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Related Experiment Videos

Is space representation distorted in neglect?

H O Karnath1, S Ferber

  • 1Department of Neurology, University of Tübingen, Germany. karnath@uni-tuebingen.de

Neuropsychologia
|January 27, 1999
PubMed
Summary
This summary is machine-generated.

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This study found no evidence of distorted spatial perception in patients with neglect. Findings suggest that altered horizontal space representation does not explain their failure to explore contralesional space.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Clinical Neurology

Background:

  • Neglect following brain damage may involve altered spatial representation.
  • Two models propose compressed or anisometric spatial representation along the horizontal axis.

Purpose of the Study:

  • To test models of spatial representation distortion in neglect patients.
  • To investigate subjective perception of spatial distances in the horizontal plane.

Main Methods:

  • Experiment 1: Patients positioned equidistant LEDs in a semicircle.
  • Experiment 2: Assessed subjective perception of distances in left and right hemispace.

Main Results:

  • No evidence of uniform compression or expansion of subjective space was found.

Related Experiment Videos

  • No evidence of anisometry (unequal scaling) along the earth-horizontal axis was observed.

    • Conclusions:

    • Findings argue against horizontal spatial distortion as an explanation for neglect.
    • Altered subjective space representation does not account for failure to explore contralesional space.