Wurthmann S, Naegel S, Schulte Steinberg B, Theysohn N, Diener HC, Kleinschnitz C, Obermann M, Holle D. Cerebral gray matter changes in persistent postural perceptual dizziness.
J Psychosom Res 2017;
103:95-101. [PMID:
29167054 DOI:
10.1016/j.jpsychores.2017.10.007]
[Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 10/12/2017] [Accepted: 10/13/2017] [Indexed: 01/29/2023]
Abstract
BACKGROUND
Persistent postural perceptual dizziness (PPPD) is the most common vestibular syndrome in middle-aged patients. Multisensory maladjustment involving alterations of sensory response pattern including vestibular, visual and motion stimuli is thought to be a key pathophysiological correlate of this disorder.
OBJECTIVE
We aimed to identify regional gray matter changes in PPPD patients that might be involved in the underlying pathophysiology of this disorder.
METHODS
42 PPPD patients and healthy age and gender matched controls were investigated using magnetic resonance imaging-based voxel-based morphometry. All patients fulfilled the current diagnostic criteria for PPPD, established by the Bárány-Society based on previous criteria for chronic subjective dizziness and phobic postural vertigo.
RESULTS
PPPD patients showed gray matter volume decrease in the temporal cortex, cingulate cortex, precentral gyrus, hippocampus, dorsolateral prefrontal cortex, caudate nucleus and the cerebellum. A negative correlation of disease duration and gray matter volume was observed in the visual cortex, supplementary motor area and somatosensory processing structures.
CONCLUSIONS
In patients with PPPD areas involved in multisensory vestibular processing show gray matter volume decrease. These brain regions resemble those previously described for other vestibular disorders. Longer duration of disease leads to a more pronounced gray matter alteration, which might represent maladaptive mechanisms within the course of disease.
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