Document Detail

Ontogenetic differences in short-term retention of Pavlovian conditioning.
MedLine Citation:
PMID:  2721819     Owner:  NLM     Status:  MEDLINE    
In the present series of studies 16- and 21-day-old rats acquired an aversion to a black compartment (CS+) paired with footshock, only if given preconditioning exposure to a white chamber (CS-) not paired with footshock. The strength of conditioning was inversely related to the length of the retention interval in both age groups. However, the rate of forgetting was accelerated in the 16-day-old subjects, indicating infantile amnesia for the conditioned aversion. Strength of conditioning was also inversely related to the length of the CS-/CS+ interval in both age groups, indicating that expression of the aversion is critically dependent on an active memory of the CS- at the time of conditioning. Additionally, there was an ontogenetic decrease in the rate of forgetting of the CS-, indicating infantile amnesia for elements of the conditioning episode that did not predict occurrence of US.
J S Miller; N E Spear
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Developmental psychobiology     Volume:  22     ISSN:  0012-1630     ISO Abbreviation:  Dev Psychobiol     Publication Date:  1989 May 
Date Detail:
Created Date:  1989-06-23     Completed Date:  1989-06-23     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0164074     Medline TA:  Dev Psychobiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  377-87     Citation Subset:  IM    
Center for Developmental Psychobiology, State University of New York, Binghamton 13901.
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MeSH Terms
Aging / psychology*
Association Learning
Avoidance Learning
Conditioning, Classical*
Memory, Short-Term*
Rats, Inbred Strains
Retention (Psychology)
Grant Support

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