Color VEPs in Parkinson's disease

L. Barbato, S. Rinalduzzi, M. Laurenti, S. Ruggieri, N. Accornero

Research output: Contribution to journalArticlepeer-review


Evoked potential studies have confirmed visual pathway impairment in Parkinson's disease. Dopamine is also known to be involved in retinal color vision mechanisms. In this study, pattern evoked potentials were recorded in 20 parkinsonian patients in "on" and "off" conditions to compare the sensitivity of black-and-white and color pattern stimuli. Evoked responses to colored patterns proved more sensitive to l-DOPA therapy. This finding supports the proposed dopamine modulation of the retinal color system and suggests that color pattern evoked potential studies might be used in monitoring dopamine therapy in parkinsonian patients.

Original languageEnglish
Pages (from-to)169-172
Number of pages4
JournalElectroencephalography and Clinical Neurophysiology - Evoked Potentials
Issue number2
Publication statusPublished - 1994


  • Color VEPs
  • Color vision
  • Parkinson disease

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

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