Linked Life Data

11124044

Source:http://linkedlifedata.com/resource/pubmed/id/11124044

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2001-2-2
pubmed:abstractText
Previous studies, as well as the present one, report that acute exposure to intermittent tailshocks enhances classical eyeblink conditioning in male rats when trained 24 h after stressor cessation. In Experiment 1, it was determined that the facilitating effect of stress on conditioning could also be obtained in response to a stressor of acute inescapable swim stress but not inescapable noise or the unconditioned stimulus of periorbital eyelid stimulation. These selective responses arose despite comparable enhancements of the stress-related hormone corticosterone in response to tailshocks, periorbital eyelid stimulation, noise stress, and supraelevation in response to swim stress. Although corticosterone is necessary for the enhanced learning in response to stress (Beylin & Shors, 1999), these results suggest that it is not sufficient. In addition, the results suggest that the enhancement is not dependent on common characteristics between the stressor and the conditioning stimuli (stimulus generalization). In Experiment 2, it was determined that the facilitating effect of the stressor on conditioning occurs within 30 min of stressor cessation. Thus, the mechanism responsible for facilitating memory formation is rapidly induced as well as persistently expressed. In Experiment 3, it was determined that exposure to the stressor does not enhance performance of the conditioned response after the response has been acquired. Thus, exposure to the stressor enhances the formation of new associations rather than affecting retention or performance of the motor response. These studies extend the circumstances under which stress is known to enhance associative learning and implicate neural mechanisms of memory enhancement that are rapidly induced and persistently expressed.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1074-7427
pubmed:author
pubmed:copyrightInfo
Copyright 2001 Academic Press.
pubmed:issnType
Print
pubmed:volume
75
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
10-29
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Acute stress rapidly and persistently enhances memory formation in the male rat.
pubmed:affiliation
Department of Psychology and Center for Neuroscience, Rutgers University, Piscataway, New Jersey 08854-8020, USA. shors@rci.rutgers.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't