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Psychosomatic Medicine 35:4-12 (1973)
© 1973 American Psychosomatic Society

Prolonged Pre-Avoidance Effects Upon Blood Pressure and Heart Rate in the Dog

DAVID E. ANDERSON PHD1 and JOSEPH V. BRADY PHD1

1 Division of Behavioral Biology, Department of Psychiatry and Behavioral Sciences, The Johns Hopkins University School of Medicine, Baltimore, Maryland

Address for reprint requests: Dr. David E. Anderson, The Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, Md. 21205.

Blood pressure and heart rate were monitored continuously in dogs during extended intervals up to 15 hours before and 2 hours during free-operant shock-avoidance performance. Cardiovascular changes during the pre-avoidance intervals were characterized by sustained and significant increases in blood pressure accompanied by sustained and significant decreases in heart rate. During the 2-hour shock-avoidance period, however, elevations in both blood pressure and heart rate were observed.

Submitted on December 16, 1971
Revised on March 23, 1972




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Instrumental Conditioning of Large-Magnitude, Daily, 12-Hour Blood Pressure Elevations in the Baboon
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[Abstract] [PDF]


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