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Related Experiment Videos

[Biopercular lesion with inverse dissociation]

I Campello1, I Velilla, A López-López

  • 1Servicio de Neurologia, Hospital Miguel Servet de Zaragoza.

Revista De Neurologia
|September 1, 1995
PubMed
Summary
This summary is machine-generated.

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Foix-Chavany-Marie Syndrome, a form of pseudobulbar palsy, typically involves stroke-induced opercular lesions. This case presents an inverse dissociation of facial movements due to brain metastases, suggesting distinct neural pathways for emotional and voluntary actions.

Area of Science:

  • Neurology
  • Neuroscience
  • Neuroanatomy

Background:

  • Foix-Chavany-Marie Syndrome (anterior opercular syndrome) is the cortical manifestation of pseudobulbar palsy, commonly caused by opercular strokes.
  • Classical presentation involves dysarthria and facio-pharyngo-glosso-masticatory dysplasia with automatic-voluntary dissociation.
  • An inverse dissociation, characterized by emotional facial paralysis with preserved voluntary movement, is linked to supplementary motor area lesions.

Observation:

  • A 65-year-old woman with breast cancer developed progressive dysphagia and severe dysarthria.
  • Neurological examination revealed paralysis of facial muscles in emotional/automatic movements, while voluntary innervation was intact.
  • Neuroradiology identified brain metastases in both Rolandic opercula.

Findings:

Related Experiment Videos

  • The patient exhibited an inverse dissociation of facial movements, a rare presentation.
  • Bilateral Rolandic opercular metastases were identified as the cause of the inverse dissociation.
  • This case supports the hypothesis of separate cortical areas or distinct neural pathways for voluntary and emotional facial movements.

Implications:

  • The findings challenge the understanding of neuroanatomic bases for automatic-voluntary dissociation in facial movements.
  • This case highlights the potential for brain metastases to cause complex neurological deficits mimicking other syndromes.
  • Further research into the distinct neural substrates governing emotional versus voluntary facial expressions is warranted.