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Related Experiment Videos

Size distortion in spatial neglect.

I Keller1, J Ditterich, T Eggert

  • 1Neurological Clinic, Bad Aibling, Germany.

Neuroreport
|June 14, 2000
PubMed
Summary
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Patients with right parietal lesions show spatial distortion, impacting their perception of space. This study suggests neglect arises from a distorted internal representation of the external world.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Visuospatial Processing

Background:

  • Right parietal lesions are associated with spatial neglect.
  • The spatial distortion hypothesis proposes altered spatial representations in neglect.

Purpose of the Study:

  • To investigate if a distorted egocentric spatial representation underlies neglect in visuospatial tasks.
  • To test the spatial distortion hypothesis in patients with right parietal lesions.

Main Methods:

  • 27 neglect patients performed a size comparison task with horizontal bars.
  • Stimuli were presented symmetrically around the midline or in left/right egocentric space.

Main Results:

  • Size comparison data supported a distorted egocentric representation of space.

Related Experiment Videos

  • Evidence suggests a dynamic remapping of space influences performance.

    • Conclusions:

    • Abnormalities in size comparison tasks stem from a distorted internal representation of the world.
    • Spatial distortion may be linked to dynamic spatial mapping influenced by visuospatial attention.