Processing emotional tone from speech in Parkinson’s disease: A role for the basal ganglia
Pell, M.D. & Leonard, C.L. (2003) Processing emotional tone from speech in Parkinson’s disease: A role for the basal ganglia , 3(4), 275-288
In this study, twenty-one individuals with Parkinson’s disease were tested to infer how basal ganglia dysfunction (dysfunction to structures that are near the middle of the brain) contribute to the processing of emotional speech tone. Non-demented individuals with and without Parkinson’s disease (twenty-one in each group) completed neuropsychological tests (tests that assess brain function) and tasks that required them to process the meaning of emotional speech tone in various ways (discrimination, identification, emotional feature rating). The individuals with PD in this study were unable to discriminate, verbally identify, and rate five "basic" attributes of emotionally expressed utterances. Difficulties in comprehending emotional speech tone emerged in the absence of cognitive impairment and were not influenced by the severity of depressive signs in individuals with PD who had depression.