Thursday, May 13, 2010

Thursday May 13, 2010
On stroke


Q:What is Balint syndrome?


Answer: Balint syndrome is a triad of

  • visual simultanagnosia,
  • optic ataxia, and
  • apraxia of gaze

Visual simultanagnosia: implies an inability to examine a scene and integrate its parts into a cohesive interpretation. A patient can identify specific parts of a scene but cannot describe the entire picture.

Optic ataxia: implies a loss of hand-eye coordination such that reaching or performing a motor task under visual guidance is clumsy and uncoordinated.

Apraxia of gaze: is a misnomer describing a supranuclear deficit in the ability to initiate a saccade on command.

This may occur with bilateral parieto-occipital infarction, most often in the watershed between the PCA and MCA territories.

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