Chronic motion perception deficits from midline cerebellar lesions in human

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Abstract

A selective motion perception deficit is seen in patients with acute midline cerebellar lesions. Patients with more lateralized acute cerebellar damage do not demonstrate such a deficit. However, as these patients were tested only between 10 and 14 days post-ictus, the stability of this perceptual deficit into the chronic phase remained undetermined. The current study extends the previous findings by showing that the motion perception deficit caused by mid-line cerebellar lesions remains permanent at least 2 years into the chronic phase. The extent and longevity of this deficit resembles that of the well known motion-blind patient LM who has a large cerebellar lesion in addition to her extensive cortical damage. Again, we propose that the mid-line cerebellar damage may produce a severe motion perception deficit by disrupting the visual-motor integration mechanisms involved in perceptual stabilization, even though cortical motion processing mechanisms are unaffected.

Original languageEnglish (US)
Pages (from-to)2219-2224
Number of pages6
JournalVision research
Volume38
Issue number14
DOIs
StatePublished - Jul 1 1998

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Keywords

  • Brain lesion
  • Cerebellum
  • Motion perception

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems

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