| STRESS-INDUCED BREAKDOWN OF AN APPETITIVE DISCRIMINATION. | |
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MedLine Citation:
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PMID: 14302745 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Rats trained to discriminate between S(D) and S(Delta) for food reinforcement showed marked impairments in this discrimination when strong, unavoidable shocks occurred at the termination of a third stimulus. The predominant feature of this impairment was a supernormal rate of unreinforced (S(Delta)) behavior. Shocks delivered without exteroceptive warning also led to a discriminative breakdown. The effect was a direct function of shock intensity. When behavior was strongly suppressed in the third stimulus by response-correlated shock ("punishment"), instead of unavoidable shock, breakdowns were only temporary; as soon as responding recovered from its overall suppression, discriminative performance returned to normal. The discriminative deterioration may be interpreted as an emotional by-product of frequent aversive stimulation, but accidental contingencies could also have played a role. |
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Authors:
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E HEARST |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of the experimental analysis of behavior Volume: 8 ISSN: 0022-5002 ISO Abbreviation: J Exp Anal Behav Publication Date: 1965 May |
Date Detail:
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Created Date: 1965-09-01 Completed Date: 1996-12-01 Revised Date: 2010-09-21 |
Medline Journal Info:
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Nlm Unique ID: 0203727 Medline TA: J Exp Anal Behav Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 135-46 Citation Subset: OM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Appetite* Discrimination Learning* Electroshock* Punishment* Rats* Reinforcement (Psychology)* Research* Stress, Physiological* |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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