Apraxia in a patient with atypical cerebral dominance

Academic Article


  • Liepmann postulated that the left hemisphere of right-handed persons contains the "movement formulas" that control purposeful skilled movements of the limbs on both sides of the body. Accordingly, in right-handers apraxia should follow damage to the left hemisphere, whereas right hemisphere damage should not lead to apraxia. Although this is generally true, we recently examined a right-handed man who after a right hemispheric stroke became aphasic and apraxic with his nonparalyzed right hand. Our observations suggest that the right hemisphere of this right-handed man made a critical contribution to the planning and execution of skilled movements. This case provides evidence that right-handers should not be considered a homogeneous group in terms of cerebral motor dominance and that contrary to Liepmann's postulate, hemispheric dominance for the control of skilled movements does not entirely determine handedness. © 1987.
  • Authors

    Published In

    Digital Object Identifier (doi)

    Author List

  • Rapcsak SZ; Rothi LJG; Heilman KM
  • Start Page

  • 450
  • End Page

  • 463
  • Volume

  • 6
  • Issue

  • 4