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