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 Neuroscijournal_title
Behavioral neuroscienceauthors
Raslear TG,Pierrel-Sorrentino R,Rudnick Fdoi
10.1037//0735-7044.97.3.392subject
Has Abstractpub_date
1983-06-01 00:00:00pages
392-8issue
3eissn
0735-7044issn
1939-0084journal_volume
97pub_type
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