Skin Resistance Recording in the Unrestrained Rat.
The level of basal skin resistance is proposed as a measure of motivation. It is relatively simple to obtain and can be measured concurrently with behavior of interest to the experimenter. The technique described requires a grid floor, but the assessment procedure does not affect the organism's state because of the subthreshold measuring current that is used. This method in no way restrains the rat and can therefore be used in an unlimited number of experimental situations.
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Kaplan
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