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Western University

Theses/Dissertations

Parkinson's disease

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Full-Text Articles in Speech and Hearing Science

A Comparison Of Speech Amplification Devices For Individuals With Parkinson's Disease And Hypophonia, Monika Andreetta Jul 2013

A Comparison Of Speech Amplification Devices For Individuals With Parkinson's Disease And Hypophonia, Monika Andreetta

Electronic Thesis and Dissertation Repository

One of the most prevalent speech impairments in idiopathic Parkinson’s disease (PD) is hypophonia, a reduction in intensity, which typically decreases intelligibility. Speech amplification devices are a potential solution; however, despite the availability of a broad range of devices, no previous studies systematically compare their efficacy in PD. This study examined the effects of speech task (Sentence Intelligibility Test versus conversation), background noise (no noise versus 65 dB SPL multi-talker noise), and selected devices (ADDvox, BoomVox, ChatterVox, Oticon, SoniVox, Spokeman, and Voicette) for 11 PD and 10 control participants, using outcome measures of speech intensity, speech-to-noise ratio, intelligibility, sound quality, …


Effect Of Concurrent Walking And Interlocutor Distance On Conversational Speech Intensity And Rate In Parkinson's Disease, Cassandra M. Mccaig Jun 2013

Effect Of Concurrent Walking And Interlocutor Distance On Conversational Speech Intensity And Rate In Parkinson's Disease, Cassandra M. Mccaig

Electronic Thesis and Dissertation Repository

This study examined the effects of concurrent walking tasks and interlocutor distance on conversational speech production in fifteen individuals with idiopathic Parkinson’s disease (PD) and fourteen age-equivalent controls. Recent studies of speech in PD have demonstrated that changes in the behavioural conditions and the environmental context can have a powerful effect on the severity of speech symptoms in PD. This investigation focused on changes in speech intensity and speech rate in response to changes in walking speed and interlocutor distance. Results suggest that the introduction of a concurrent walking task significantly increased the conversational speech intensity of both controls and …


The Effect Of Multitalker Background Noise On Speech Intelligibility In Parkinson's Disease And Controls, Talia M. Leszcz Jun 2012

The Effect Of Multitalker Background Noise On Speech Intelligibility In Parkinson's Disease And Controls, Talia M. Leszcz

Electronic Thesis and Dissertation Repository

This study investigated the effect of multi-talker background noise on speech intelligibility in participants with hypophonia due to Parkinson’s disease (PD). Ten individuals with PD and 10 geriatric controls were tested on four speech intelligibility tasks at the single word, sentence, and conversation level in various conditions of background noise. Listeners assessed speech intelligibility using word identification or orthographic transcription procedures. Results revealed non-significant differences between groups when intelligibility was assessed in no background noise. PD speech intelligibility decreased significantly relative to controls in the presence of background noise. A phonetic error analysis revealed a distinct error profile for PD …