Visual evoked potentials in Parkinson's disease—correlation with clinical involvement

2001 
Abstract A total of 18 patients with Parkinson's disease were evaluated clinically and by transient checker-board VEP study. There were significant differences between bradykinesia ( P P P r : 0.57; P =0.014) and less severely involved side ( r : 0.82; P =0.00003) showed medium to high degree positive correlations with VEP amplitudes by stimulation of the corresponding eye. By studying monocular fullfield responses our data can only suggest that there is no prechiasmal asymmetry. The positive correlation between the VEP amplitude and bradykinesia score might indicate that D2 receptors dominate in the retina.
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