Abstract
Three experiments assessed the conditions that potentiate effects of an electroconvulsive shock (ECS) administered 24 h after avoidance training. Stimuli present immediately prior to the ECS were systematically varied. In Experiment 1, which employed a passive avoidance task, the primary determinant of whether the ECS disrupted retention was whether the situational cues present at the time of ECS delivery were those associated with the initial training experience: ECS disrupted performance only when it was administered in the original training apparatus, regardless of whether or not a footshock was presented immediately prior to ECS. In Experiment 2, which employed an active, shuttlebox avoidance task, both the situational cues from the training apparatus and a footshock were necessary to potentiate the disruptive effects of the ECS. Experiment 3 revealed that ECS effects on performance of the active avoidance task can also be potentiated by a combination of apparatus cues and the warning signal used in initial training. These results are interpreted as indicating that informational functions of stimuli present when an ECS is administered are important determinants of the effects of the ECS.
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This research was supported in part by funds from the Research Board of the University of Illinois and in part by Grant MH-04202 to R. L. Solomon.
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Gerson, R., Hendersen, R.W. Conditions that potentiate the effects of electroconvulsive shock administered 24 hours after avoidance training. Animal Learning & Behavior 6, 346–351 (1978). https://doi.org/10.3758/BF03209625
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DOI: https://doi.org/10.3758/BF03209625