Related Experiment Videos
Colour discrimination thresholds in Parkinson's disease: results obtained with a rapid computer-controlled colour
B C Regan1, N Freudenthaler, R Kolle
1Department of Experimental Psychology, University of Cambridge, UK. bcr1001@cam.ac.uk
Vision Research
|January 20, 1999
Abstract:
A dysfunction of dopaminergic retinal neurons is thought to occur in Parkinson's disease, manifesting itself in impaired performance on various visual discrimination tasks. We have investigated whether differences in colour discrimination could readily be detected between a normal group and a Parkinsonian group, using a computer-controlled test of colour vision. Although some individual Parkinsonian patients showed an abnormal elevation of colour discrimination thresholds, there was no significant difference between the normal group and the Parkinsonian group.