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

INTRODUCTION: The 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 in...

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Autores principales: Kleinhans, Natalia M., Sweigert, Julia, Blake, Matthew, Douglass, Bradley, Doane, Braden, Reitz, Fredrick, Larimer, Mary
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7559640/
https://www.ncbi.nlm.nih.gov/pubmed/32862560
http://dx.doi.org/10.1002/brb3.1764
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author Kleinhans, Natalia M.
Sweigert, Julia
Blake, Matthew
Douglass, Bradley
Doane, Braden
Reitz, Fredrick
Larimer, Mary
author_facet Kleinhans, Natalia M.
Sweigert, Julia
Blake, Matthew
Douglass, Bradley
Doane, Braden
Reitz, Fredrick
Larimer, Mary
author_sort Kleinhans, Natalia M.
collection PubMed
description INTRODUCTION: The 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. METHODS: Twenty‐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. RESULTS: Both 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. CONCLUSION: Our multimodal cue reactivity paradigm is sensitive to neural adaptations associated with problematic cannabis use.
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spelling pubmed-75596402020-10-20 FMRI activation to cannabis odor cues is altered in individuals at risk for a cannabis use disorder Kleinhans, Natalia M. Sweigert, Julia Blake, Matthew Douglass, Bradley Doane, Braden Reitz, Fredrick Larimer, Mary Brain Behav Original Research INTRODUCTION: The 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. METHODS: Twenty‐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. RESULTS: Both 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. CONCLUSION: Our multimodal cue reactivity paradigm is sensitive to neural adaptations associated with problematic cannabis use. John Wiley and Sons Inc. 2020-08-30 /pmc/articles/PMC7559640/ /pubmed/32862560 http://dx.doi.org/10.1002/brb3.1764 Text en © 2020 The Authors. Brain and Behavior published by Wiley Periodicals LLC This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Kleinhans, Natalia M.
Sweigert, Julia
Blake, Matthew
Douglass, Bradley
Doane, Braden
Reitz, Fredrick
Larimer, Mary
FMRI activation to cannabis odor cues is altered in individuals at risk for a cannabis use disorder
title FMRI activation to cannabis odor cues is altered in individuals at risk for a cannabis use disorder
title_full FMRI activation to cannabis odor cues is altered in individuals at risk for a cannabis use disorder
title_fullStr FMRI activation to cannabis odor cues is altered in individuals at risk for a cannabis use disorder
title_full_unstemmed FMRI activation to cannabis odor cues is altered in individuals at risk for a cannabis use disorder
title_short FMRI activation to cannabis odor cues is altered in individuals at risk for a cannabis use disorder
title_sort fmri activation to cannabis odor cues is altered in individuals at risk for a cannabis use disorder
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7559640/
https://www.ncbi.nlm.nih.gov/pubmed/32862560
http://dx.doi.org/10.1002/brb3.1764
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