Instrumental conditioning of heart rate in the curarized rat with varied amounts of pretraining.

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Abstract
To evaluate the effectiveness of prior discrimination training on subsequent heart rate (HR) shaping under curare, 30 naive male albino Sprague-Dawley rats were divided into 3 groups on the basis of amount of discrimination training, (0, 2, and 4 hr.). Ss were then curarized and trained to increase or decrease HR with electrical stimulation of the brain as reward. Results indicate that Ss did learn to produce significant changes in HR in the reinforced direction, although amount of discrimination pretraining had no effect on the magnitude of these changes. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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