Speech impairment in Parkinson’s disease: experimental and clinical approaches
Abstract
Voice and speech disorders are quite frequent in patients diagnosed with Parkinson’s disease (PD). The aims of the current thesis were: (i) to examine the effects of loudness and rate manipulations on speech production in patients with PD and to identify speech indices with the sensitivity to detect these effects over time, (ii) to examine how concurrent performance affects normal and loud speech production in patients with PD and (iii) to examine the feasibility of a 12-week pilot group rehabilitation programme that combines speech with non-speech rehabilitation principles. The research was conducted in three studies and different samples were recruited for each study. All participants underwent examination of their motor abilities and their speech was also assessed. In all three studies, speech assessment protocols included similar assessment procedures and stimuli, but there were differences in the speech elicitation tasks and the extracted indices according to the aim of each study ...
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