Case Reports
doi: 10.1007/BF02191554.
Automatic-voluntary dissociation: an unusual facial paresis in a patient with probable multiple sclerosis
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- PMID: 1486114
- DOI: 10.1007/BF02191554
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Case Reports
Automatic-voluntary dissociation: an unusual facial paresis in a patient with probable multiple sclerosis
Eur Arch Psychiatry Clin Neurosci.
1992.
Abstract
A patient with multiple sclerosis is described who presented with a unilateral loss of voluntary function of his lower face muscles. However, in an emotional situation, there was strong involuntary innervation of these muscles: automatic-voluntary dissociation. The subcortical afferents to the facial motor nucleus are discussed. It is hypothesized that cortical disinhibition of midbrain nuclei underlies the accentuated involuntary innervation.
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