Sensory Mismatch and Vestibular Dysfunction

This post follows on my ” Sensory Mismatch and persistence of symptoms” post. Interestingly the authors here are looking at more dramatic symptoms that can be caused by sensory mismatch and vestibular dysfunction:

Most significantly the post mentions distorted body schema and body image, leading to de-personalisation and de-realization experiences, including out of body experiences, with associated changes in mood and loss of sense of personal agency.

It is also arguable that sensory mismatch may drive symptoms such as dystonias ( ie writers cramp or spasm in the hands of musicians who lose the  ability to play with a high level of speed and skill.

The hypothesised explanation for this one is relatively simple: – even instability in the upper neck could produce a shift in the mapping of sensory representations of the fingers on to the cerebral cortex and to deeper subcortical structures. That may be enough to produce symptoms in itself, though there may also be involvement of the vestibular  system due to the disturbed inputs caused by neck malalignment.


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