Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1994-8-24
pubmed:abstractText
In 3 experiments, the authors examined the effect of methylxanthine and amphetamine stimulants on deficits in shuttle-escape responding produced by earlier exposure to inescapable electric shock in rats. Caffeine completely reversed escape deficits in inescapably shocked rats when injected just before shuttle-escape testing but failed to prevent a test deficit when injected before shock pretreatment. Dose-response curves indicated that, whereas caffeine and theophylline were equally effective at reversing escape deficits, amphetamine not only failed to improve performance in preshocked rats but retarded escape in restrained (no-shock) controls. This amphetamine-induced deficit was reversed by cotreatment with caffeine. These data are discussed in terms of the role of adenosine receptor activation in helplessness and conservation-withdrawal.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0735-7044
pubmed:author
pubmed:issnType
Print
pubmed:volume
108
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
254-64
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Stress and adenosine: I. Effect of methylxanthine and amphetamine stimulants on learned helplessness in rats.
pubmed:affiliation
Department of Psychology, University of California, Los Angeles 90024-1563.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.