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Comparative Study
. 2004 Jun;10(4):227-33.
doi: 10.1016/j.parkreldis.2004.02.001.

Visual object recognition deficits in early Parkinson's disease

Sari Laatu  1 , Antti Revonsuo, Laura Pihko, Raija Portin, Juha O Rinne
Affiliations
Comparative Study

Visual object recognition deficits in early Parkinson's disease

Sari Laatu et al. Parkinsonism Relat Disord. 2004 Jun.

Abstract

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.

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