Visual object recognition deficits in early Parkinson's disease

The nature of the visual perception deficits in Parkinson's disease (PD) has remained unclear. The present study explored whether there emerge deficits in the different stages of visual object recognition in early PD. Twenty-eight patients and 14 healthy controls were studied. A set of reaction...

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Bibliographic Details
Published in:Parkinsonism & related disorders 2004-06, Vol.10 (4), p.227-233
Main Authors: Laatu, Sari, Revonsuo, Antti, Pihko, Laura, Portin, Raija, Rinne, Juha O
Format: Article
Language:English
Subjects:
Aged
Cognition Disorders - physiopathology
Female
Humans
Male
Middle Aged
Object recognition
Parkinson Disease - physiopathology
Parkinson's disease
Pattern Recognition, Visual - physiology
Photic Stimulation - methods
Reaction Time - physiology
Statistics, Nonparametric
Visual Perception - physiology
Visual processing
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Summary:The nature of the visual perception deficits in Parkinson's disease (PD) has remained unclear. The present study explored whether there emerge deficits in the different stages of visual object recognition in early PD. Twenty-eight patients and 14 healthy controls were studied. A set of reaction time tasks were applied to measure the different stages of object recognition. The results indicate some selective problems in both basic perceptual and semantic visual processing at an early stage of cognitive deterioration in PD.
ISSN:1353-8020
1873-5126
DOI:10.1016/j.parkreldis.2004.02.001