Loudness scaling and masking in rats.


: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.


Behav Neurosci


Behavioral neuroscience


Raslear TG,Pierrel-Sorrentino R,Rudnick F




Has Abstract


1983-06-01 00:00:00












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    abstract::Gerbils aged 3 months and 24+ months were subjected to 5 min of global forebrain ischemia and tested in a radial arm maze (1 trial/day, 50 days). Compared with age-matched, sham-operated controls, ischemic animals were impaired on measures of both working and reference memory. Aged animals were impaired on working mem...

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    journal_title:Behavioral neuroscience

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    authors: Fenton AA,Bures J

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    authors: von Linstow Roloff E,Platt B,Riedel G

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    pub_type: 杂志文章


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    pub_type: 杂志文章


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