Evidence map›Paper›PMID 25925779›Full record

ArticlePsychopharmacology2015

Persistent effects of chronic Δ9-THC exposure on motor impulsivity in rats.

Cristina Irimia, Ilham Y Polis, David Stouffer, Loren H Parsons

Abstract read
PubMed Publisher
In one paragraph

Article in Psychopharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
3.7field-weighted citation impact, top 8% 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

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 46 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. The Effects of THC and Nicotine on Attention: A Narrative Review.Current topics in behavioral neurosciences · 2025
    Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Effects of Δ9-Tetrahydrocannibinol (THC) on Obesity at Different Stages of Life: A Literature Review.International journal of environmental research and public health · 2022
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Review
  17. Article
  18. Review
  19. Lasting effects of repeated ∆British journal of pharmacology · 2020
    Article
  20. Voluntary oral consumption of ΔNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2019
    Article
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

4 authors at 1 institution in 1 country.

Cristina IrimiaCommittee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, SP30-2001, 10550 N. Torrey Pines Road, La Jolla, CA, 92037, USA.
Ilham Y Polis
David Stouffer
Loren H Parsons
Scripps Research Institute · US

Funding

TRANSLATIONAL CTR ON THE CLINICAL NEUROBIOL OF CANNABIS ADDICTIONP20DA024194 · NIDA · SCRIPPS RESEARCH INSTITUTE, THE · PI MASON, BARBARA J · 2007 to 2010
$3.8M
Cognitive Function in Alcohol Dependence and Protracted WithdrawalR01AA022249 · NIAAA · SCRIPPS RESEARCH INSTITUTE, THE · PI MARTIN-FARDON, REMI · 2013 to 2017
$2.5M
NIAAA NIH HHS R01 AA022249-01S1NIDA NIH HHS P20 DA024194
6 · The paper itself

Abstract

rationaleIn humans, long-term marijuana use is associated with impaired impulse control and attentional capacity, though it has been difficult to distinguish pre-existing cognitive deficits from possible consequences of prolonged marijuana exposure.

objectiveTo evaluate the effects of long-term exposure to Δ9-Tetrahydrocannabinol (Δ9-THC), the primary psychoactive constituent in marijuana, on indices of impulse control and attentional capacity using the rat 5-Choice Serial Reaction Time Task (5-CSRTT).

methodsTen 14-day cycles of Δ9-THC dosing and 5-CSRTT testing were employed, each comprised of 5-day Δ9-THC dosing (0.3 or 3 mg/kg b.i.d.) and 5-CSRTT testing during the 9 days of drug abstinence. Subsequent 5-CSRTT testing continued during 5 weeks of protracted abstinence.

resultsDose-dependent increases in motor impulsivity (premature responses) and behavioral disinhibition (perseverative responses) emerged following 5 cycles of Δ9-THC exposure that persisted for the remaining dosing and testing cycles. Δ9-THC-related disruptions in motor impulsivity and behavioral inhibition were most pronounced during cognitively challenging 5-CSRTT sessions incorporating varying novel inter-trial intervals (ITIs), and these disruptions persisted for at least 5 weeks of Δ9-THC abstinence. Δ9-THC-related impairments in attentional capacity (response accuracy) were also evident during variable ITI challenge tests, though these attentional disruptions abated within 3 weeks of Δ9-THC abstinence.

conclusionsThese observations demonstrate that long-term intermittent exposure to clinically meaningful Δ9-THC doses induces persistent impairments in impulse control and attentional function. If present in humans, these disruptions may impact academic and professional performance.

Indexed as

AnimalsAttentionCannabinoid Receptor AgonistsChoice BehaviorDose-Response Relationship, DrugDronabinolImpulsive BehaviorInhibition, PsychologicalMaleMotor ActivityRatsRats, WistarReaction TimeCannabinoid Receptor AgonistsDronabinol

Identifiers

PMID25925779
OpenAlexW2006040221

What OpenQuestion holds

Textmetadata
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.