Evidence map›Paper›PMID 29765102›Full record

ArticleScientific reports2018

The effects of cannabidiol on impulsivity and memory during abstinence in cigarette dependent smokers.

C Hindocha, T P Freeman, M Grabski, H Crudgington, A C Davies, J B Stroud, R K Das, W Lawn, C J A Morgan, H V Curran

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06218056 (Evaluating the Efficacy of Cannabidiol for Reducing Cigarette Use), which is not on this map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
3.2field-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.

NCT06218056 phase2recruitingnot on this mapstarted 2024, after this paper: background citation

Evaluating the Efficacy of Cannabidiol for Reducing Cigarette Use

TypeinterventionalSponsorUniversity of California, Los AngelesRan2024 to 2026Enrolled120ConditionsTobacco Use Disorder, Tobacco Smoking, Tobacco DependenceArmsCannabidiol (CBD) 800 mg, Placebo
3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 39 citations in OpenAlex.

  1. Does acute cannabidiol (CBD) use impair performance? A meta-analysis and comparison with placebo and delta-9-tetrahydrocannabinol (THC).Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2024
    Pooled it
  2. Trial
  3. Article
  4. Article
  5. Review
  6. THC and CBD: Villain versus Hero? Insights into Adolescent Exposure.International journal of molecular sciences · 2023
    Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Review
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  17. Article
  18. Vapor inhalation of cannabidiol (CBD) in rats.Pharmacology, biochemistry, and behavior · 2019
    Article
  19. Review
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

10 authors at 4 institutions in 1 country.

C HindochaClinical Psychopharmacology Unit, University College London, WC1E 7HB, London, United Kingdom. c.hindocha@ucl.ac.uk.ORCID 0000-0003-1692-7401
T P FreemanClinical Psychopharmacology Unit, University College London, WC1E 7HB, London, United Kingdom.
M GrabskiClinical Psychopharmacology Unit, University College London, WC1E 7HB, London, United Kingdom.
H CrudgingtonClinical Psychopharmacology Unit, University College London, WC1E 7HB, London, United Kingdom.
A C DaviesClinical Psychopharmacology Unit, University College London, WC1E 7HB, London, United Kingdom.
J B Stroud
R K DasClinical Psychopharmacology Unit, University College London, WC1E 7HB, London, United Kingdom.
W LawnClinical Psychopharmacology Unit, University College London, WC1E 7HB, London, United Kingdom.
C J A MorganClinical Psychopharmacology Unit, University College London, WC1E 7HB, London, United Kingdom.
H V CurranClinical Psychopharmacology Unit, University College London, WC1E 7HB, London, United Kingdom.
University College London · GBKing's College London · GBUniversity of Bristol · GBUniversity of Exeter · GB

Funding

Medical Research Council MR/K015524/1
6 · The paper itself

Abstract

Acute nicotine abstinence in cigarette smokers results in deficits in performance on specific cognitive processes, including working memory and impulsivity which are important in relapse. Cannabidiol (CBD), the non-intoxicating cannabinoid found in cannabis, has shown pro-cognitive effects and preliminary evidence has indicated it can reduce the number of cigarettes smoked in dependent smokers. However, the effects of CBD on cognition have never been tested during acute nicotine withdrawal. The present study therefore aimed to investigate if CBD can improve memory and reduce impulsivity during acute tobacco abstinence. Thirty, non-treatment seeking, dependent, cigarette smokers attended two laboratory-based sessions after overnight abstinence, in which they received either 800 mg oral CBD or placebo (PBO), in a randomised order. Abstinence was biologically verified. Participants were assessed on go/no-go, delay discounting, prose recall and N-back (0-back, 1-back, 2-back) tasks. The effects of CBD on delay discounting, prose recall and the N-back (correct responses, maintenance or manipulation) were null, confirmed by a Bayesian analysis, which found evidence for the null hypothesis. Contrary to our predictions, CBD increased commission errors on the go/no-go task. In conclusion, a single 800 mg dose of CBD does not improve verbal or spatial working memory, or impulsivity during tobacco abstinence.

Indexed as

AdultBayes TheoremCannabidiolFemaleHumansImpulsive BehaviorMaleMemoryMemory, Short-TermRandom AllocationSpatial MemoryTobacco Use DisorderYoung AdultCannabidiol

Identifiers

PMID29765102
PMCPMC5954148
OpenAlexW2804098521

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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.