Cited by 119Functional Brain Connectivity StudiesPosttraumatic Stress Disorder ResearchTraumatic Brain Injury Research

The cerebellum after trauma: Resting‐state functional connectivity of the cerebellum in posttraumatic stress disorder and its dissociative subtype

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Rabellino, Daniela, Densmore, Maria, Théberge, Jean, McKinnon, Margaret C., Lanius, Ruth A.·2018·Human Brain Mapping

Abstract

The cerebellum plays a key role not only in motor function but also in affect and cognition. Although several psychopathological disorders have been associated with overall cerebellar dysfunction, it remains unclear whether different regions of the cerebellum contribute uniquely to psychopathology. Accordingly, we compared seed‐based resting‐state functional connectivity of the anterior cerebellum (lobule IV–V), of the posterior cerebellum (Crus I), and of the anterior vermis across posttraumatic stress disorder (PTSD; n = 65), its dissociative subtype (PTSD + DS; n = 37), and non‐trauma‐exposed healthy controls (HC; n = 47). Here, we observed decreased functional connectivity of the anterior cerebellum and anterior vermis with brain regions involved in somatosensory processing, multisensory integration, and bodily self‐consciousness (temporo‐parietal junction, postcentral gyrus, and superior parietal lobule) in PTSD + DS as compared to PTSD and HC. Moreover, the PTSD + DS group showed increased functional connectivity of the posterior cerebellum with cortical areas related to emotion regulation (ventromedial prefrontal and orbito‐frontal cortex, subgenual anterior cingulum) as compared to PTSD. By contrast, PTSD showed increased functional connectivity of the anterior cerebellum with cortical areas associated with visual processing (fusiform gyrus), interoceptive awareness (posterior insula), memory retrieval, and contextual processing (hippocampus) as compared to HC. Finally, we observed decreased functional connectivity between the posterior cerebellum and prefrontal regions involved in emotion regulation, in PTSD as compared to HC. These findings not only highlight the crucial role of each cerebellar region examined in the psychopathology of PTSD but also reveal unique alterations in functional connectivity distinguishing the dissociative subtype of PTSD versus PTSD.

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Crossref · 10.1002/hbm.24081

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Authors
Rabellino, D., Densmore, M., Théberge, J., McKinnon, M. C., & Lanius, R. A.
Affiliations
Western University (CA)
Corresponding author
Lanius, Ruth A.
Venue
Human Brain Mapping
Publisher
Wiley
Published
2018-04-17
Volume
39
Issue
8
Pages
3354-3374
ISSN
  • 1065-9471 (ISSN-L)
  • 1097-0193
OpenAlex
W2799522310
Cited by
119
References
21
Citations by year
2026: 7 · 2025: 11 · 2024: 11 · 2023: 25 · 2022: 23 · 2021: 11 · 2020: 14 · 2019: 12 · 2018: 5
FWCI
6.25
Type
journal article
Language
en
Open access
Locations
  • Human Brain Mapping (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Canadian Institutes of Health Research (137150, 148784)
  • Mitacs
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Social Sciences › Psychology › Clinical Psychology › Posttraumatic Stress Disorder Research
  • Health Sciences › Medicine › Epidemiology › Traumatic Brain Injury Research
Keywords
cerebellum, post-traumatic stress disorder, dissociative subtype of PTSD, resting-state functional connectivity, anterior cerebellum, posterior cerebellum, somatosensory processing, multisensory integration, bodily self-consciousness, emotion regulation, ventromedial prefrontal cortex, orbitofrontal cortex, subgenual anterior cingulate cortex, interoceptive awareness, hippocampus, fusiform gyrus, posterior insula
MeSH terms
Adult, Brain Mapping, Cerebellum, Dissociative Disorders, Female, Humans, Magnetic Resonance Imaging, Male, Neural Pathways, Rest, Stress Disorders, Post-Traumatic

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