Environmental enrichment decreases responding for visual novelty

Mary E. Cain, Thomas Green, Michael T. Bardo

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Previous research has demonstrated that rats reared in an enriched condition (EC) with novel objects and social partners self-administer less amphetamine compared to rats raised in an isolated condition (IC). However, it is unclear if the enrichment-induced decrease in stimulant self-administration generalizes to non-drug rewards such as those provided by novel environmental stimuli. In the current study, EC, IC, and social condition (SC) rats were raised from 21 to 51 days of age before being tested in a two-lever operant conditioning chamber in which responding on one lever (active lever) resulted in illumination of a cue light. In Experiment 1, rats were initially assessed for baseline responding (no contingency) and then the contingent light was introduced. EC rats responded less than IC rats for the contingent light stimulus; however, EC rats also displayed a lower rate of baseline responding. In Experiment 2, rats were trained initially to lever press for a sucrose reward to decrease differences in baseline responding. While sucrose pretraining decreased baseline response differences between groups, EC rats still responded less for the contingent light stimulus than IC or SC rats. These results suggest that environmental enrichment decreases the incentive value of visual novelty.

Original languageEnglish (US)
Pages (from-to)360-366
Number of pages7
JournalBehavioural Processes
Volume73
Issue number3
DOIs
StatePublished - Nov 1 2006
Externally publishedYes

Fingerprint

environmental enrichment
rats
sucrose
Light
conditioning
Social Conditions
incentive
Reward
experiment
Sucrose
operant conditioning
Operant Conditioning
amphetamine
Self Administration
Amphetamine
Lighting
Cues
lighting
Motivation
social condition

Keywords

  • Enrichment
  • Impoverished
  • Light
  • Novelty
  • Operant

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Ecology, Evolution, Behavior and Systematics
  • Behavioral Neuroscience

Cite this

Environmental enrichment decreases responding for visual novelty. / Cain, Mary E.; Green, Thomas; Bardo, Michael T.

In: Behavioural Processes, Vol. 73, No. 3, 01.11.2006, p. 360-366.

Research output: Contribution to journalArticle

Cain, Mary E. ; Green, Thomas ; Bardo, Michael T. / Environmental enrichment decreases responding for visual novelty. In: Behavioural Processes. 2006 ; Vol. 73, No. 3. pp. 360-366.
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