Directional hypokinesia and hemispatial inattention in neglect

Academic Article

Abstract

  • Subjects with neglect of left hemispace may err to the right when bisecting lines. This error has been attributed either to a directional hypokinesia (failure to execute movements fully in or towards the contralateral hemispace) or to a failure to attend to or represent sensory information. Four subjects with neglect were tested on a line bisection task in which these two hypotheses were differentiated by preventing direct viewing of the line and instead using a video camera and monitor, each of which could be moved independently into right or left hemispace. The performance of 2 subjects was consistent with the predictions of the directional hypokinesia hypothesis; the performance of the other 2 subjects was consistent with the attention-representation deficit hypothesis. These data suggest that both a directional hypokinesia and an attention-represeniation deficit may each be a primary determinant of neglect. © 1990 Oxford University Press.
  • Authors

    Published In

  • Brain  Journal
  • Digital Object Identifier (doi)

    Author List

  • Coslett HB; Bowers D; Fitzpatrick E; Haws B; Heilman KM
  • Start Page

  • 475
  • End Page

  • 486
  • Volume

  • 113
  • Issue

  • 2