Evidence map›Paper›PMID 19584714›Full record

ArticleBehavioural pharmacology2009

Effects of environmental enrichment on sensitivity to cocaine in female rats: importance of control rates of behavior.

Mark A Smith, Jordan C Iordanou, Marika B Cohen, Kathryn T Cole, Samantha R Gergans, Megan A Lyle, Karl T Schmidt

Open access · greenAbstract read
In one paragraph

Article in Behavioural pharmacology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 20% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 51 citations in OpenAlex.

  1. Pooled it
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  11. Inoculation stress hypothesis of environmental enrichment.Neuroscience and biobehavioral reviews · 2015
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Mark A SmithDepartment of Psychology, Davidson College, Davidson, North Carolina 28035-7037, USA. masmith@davidson.edu
Jordan C Iordanou
Marika B Cohen
Kathryn T Cole
Samantha R Gergans
Megan A Lyle
Karl T Schmidt
Davidson College · US

Funding

Social &Environmental Influences on Opioid SensitivityR15DA014255 · NIDA · DAVIDSON COLLEGE · PI SMITH, MARK A · 2002 to 2009
$399k
Howard Hughes Medical Institute 52006292NIDA NIH HHS DA14255NIDA NIH HHS R15 DA014255
6 · The paper itself

Abstract

Environmental enrichment produces functional changes in mesolimbic dopamine transmission and alters sensitivity to psychomotor stimulants. These manipulations also alter the control rate of many behaviors that are sensitive to stimulant administration, which can make comparison of drug effects between isolated and enriched subjects difficult. The purpose of this study was to examine the effects of environmental enrichment on control rates of behavior and on sensitivity to cocaine in tests of locomotor activity, drug self-administration, conditioned place preference, and toxicity. In the locomotor activity test, isolated rats exhibited greater activity after the administration of cocaine, but also had higher control rates of activity. When locomotor activity was expressed as a percentage of saline control values, enriched rats exhibited a greater increase relative to their own control than isolated rats. In the drug self-administration procedure, isolated rats had higher breakpoints on a progressive-ratio schedule of reinforcement when responding was maintained by cocaine; however, isolated rats also had higher breakpoints in saline substitution tests and higher rates of inactive lever responding. When the self-administration data were expressed as a percentage of these control values, enriched rats exhibited a greater increase in responding relative to their own control rates than isolated rats. No differences were observed between isolated and enriched rats under control conditions in the place preference and toxicity studies. In both of these procedures, enriched rats were more sensitive than isolated rats to all the doses of cocaine tested. These data emphasize the importance of considering control rates of behavior in studies examining environmental enrichment and drug sensitivity, and suggest that environmental enrichment increases sensitivity to cocaine across a range of dependent measures when differences in control rates of behavior are taken into account.

Indexed as

Social EnvironmentSocial IsolationAnimalsBehavior, AnimalCocaineFemaleMotor ActivityNarcoticsRatsRats, Long-EvansSelf AdministrationCocaineNarcotics

Identifiers

PMID19584714
PMCPMC2741423
OpenAlexW2012062242

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.