by Radboud University Nijmegen Immunohistochemistry for alpha-synuclein showing positive staining (brown) of an intraneural Lewy-body in the Substantia nigra in Parkinson’s disease. The effect of dopaminergic medication on the learning abilities of patients with Parkinson’s disease turns out to be linked to the presence of tremor symptoms. In patients who do not experience tremor, dopaminergic medication...
