Suppression of lever-pressing behavior in rats reared in differentially enriched environment

Autor:	Keiichi Mitani
Rok vydání:	1993
Předmět:	Environmental enrichment Animal science digestive oral and skin physiology Lever pressing Stimulating environment Conditioned Suppression Biology General Psychology Developmental psychology
Zdroj:	Japanese Psychological Research. 35:119-128
ISSN:	1468-5884 0021-5368
DOI:	10.4992/psycholres1954.35.119
Popis:	In order to elucidate the suppression mechanism of lever pressing or getting fewer food pellets by rats, reared in an enriched environment in comparison with those reared in an impoverished environment, three experiments were carried out, using Fisher 344 rats. In Experiment I, differential rearing was introduced early in life (75 days, 30 through 105 days after birth), while in Experiment II it was introduced rather late (160 days, 110 through 270 days after birth), and Experiment III it was introduced at the lates (322 days, 245 through 567 after birth). In all three experiments, the suppression of lever pressing was observed. In Experiment I, the real lever-pressing rime is shorter for rats reared in an impoverished environment
Databáze:	OpenAIRE
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