We studied verbal reactions to visual stimuli in ten subjects with idiopathic Parkinson's Disease (PD) of Hoehn-Yahr stages 1 through 2, untreated, and ten age-matched controls, by means of acousticogram (ACG), surface oromandibular EMG, electrolaryngogram (EGG), and lip and jaw movement recording. Mean reaction times were measured with a device that presented words, acquired the signals and calculated response times and durations. A slight slowing in Verbal Reaction Times (VRTs) was found in the PD group with respect to controls. In two patients we observed two bursts of EMG activity during the responses:an early contraction, and a later burst coinciding approximately with the ACG.
|Number of pages||1|
|Journal||Italian Journal of Neurological Sciences|
|Publication status||Published - 1997|
ASJC Scopus subject areas
- Clinical Neurology