Electrophysiological correlates of visual categorization evidence for cognitive dysfunctions in early Parkinson's disease /
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,...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
2002
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| Sorozat: | COGNITIVE BRAIN RESEARCH
13 No. 2 |
| doi: | 10.1016/S0926-6410(01)00090-8 |
| mtmt: | 1032233 |
| Online Access: | http://publicatio.bibl.u-szeged.hu/10271 |
| Tartalmi kivonat: | 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, (C) 2002 Elsevier Science B.V. All rights reserved. |
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| Terjedelem/Fizikai jellemzők: | 153-158 |
| ISSN: | 0926-6410 |