equivalent, and discriminability was lower in noise. This is consistent with both the human literature on masked loudness and a model of psychophysical scaling (Pierrel-Sorrentino & Raslear, 1980) in which animals judge perceived differences between stimuli.

journal_name

Behav Neurosci

journal_title

Behavioral neuroscience

authors

Raslear TG,Pierrel-Sorrentino R,Rudnick F

doi

10.1037//0735-7044.97.3.392

subject

Has Abstract

pub_date

1983-06-01 00:00:00

pages

392-8

issue

3

eissn

0735-7044

issn

1939-0084

journal_volume

97

pub_type

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