Clock-drawing in a case of left visuo-spatial neglect: a deficit of disengagement?

Neuropsychologia. 1995 Mar;33(3):353-8. doi: 10.1016/0028-3932(94)00106-y.


A patient (C.B.) with severe left visuo-spatial neglect and hemianopia after right hemisphere stroke was tested on three conditions of a clock-drawing task. Either on spontaneous drawing or when the number sequence was provided by the experimenter, C.B. drew a clockface with left-sided numbers transposed to the right side of the dial. By contrast, when each number was drawn on a separate dial, its location was correct and there was no transposition. Directional hypokinesia or a representational deficit cannot explain these effects. It is proposed that a deficit in disengaging attention from right-sided visual stimuli plays a critical role in some forms of number transpositions.

Publication types

  • Case Reports

MeSH terms

  • Aged
  • Attention*
  • Cerebrovascular Disorders / complications*
  • Cerebrovascular Disorders / physiopathology
  • Eye Movements
  • Female
  • Hemianopsia / etiology*
  • Hemianopsia / physiopathology
  • Humans
  • Occipital Lobe / physiopathology
  • Parietal Lobe / physiopathology
  • Task Performance and Analysis*
  • Temporal Lobe / physiopathology
  • Visual Fields*