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Can mirrors alleviate visual hemineglect?

V S Ramachandran1, E L Altschuler, L Stone

  • 1Brain and Perception Laboratory, Center for Research on Brain and Cognition, UCSD La Jolla, CA 92093-0109, USA. vramacha@ucsd.edu

Medical Hypotheses
|August 28, 1999
PubMed
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Mirror therapy may help patients with right hemisphere stroke recover from visual neglect. By reflecting the neglected left side, some patients improved awareness and object interaction, suggesting a new treatment approach.

Area of Science:

  • Neuroscience
  • Rehabilitation Medicine
  • Ophthalmology

Background:

  • Right hemisphere stroke often causes visual hemineglect, affecting awareness of the left side.
  • Current treatments for visual neglect have varying efficacy.

Purpose of the Study:

  • To introduce and evaluate a novel mirror-based technique for accelerating recovery from visual neglect.
  • To explore the potential of sensory re-calibration in treating neglect.

Main Methods:

  • Patients with right hemisphere stroke were positioned with a mirror reflecting their neglected left visual field.
  • Responses to objects in the neglected field were observed with and without the mirror.
  • Variations in mirror placement and object location were tested for specific patient groups.

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Main Results:

  • One group of patients showed enhanced awareness and correct object interaction when using the mirror.
  • A second group exhibited 'mirror agnosia,' reaching for reflections or behind the mirror.
  • Modifying mirror and object position improved performance in some patients with mirror agnosia.

Conclusions:

  • Mirror therapy shows promise as a novel treatment for visual hemineglect.
  • Patient responses vary, indicating different underlying mechanisms or needs for adaptation.
  • Further research is needed to determine if repeated practice accelerates neglect recovery.