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Related Experiment Videos

Crossed buccofacial apraxia.

R B Mani1, D N Levine

  • 1Neurology Service, Spaulding Rehabilitation Hospital, Boston.

Archives of Neurology
|May 1, 1988
PubMed
Summary
This summary is machine-generated.

This study challenges the typical understanding of brain dominance for motor control. It presents cases where the non-dominant hemisphere, not typically associated with skilled movements, controls buccofacial actions.

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Area of Science:

  • Neuroscience
  • Neurology
  • Motor Control

Background:

  • The left cerebral hemisphere is typically dominant for learned motor acts and language, especially in right-handed individuals.
  • Buccofacial apraxia, a disorder of skilled facial movements, is usually linked to left hemisphere damage.

Observation:

  • Two patients presented with severe buccofacial apraxia following strokes in the middle cerebral artery territory.
  • The strokes occurred in the hemisphere ipsilateral to their preferred hand and language-dominant side.

Findings:

  • Neither patient exhibited aphasia or significant limb apraxia.
  • Imaging and examination revealed no abnormalities in the hemisphere typically dominant for motor control and language.

Implications:

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  • These cases suggest that the non-dominant hemisphere can control skilled buccofacial movements.
  • This finding expands our understanding of hemispheric specialization for motor control and language.