An fMRI study of visuo-vestibular interaction in Vestibular Neuritis
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Published version
Author(s)
Type
Journal Article
Abstract
Vestibular neuritis (VN) is characterised by acute vertigo due to a sudden loss of unilateral vestibular function. A considerable proportion of VN patients proceed to develop chronic symptoms of dizziness, including visually induced dizziness, specifically during head turns. Here we investigated whether the development of such poor clinical outcomes following VN, is associated with abnormal visuo-vestibular cortical processing. Accordingly, we applied functional magnetic resonance imaging to assess brain responses of chronic VN patients and compared these to controls during both congruent (co-directional) and incongruent (opposite directions) visuo-vestibular stimulation (i.e. emulating situations that provoke symptoms in patients). We observed a focal significant difference in BOLD signal in the primary visual cortex V1 between patients and controls in the congruent condition (small volume corrected level of p < .05 FWE). Importantly, this reduced BOLD signal in V1 was negatively correlated with functional status measured with validated clinical questionnaires. Our findings suggest that central compensation and in turn clinical outcomes in VN are partly mediated by adaptive mechanisms associated with the early visual cortex.
Date Issued
2018-10-09
Date Acceptance
2018-10-09
Citation
NeuroImage: Clinical, 2018, 20, pp.1010-1017
ISSN
2213-1582
Publisher
Elsevier
Start Page
1010
End Page
1017
Journal / Book Title
NeuroImage: Clinical
Volume
20
Copyright Statement
© 2018 Published by Elsevier Inc. This is an open access article under the CC BY-NC-ND license
(http://creativecommons.org/licenses/BY-NC-ND/4.0/)
(http://creativecommons.org/licenses/BY-NC-ND/4.0/)
Subjects
Science & Technology
Life Sciences & Biomedicine
Neuroimaging
Neurosciences & Neurology
fMRI
Visual-cortex
Oscillopsia
Vertigo
Vestibular compensation
Vestibular neuritis
TOP-DOWN MODULATION
COMPENSATION
STIMULATION
MOTION
CORTEX
CONSEQUENCES
DYSFUNCTION
PREDICTORS
NEURONITIS
DOMINANCE
Publication Status
Published
Date Publish Online
2018-10-09