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The Neural Correlates of Mental Rotation Abilities in Cannabis-Abusing Patients with Schizophrenia : An fMRI Study
Joint Authors
Lipp, Olivier
Lalonde, Pierre
Bourque, Josiane
Stip, Emmanuel
Mendrek, Adrianna
Durand, Myriam
Grignon, Sylvain
Potvin, Stéphane
Source
Schizophrenia Research and Treatment
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-07-17
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Growing evidence suggests that cannabis abuse/dependence is paradoxically associated with better cognition in schizophrenia.
Accordingly, we performed a functional magnetic resonance imaging (fMRI) study of visuospatial abilities in 14 schizophrenia patients with cannabis abuse (DD), 14 nonabusing schizophrenia patients (SCZ), and 21 healthy controls (HCs).
Participants performed a mental rotation task while being scanned.
There were no significant differences in the number of mistakes between schizophrenia groups, and both made more mistakes on the mental rotation task than HC.
Relative to HC, SCZ had increased activations in the left thalamus, while DD patients had increased activations in the right supramarginal gyrus.
In both cases, hyper-activations are likely to reflect compensatory efforts.
In addition, SCZ patients had decreased activations in the left superior parietal gyrus compared to both HC and DD patients.
This latter result tentatively suggests that the neurophysiologic processes underlying visuospatial abilities are partially preserved in DD, relative to SCZ patients, consistently with the findings showing that cannabis abuse in schizophrenia is associated with better cognitive functioning.
Further fMRI studies are required to examine the neural correlates of other cognitive dysfunctions in schizophrenia patients with and without comorbid cannabis use disorder.
American Psychological Association (APA)
Potvin, Stéphane& Bourque, Josiane& Durand, Myriam& Lipp, Olivier& Lalonde, Pierre& Stip, Emmanuel…[et al.]. 2013. The Neural Correlates of Mental Rotation Abilities in Cannabis-Abusing Patients with Schizophrenia : An fMRI Study. Schizophrenia Research and Treatment،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-480239
Modern Language Association (MLA)
Potvin, Stéphane…[et al.]. The Neural Correlates of Mental Rotation Abilities in Cannabis-Abusing Patients with Schizophrenia : An fMRI Study. Schizophrenia Research and Treatment No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-480239
American Medical Association (AMA)
Potvin, Stéphane& Bourque, Josiane& Durand, Myriam& Lipp, Olivier& Lalonde, Pierre& Stip, Emmanuel…[et al.]. The Neural Correlates of Mental Rotation Abilities in Cannabis-Abusing Patients with Schizophrenia : An fMRI Study. Schizophrenia Research and Treatment. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-480239
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-480239