Evidence map›Paper›PMID 32206828›Full record

ArticlePsychopharmacology2020

Intermittent access cocaine self-administration produces psychomotor sensitization: effects of withdrawal, sex and cross-sensitization.

Crystal C Carr, Carrie R Ferrario, Terry E Robinson

Open access · greenAbstract read
In one paragraph

Article in Psychopharmacology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
3.5field-weighted citation impact, top 6% 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

23 citing papers in PubMed, 46 citations in OpenAlex.

  1. Article
  2. Incentive salience, not psychomotor sensitization or tolerance, drives escalation of cocaine self-administration in heterogeneous stock rats.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
    Article
  3. Escalation of cocaine consumption: tolerance versus sensitization of incentive salience.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
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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

3 authors at 1 institution in 1 country.

Crystal C CarrDepartment of Psychology (Biopsychology Program), University of Michigan, 530 Church Street, East Hall, Ann Arbor, MI, 48109, USA.
Carrie R FerrarioDepartment of Pharmacology, University of Michigan Medical School, Ann Arbor, MI, USA.
Terry E RobinsonDepartment of Psychology (Biopsychology Program), University of Michigan, 530 Church Street, East Hall, Ann Arbor, MI, 48109, USA. ter@umich.edu.
University of Michigan–Ann Arbor · US

Funding

NIDA Training Program in Neuroscience-Administrative SupplementT32DA007281 · NIDA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI Shelly Beth Flagel · 1995 to 2026
$5.7M
Animal Models of AddictionR01DA044204 · NIDA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI FERRARIO, CARRIE · 2019 to 2023
$2.4M
Exploring the link between reactive oxygen species and CP-AMPAR up-regulation in addictionR21DA045277 · NIDA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI FERRARIO, CARRIE · 2018 to 2019
$381k
NIDA NIH HHS R01 DA044204NIDA NIH HHS R21 DA045277NIDA NIH HHS R21DA045277NIDA NIH HHS RO1DA044204NIDA NIH HHS T32 DA007281
6 · The paper itself

Abstract

rationaleWith repeated administration, the psychomotor activating effects of drugs such as cocaine or amphetamine can change in very different ways-showing sensitization or tolerance-depending on whether they are administered more or less intermittently. This behavioral plasticity is thought to reflect, at least in part, changes in dopamine (DA) neurotransmission, and therefore, may provide insights into the development of substance use disorders. Indeed, the most widely used preclinical model of cocaine addiction, which involves Long Access (LgA) self-administration procedures, is reported to produce tolerance to cocaine's psychomotor activating effects and effects on DA activity. In contrast, Intermittent Access (IntA) cocaine self-administration is more effective than LgA in producing addiction-like behavior, but sensitizes DA neurotransmission. There is, however, very little information concerning the effects of IntA experience on the psychomotor activating effects of cocaine.

objectiveThe objective of this study was to determine whether IntA experience produces psychomotor sensitization with similar characteristics to that produced by the intermittent, noncontingent administration of cocaine.

resultsIntA to cocaine did indeed produce psychomotor sensitization that (1) was greater after a long (30 days) vs. short (1 day) period of withdrawal, (2) was greater in females than males, and (3) resulted in cross-sensitization to another psychomotor stimulant drug, amphetamine.

conclusionThe tolerance sometimes associated with LgA cocaine self-administration has been cited in support of the idea that, in addiction, drug-seeking and drug-taking is motivated to overcome a DA deficiency and associated anhedonia. In contrast, the neurobehavioral sensitization associated with IntA cocaine self-administration favors an incentive-sensitization view.

Indexed as

Administration, IntravenousAnimalsBehavior, AddictiveCentral Nervous System StimulantsCocaineCocaine-Related DisordersDopamine Uptake InhibitorsDose-Response Relationship, DrugFemaleMaleMotivationPsychomotor PerformanceRatsRats, Sprague-DawleySelf AdministrationSex FactorsCentral Nervous System StimulantsCocaineDopamine Uptake InhibitorsAddictionBehavioral sensitizationCocaineCross-sensitizationIntermittent accessPsychomotor activationSex differencesStereotypyWithdrawal

Identifiers

PMID32206828
PMCPMC7244391
OpenAlexW3012880995

What OpenQuestion holds

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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.