Electrophysiological correlates of visual categorization: Evidence for cognitive dysfunctions in early Parkinson's disease

Andrea Antal, S. Kéri, G. Dibó, G. Benedek, Z. Janka, L. Vécsei, Ivan Bodis-Wollner

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Our aim was to examine the electrophysiological correlates of perceptual categorization in Parkinson's disease (PD). We recorded visual event-related potentials (ERPs) in a natural scene categorization task in drug naive idiopathic PD patients and healthy control subjects. In the control group, there was a significant early difference (150-250 ms poststimulus) between ERPs elicited by pictures containing animals and scenes without animals. In spite of relatively preserved basic-level visual functions, this was not observable in the PD group. These results raise the possibility for striatal contributions to visual categorization and may provide a novel protocol for further clinical studies.

Original languageEnglish
Pages (from-to)153-158
Number of pages6
JournalCognitive Brain Research
Volume13
Issue number2
DOIs
Publication statusPublished - 2002

Fingerprint

Parkinson Disease
Evoked Potentials
Corpus Striatum
Healthy Volunteers
Control Groups
Pharmaceutical Preparations
Cognitive Dysfunction
Clinical Studies

Keywords

  • Categorization
  • Natural scene
  • Neostriatum
  • Parkinson's disease
  • Visual event-related potential

ASJC Scopus subject areas

  • Behavioral Neuroscience
  • Cognitive Neuroscience
  • Experimental and Cognitive Psychology

Cite this

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AU - Antal, Andrea

AU - Kéri, S.

AU - Dibó, G.

AU - Benedek, G.

AU - Janka, Z.

AU - Vécsei, L.

AU - Bodis-Wollner, Ivan

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