Elsevier

Physiology & Behavior

Volume 28, Issue 4, April 1982, Pages 707-710
Physiology & Behavior

Sodium chloride detection threshold in the rat determined using a simple operant taste discrimination task

https://doi.org/10.1016/0031-9384(82)90055-5Get rights and content

Abstract

A method for training rats to lick at high rates for a water reinforcer after presentation of one tastant and to inhibit or decrease response rate to avoid a time-out punisher after presentation of another tastant is described and evaluated. The method produced rapid acquisition of simple discrimination and detection tasks, The absolute mean detection threshold for sodium chloride in three rats was 0.0038% (0.0031%–0.0043%). The operant conditioning technique is simple, efficient, and should prove useful for psychophysical and physiological studies of gustation.

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