Title
Sensorimotor incongruence exacerbates symptoms in patients with chronic whiplash associated disorders : an experimental studySensorimotor incongruence exacerbates symptoms in patients with chronic whiplash associated disorders : an experimental study
Author
Faculty/Department
Faculty of Medicine and Health Sciences
Research group
Translational Neurosciences (TNW)
Faculteit Geneeskunde
Publication type
article
Publication
London,
Subject
Human medicine
Source (journal)
Rheumatology. - London, 1999, currens
Volume/pages
51(2012):8, p. 1492-1499
ISSN
1462-0324
ISI
000306684600021
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Objectives. Incongruence between sensory feedback and motor output may serve as an ongoing source of nociception inside the CNS, and hence may contribute to the development of chronic whiplash associated disorder (WAD). It has been demonstrated that sensorimotor incongruence exacerbates symptoms and provokes additional sensations in patients with chronic pain. This study aimed to evaluate whether a visually mediated incongruence between motor output and sensory input aggravates symptoms and triggers additional sensations in patients with chronic WAD. Methods. Thirty-five patients with chronic WAD and 31 healthy controls were subjected to a coordination test. They performed congruent and incongruent arm movements while viewing a whiteboard or mirror. Results. All patients with chronic WAD (n = 35) reported sensory changes such as increased pain, tightness, loss of control, dizziness or feelings of peculiarity at some stage of the test protocol. No significant differences in frequency and intensity of sensory changes were found between the various test stages (P > 0.05). In the healthy control group, 18 (58%) subjects reported sensory changes at some stage of the test protocol, with the highest number during the incongruent mirror stage (n = 17), corresponding to the highest level of sensorimotor incongruence. The pattern of reported sensory changes during the congruent and incongruent stages was significantly different between both groups (P < 0.05). Conclusion. This study demonstrates an exacerbation of symptoms and/or additional sensory changes due to reducing or disturbing the visual input during action, indicating altered sensorimotor central nervous processing and altered perception of distorted visual feedback in chronic WAD.
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