Vision and Visual Discrimination Suffer in Parkinson’s Disease: Evoked Potential Evidence

  • I. Bodis-Wollner
  • S. Pang
  • A. Falk
  • M. F. Ghilardi
  • L. Mylin
Part of the Advances in Behavioral Biology book series (ABBI, volume 39)


Patients affected by Parkinson’s Disease (PD) not infrequently complain of some visual difficulty yet their visual acuity is intact. Although on careful questioning “double vision” may clarify itself as perceiving uncertain borders of images, more complex complaints cannot be easily classified as “visual” or as “cognitive” defects. In fact, both have been demonstrated in PD. While spatial frequency dependent visual defects probably result from retinal dopaminergic (DA) deficiency, the anatomy and neuropharmacology of cognitive changes in PD is uncertain.


Visual Evoke Potential Visual Deficit Late Positive Component Late Visual Evoke Potential Cortical Visual Evoke Potential 
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Copyright information

© Plenum Press, New York 1991

Authors and Affiliations

  • I. Bodis-Wollner
    • 1
    • 2
  • S. Pang
    • 1
  • A. Falk
    • 1
  • M. F. Ghilardi
    • 1
  • L. Mylin
    • 1
  1. 1.The VEP Laboratory, Department of Neurology, Themount Sinai School of MedicineCUNYNew YorkUSA
  2. 2.Department of Ophthalmology, Themount Sinai School of MedicineCUNYNew YorkUSA

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