Linked Life Data

11892781

Source:http://linkedlifedata.com/resource/pubmed/id/11892781

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2002-3-14
pubmed:abstractText
For most older adults, memory performance depends on the time of day, with performance being optimal early in the morning and declining during the late afternoon hours. In the present study, we asked whether this decline could be ameliorated by a simple stimulant, caffeine. Adults over the age of 65 who considered themselves "morning types" were tested twice over an interval of 5 to 11 days, once in the morning and once in the late afternoon. Participants ingested either coffee with caffeine or decaffeinated coffee at both sessions. Participants who ingested decaffeinated coffee showed a significant decline in memory performance from morning to afternoon. In contrast, those who ingested caffeine showed no decline in performance from morning to afternoon. The results suggest that time-of-day effects may be mediated by nonspecific changes in level of arousal.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0956-7976
pubmed:author
pubmed:issnType
Print
pubmed:volume
13
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
68-71
pubmed:dateRevised
2011-5-20
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Caffeine reduces time-of-day effects on memory performance in older adults.
pubmed:affiliation
Department of Psychology, University of Arizona, Tucson 85721-0068, USA. ryant@u.arizona.edu
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't