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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1982-5-12
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pubmed:abstractText |
Male Wistar rats were chronically implanted at weaning with electrodes for recording EEG amd EMG. From one month of age, they were randomly assigned to either 24 h or 2 h daily 'enriched' (EC), 'standard' (SC) or 'isolated' (IC) rearing conditions. The 24 h-EC group showed the following changes with respect to both the SC and the IC groups: (a) more quiet sleep time; (b) more active sleep time, and (c) shorter active sleep latency. These differences were evident by the third week of environmental conditioning, became statistically significant by 4 weeks, and continued to increase throughout the rest of the enrichment period. None of the sleep parameters showed any significant differences between the SC and the IC groups. The 2 h-EC rats showed an increase in both quiet sleep and active sleep time during the experimental period, whereas the controls showed the expected decline. Morphological investigations at 3 months of age revealed a significant weight increase in the cerebral cortex, and even more so in the hypothalamus as compared with the control group in the 2 h-EC rats.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0006-8993
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
11
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pubmed:volume |
233
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
287-98
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pubmed:dateRevised |
2003-11-14
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pubmed:meshHeading |
pubmed-meshheading:7059812-Aging,
pubmed-meshheading:7059812-Animals,
pubmed-meshheading:7059812-Brain,
pubmed-meshheading:7059812-Cerebral Cortex,
pubmed-meshheading:7059812-DNA,
pubmed-meshheading:7059812-Male,
pubmed-meshheading:7059812-Rats,
pubmed-meshheading:7059812-Rats, Inbred Strains,
pubmed-meshheading:7059812-Sleep Stages,
pubmed-meshheading:7059812-Social Environment,
pubmed-meshheading:7059812-Social Isolation
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pubmed:year |
1982
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pubmed:articleTitle |
Sleep patterns during rearing under different environmental conditions in juvenile rats.
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pubmed:publicationType |
Journal Article
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