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Related Experiment Videos

Prism adaptation improves chronic visual and haptic neglect: a single case study.

Robert D McIntosh1, Yves Rossetti, A David Milner

  • 1Department of Psychology, University of Durham, UK. r.d.mcintosh@dur.ac.uk

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
|July 31, 2002
PubMed
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Prism adaptation therapy offers temporary relief for left visual neglect symptoms. This study shows benefits even in chronic cases, impacting spatial representation beyond visual tasks.

Area of Science:

  • Neuroscience
  • Ophthalmology
  • Rehabilitation

Background:

  • Left visual neglect is a debilitating condition often resulting from brain injury.
  • Visuomotor adaptation using optical prisms is a known intervention for visual neglect.

Observation:

  • A 74-year-old woman with chronic left visual neglect (9 months) underwent prism adaptation therapy.
  • She received three weekly sessions of adaptation to rightward displacing prisms.

Findings:

  • The patient showed substantial improvements in visual neglect tests (cancellation, copying, bisection).
  • Notably, improvements extended to a haptic spatial judgment task, indicating broader spatial representation effects.

Implications:

  • Prism adaptation can be beneficial for chronic visual neglect disorders.

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  • The therapy may influence higher-level spatial representation beyond purely visual processing.