Evidence map›Paper›PMID 32862560›Full record

ArticleBrain and behavior2020

FMRI activation to cannabis odor cues is altered in individuals at risk for a cannabis use disorder.

Natalia M Kleinhans, Julia Sweigert, Matthew Blake, Bradley Douglass, Braden Doane, Fredrick Reitz, Mary Larimer

Abstract read
In one paragraph

Article in Brain and behavior, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

10 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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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.

Natalia M KleinhansDepartment of Radiology, University of Washington, Seattle, WA, USA.ORCID 0000-0003-4417-4224
Julia SweigertDepartment of Radiology, University of Washington, Seattle, WA, USA.
Matthew BlakeDepartment of Radiology, University of Washington, Seattle, WA, USA.
Bradley DouglassThe Werc Shop, Bellevue, WA, USA.
Braden DoaneThe Werc Shop, Bellevue, WA, USA.
Fredrick ReitzCenter on Human Development and Disability, University of Washington, Seattle, WA, USA.
Mary LarimerDepartment of Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA, USA.

Funding

Mechanisms of Brain Dysmorphology in MN1 C-Terminal Truncation Syndrome, a Novel Intellectual Developmental Disability Disorder P50HD103524 · NICHD · UNIVERSITY OF WASHINGTON · PI DANIEL DOHERTY · 2020 to 2026
$9.9M
Jason KilmerNICHD NIH HHS P50 HD103524The Washington State Dedicated Marijuana Fund
6 · The paper itself

Abstract

introductionThe smell of cannabis is a cue with universal relevance to cannabis users. However, most cue reactivity imaging studies have solely utilized visual images, auditory imagery scripts, or tactile cues in their experiments. This study introduces a multimodal cue reactivity paradigm that includes picture, odor, and bimodal picture + odor cues.

methodsTwenty-eight adults at risk for cannabis use disorder (CUD; defined as at least weekly use and Substance Involvement Score of ≥4 on the Cannabis sub-test of the Alcohol, Smoking and Substance Involvement Screening Test) and 26 cannabis-naive controls were exposed to cannabis and floral cues during event-related fMRI. Between-group differences in fMRI activation and correlations were tested using FMRIB's Local Analyses of Mixed Effects and corrected for multiple comparisons using a voxelwise threshold of z > 2.3 and a corrected cluster threshold of p < .05.

resultsBoth visual and olfactory modalities resulted in significant activation of craving and reward systems, with cannabis odor cues eliciting a significantly greater response in regions mediating anticipation and reward (nucleus accumbens, pallidum, putamen, and anterior insular cortex, supplementary motor area, angular gyrus and superior frontal gyrus) and cannabis picture cues eliciting a significantly greater response in the occipital cortex and amygdala. Furthermore, the CUD group showed significantly increased activation in the ventral tegmental area (VTA), the insula, and the pallidum compared to controls. Within the CUD group, activation in the insula, anterior cingulate, and occipital cortex to bimodal cannabis cues was significantly correlated with self-reported craving.

conclusionOur multimodal cue reactivity paradigm is sensitive to neural adaptations associated with problematic cannabis use.

Indexed as

CannabisMarijuana AbuseAdultBrainCuesHumansMagnetic Resonance ImagingOdorantsaddictioncannabis cuescravingcue reactivitymarijuananeuroimagingreward

Identifiers

PMID32862560
PMCPMC7559640

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LicenceCC BY
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Registered trials

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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.