scholarly journals Rat behaviors during unsignaled avoidance and conditioned suppression training

1977 ◽  
Vol 9 (5) ◽  
pp. 373-376 ◽  
Author(s):  
A. E. Roberts ◽  
Karol G. Cooper ◽  
Tonya L. Richey
Keyword(s):  
Conditioned Suppression ◽  
Conditioned Suppression Training

Conditioned Suppression and Acceleration of Two Concurrent Responses in Rhesus Monkeys

1969 ◽  
Vol 24 (2) ◽  
pp. 375-387 ◽  
Author(s):  
Wendon W. Henton ◽  
Charles L. Salzberg ◽  
John J. Jordan
Keyword(s):  
Conditioned Suppression ◽  
Rhesus Monkeys ◽  
Variable Interval ◽  
Interval Training ◽  
High Rate ◽  
Unavoidable Shock ◽  
Lever Pressing ◽  
Initial Variable ◽  
Rate Of Response ◽  
Conditioned Suppression Training

Two rhesus monkeys were exposed to conditioned suppression training in which a 20-sec. stimulus, terminated by unavoidable shock, was superimposed upon a variable interval 90-sec. reinforcement schedule. A concurrent response which had no programmed consequence was recorded during initial variable interval training, acquisition, extinction, and reacquisition of conditioned suppression of the reinforced lever-pressing response. A peak in the distribution of response 2 reliably occurred 30 to 75 sec. following the average lever-pressing (response 1) reinforcement interval. With suppression training, the presentation of the suppression stimulus was reliably followed by a changeover from response 1 to response 2; the presentation of the unavoidable shock immediately resulted in a changeover from response 2 to response 1. The rate of response 2 during the suppression stimulus declined to near zero during extinction of conditioned suppression and increased to a high rate when the suppression stimulus was again terminated by unavoidable shock. The rate of response 2 was dependent upon the intensity of the unavoidable shock.

scholarly journals Rats’ location during conditioned suppression training

1992 ◽  
Vol 20 (1) ◽  
pp. 8-16 ◽  
Author(s):  
Rick A. Bevins ◽  
John J. B. Ayres
Keyword(s):  
Conditioned Suppression ◽  
Conditioned Suppression Training

Appetitive–Aversive Interactions: Superconditioning of Fear by an Appetitive CS

1977 ◽  
Vol 29 (1) ◽  
pp. 71-83 ◽  
Author(s):  
Anthony Dickinson
Keyword(s):  
Fear Conditioning ◽  
Conditioned Suppression ◽  
Aversive Conditioning ◽  
Free Food ◽  
Functional Similarity ◽  
Control Groups ◽  
Conditioned Inhibitor ◽  
Compound Training ◽  
The Difference ◽  
Conditioned Suppression Training

Four groups of rats received conditioned suppression training in which a tone and light compound was reinforced with shock. If the light had been previously paired with free food, enhanced fear conditioning accrued to the tone during compound training relative to control groups pre-exposed to the light alone, the light semi-randomly associated with food, or the light unpaired with food. The second experiment replicated the difference in aversive conditioning for the groups receiving the light either paired or unpaired with food. The results are discussed in terms of the functional similarity of a conditioned excitor for food and a conditioned inhibitor for shock.

scholarly journals The effects of morphine on conditioned suppression in rhesus monkeys

1969 ◽  
Vol 17 (3) ◽  
pp. 161-162 ◽  
Author(s):  
Stephen G. Holtzman ◽  
Julian E. Villarreal
Keyword(s):  
Conditioned Suppression ◽  
Rhesus Monkeys

Inhibitory Conditioning Resulting from a Reduction in the Magnitude of Reinforcement

1982 ◽  
Vol 34 (3b) ◽  
pp. 163-180 ◽  
Author(s):  
M. M. Cotton ◽  
Glyn Goodall ◽  
N. J. Mackintosh
Keyword(s):  
Stimulus Control ◽  
Shock Intensity ◽  
Conditioned Suppression ◽  
Summation Test ◽  
Control Group ◽  
Conditioned Inhibitor ◽  
Inhibitory Conditioning ◽  
Experimental Subjects ◽  
The Difference

Five experiments, all employing conditioned suppression in rats, studied inhibitory conditioning to a stimulus signalling a reduction in shock intensity. Experimental subjects were conditioned to a tone signalling a 1·0 mA shock and to a tone-light compound signalling a 0·4 mA shock. On a summation test in which it alleviated the suppression maintained by a third stimulus also associated with the 1·0 mA shock, the light was established as a conditioned inhibitor. Retardation tests gave ambiguous results: the light was relatively slow to condition when paired, either alone or in conjunction with another stimulus, with the 0·4 mA shock, but the difference from a novel stimulus control group was not significant. Two final experiments found no evidence at all of inhibition on a summation test in which the light was presented in conjunction with a stimulus that had itself been associated with the 0·4 mA shock. The results of these experiments have implications for the question of what animals learn during the course of inhibitory conditioning.

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