Evidence map›Paper›PMID 17637608›Full record

ArticleNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2008

Cannabis use disrupts eyeblink conditioning: evidence for cannabinoid modulation of cerebellar-dependent learning.

Patrick D Skosnik, Chad R Edwards, Brian F O'Donnell, Ashley Steffen, Joseph E Steinmetz, William P Hetrick

Open access · bronzeAbstract readControlled Clinical Trial
In one paragraph

Article in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 1 pooled it
4.6field-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

38 citing papers in PubMed, 1 synthesis or guideline pooled it, 78 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
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  5. Article
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  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. New vistas on cannabis use disorder.Neuropharmacology · 2017
    Review
  15. Article
  16. Review
  17. Cannabinoids and Tremor Induced by Motor-related Disorders: Friend or Foe?Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2015
    Review
  18. Review
  19. Article
  20. 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

6 authors at 2 institutions in 1 country.

Patrick D SkosnikDepartment of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47405, USA. pskosnik@indiana.edu
Chad R Edwards
Brian F O'Donnell
Ashley Steffen
Joseph E Steinmetz
William P Hetrick
Indiana University Bloomington · USUniversity of Kansas · US

Funding

The Effect of Cannabis Use on Human Cerebellar FunctionR21DA023097 · NIDA · TRUSTEES OF INDIANA UNIVERSITY · PI NEWMAN, SHARLENE D · 2007 to 2008
$384k
Sensory Processing Deficits in Cannabis UseR03DA019630 · NIDA · TRUSTEES OF INDIANA UNIVERSITY · PI SKOSNIK, PATRICK DAVID · 2005 to 2006
$150k
NIDA NIH HHS 1 R03 DA019630-01NIDA NIH HHS R03 DA019630NIDA NIH HHS R21 DA023097
6 · The paper itself

Abstract

While the cerebellum contains the highest density of cannabinoid receptor (CB1) in the brain, no studies have assessed the effect of exogenous cannabinoids on cerebellar-dependent learning in humans. The current study, therefore, examined the effect of chronic cannabis use on classical eyeblink conditioning (EBC), a cerebellar-mediated task which has been shown to be disrupted in CB1 knockout mice. Chronic cannabis users (24 h abstinence before study; positive THC urine drug test) free of DSM-IV Axis-I or -II disorders, were evaluated. A delay EBC task was utilized, in which a conditioned stimulus (CS; 400 ms tone) co-terminated with a corneal air puff unconditioned stimulus (US; 50 ms), thus eliciting a conditioned blink response (CR). The cannabis group exhibited markedly fewer, and more poorly timed CRs as compared to drug-naive controls. There were no differences between the groups in either the unconditioned response (UR) or an EEG measure of selective attention to the CS (N100 auditory ERP), indicating that the disruption observed in the cannabis group was specific to CR acquisition. These results suggest that cannabis use is associated with functional deficits in the cerebellar circuitry underlying EBC, a finding which corroborates the recent work in CB1 knockout mice.

Indexed as

AdolescentAdultAnalysis of VarianceAssociation LearningCannabinoidsCerebellumConditioning, EyelidElectroencephalographyEvoked Potentials, VisualFemaleHumansMaleMarijuana AbusePhotic StimulationSpectrum AnalysisSurveys and QuestionnairesCannabinoids

Identifiers

PMID17637608
PMCPMC2871697
OpenAlexW2090096378

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.