The Acquisition of Conditioned Suppression as a Function of Interstimulus Interval Duration

1974 ◽  
Vol 26 (3) ◽  
pp. 405-416 ◽  
Author(s):  
Anthony G. Yeo
Keyword(s):  
Conditioned Suppression ◽  
Emotional Response ◽  
Interstimulus Interval ◽  
Conditioned Emotional Response ◽  
Interval Duration ◽  
Conditioning Procedure ◽  
Control Groups ◽  
Stimulus Novelty ◽  
Classically Conditioned

The effect of interstimulus interval (ISI) variation on the acquisition of a classically conditioned emotional response was investigated using a one-trial conditioning procedure. The optimum ISI was found to be 10 s with a bidirectional gradient for conditioned suppression at ISI above and below 10 s. Control groups demonstrated that conditioning was not a function of either pseudoconditioning, sensitization or stimulus novelty.

The Acquisition of Conditioned Emotional Response as a Function of Intertrial Interval

1976 ◽  
Vol 28 (3) ◽  
pp. 449-458 ◽  
Author(s):  
Anthony Yeo
Keyword(s):  
Conditioned Suppression ◽  
Emotional Response ◽  
Intertrial Interval ◽  
Conditioned Emotional Response ◽  
Conditioning Procedure ◽  
Foreperiod Duration

The effects of intertrial interval (ITI) and foreperiod duration on the acquisition of a conditioned emotional response were investigated using a four-trial conditioning procedure. The optimum ITI was found to be 60 s with a bidirectional gradient for conditioned suppression above and below 60 s. Conditioned supression was found to be directly related to foreperiod duration.

Extinction of the Freezing Component of the CER after Frontal Ablation

1966 ◽  
Vol 19 (1) ◽  
pp. 187-193 ◽  
Author(s):  
Roger W. McIntire
Keyword(s):  
Conditioned Suppression ◽  
Emotional Response ◽  
Conditioned Emotional Response ◽  
Emotional Responses ◽  
Frontal Lobes ◽  
Emotional Behavior ◽  
Specific Effects ◽  
Group A ◽  
Behavior Syndrome ◽  
Frontal Ablation

To determine the specific effects of frontal ablations on emotional behavior, rats were given training in conditioned suppression of bar-pressing and the behavior syndrome of the conditioned emotional response (CER). Ss were then divided into three experimental groups for surgery: Group A (anterior areas of the frontal lobes ablated), Group L (lateral areas of the frontal lobes ablated) and Group S (sham-operated animals). Only the freezing component of the CER was affected by the surgical procedure, and this effect was limited to Group L. The data are interpreted as supporting the hypothesis that the hyperactivity resulting from some frontal ablations results in a decrement in some of the trained emotional responses.

Formation of a Conditioned Emotional Response (CER) Following Lesions of the Amygdaloid Complex in Rats

1963 ◽  
Vol 12 (2) ◽  
pp. 351-358 ◽  
Author(s):  
M. H. Kellicutt ◽  
J. S. Schwartzbaum
Keyword(s):  
Conditioned Suppression ◽  
Emotional Response ◽  
Conditioned Emotional Response ◽  
Amygdaloid Complex ◽  
Control Group ◽  
Motivated Behavior ◽  
Operate Control Group ◽  
Generalization Gradients ◽  
Sham Operate

Formation of a conditioned emotional response (CER), using suppression of food-reinforced bar-pressing as an index, was studied in a group of rats with amygdaloid lesions ( N = 5) and in a sham-operate control group ( N = 5). In contrast to control animals, which typically suppressed in two to three sessions, none of the amygdaloid operates met criterion within the set limit of 15 sessions or showed signs of suppression. Increasing the intensity and duration of shock also proved ineffective in these animals. Only by punishing each bar-press during the CS period could their responding be suppressed. Further tests on generalization of conditioned suppression, performed on two of the control animals, revealed relatively flat generalization gradients, consistent with other findings. Results were discussed in terms of amygdaloid effects on non-reinforced behavior in discrimination situations. “Inhibition” of responding associated with nonreinforcement appears to involve some of the same processes that operate in shock-motivated behavior.

Habituation of Conditioned Suppression

1971 ◽  
Vol 23 (1) ◽  
pp. 126-134 ◽  
Author(s):  
J. R. Millenson ◽  
Jill G. Dent
Keyword(s):  
Conditioned Suppression ◽  
Emotional Response ◽  
Conditioned Emotional Response ◽  
Random Interval ◽  
Variable Duration

Habituation of a conditioned emotional response was investigated using a procedure which eliminated contaminating temporal discriminations. Three rats were trained to bar press on a random interval 60 sec schedule of milk reinforcement and variable duration tone-shock pairings were superimposed upon this baseline. Very little recovery from conditioned suppression was found over 60 sessions of testing and no systematic differences were found after a month's “vacation” from the procedure. Analysis of responding within the CS period showed uniform suppression. The data are discussed in terms of stimulus predictability.

Effects of Amobarbital on the Conditioned Emotional Response and Conditioned Avoidance Response

1966 ◽  
Vol 16 (1) ◽  
pp. 13-16 ◽  
Author(s):  
Dennis K. Kamano ◽  
Louis K. Martin ◽  
Michael E. Ogle ◽  
Barbara J. Powell
Keyword(s):  
Avoidance Response ◽  
Emotional Response ◽  
Conditioned Emotional Response ◽  
Conditioned Avoidance ◽  
Conditioned Avoidance Response
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