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Related Experiment Videos

Unilateral spatial neglect recovery after sequential strokes

P Vuilleumier1, D Hester, G Assal

  • 1Department of Neuropsychology, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland.

Neurology
|January 1, 1996
PubMed
Summary
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A patient experienced unilateral spatial neglect after a right parietal stroke, which resolved after a subsequent left frontal stroke. This suggests a distributed network for spatial attention involving both hemispheres.

Area of Science:

  • Neuroscience
  • Cognitive Neurology

Background:

  • Unilateral spatial neglect is a disabling deficit following brain injury.
  • The precise neural networks underlying spatial attention remain incompletely understood.

Observation:

  • A patient developed severe unilateral spatial neglect after a right parietal infarct (angular gyrus, area 39).
  • The neglect symptoms abruptly resolved after a subsequent left frontal infarct (frontal eye field, area 8).

Findings:

  • Sequential lesions in distinct cortical areas (right parietal, left frontal) influenced spatial neglect.
  • The findings implicate the angular gyrus and frontal eye fields in a network modulating spatial attention.

Implications:

  • This case supports a distributed network model for directed spatial attention.

Related Experiment Videos

  • Understanding these networks may inform rehabilitation strategies for attention deficits.