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Cardiovascular Concomitants of the Conditioned Emotional Response in the Monkey

William C. Stebbins and Orville A. Smith, Jr.
Science
New Series, Vol. 144, No. 3620 (May 15, 1964), pp. 881-883
Stable URL: http://www.jstor.org/stable/1712754
Page Count: 3
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Cardiovascular Concomitants of the Conditioned Emotional Response in the Monkey
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Abstract

Flow transducers were surgically implanted on the terminal aorta of five monkeys. A classical conditioning procedure, in which a light preceded a brief shock, was superimposed upon a variable-interval schedule of food reinforcement for key pressing (three monkeys) and alternated with an avoidance schedule of shock reinforcement for key pressing (two monkeys). Suppression of the rate of the response of key pressing and sizable increase in blood flow and heart rate during the light were obtained for all animals.

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