The effects of Lee Silverman voice treatment on the facial movement of Parkinson's disease patients and the way they are perceived by others
Item
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Title
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The effects of Lee Silverman voice treatment on the facial movement of Parkinson's disease patients and the way they are perceived by others
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Identifier
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d_2009_2013:3781e05949d5:11010
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identifier
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11426
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Creator
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Dumer, Aleksey I.,
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Contributor
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Joan C. Borod
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Date
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2011
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Language
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English
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Publisher
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City University of New York.
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Subject
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Neurosciences | Speech therapy | Behavioral psychology | FACS | LSVT | masked facies | negative perception by others | Parkinson's disease
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Abstract
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Parkinson's disease (PD) is characterized by impaired facial movement, a deficit that, as previous studies suggest, leads others to attribute negative traits to PD patients. Given the associations between facial movement and vocal parameters, it was hypothesized that the Lee Silverman Voice Treatment (LSVT; Ramig, Fox, & Sapir, 2004), an efficient voice treatment for PD patients, would reduce parkinsonian facial movement deficits (Hypothesis I) and result in more positive perceptions of PD patients' personality and behavior (Hypothesis II).;Fifty six participants---16 LSVT patients with PD, 12 articulation treatment (ARTIC) patients with PD, 17 untreated PD patients, and 11 demographically-matched controls without PD---produced monologues about happy emotional experiences on two occasions: Time 1 and Time 2. LSVT and ARTIC were administered during a one-month period between the two occasions. The monologue production task was adapted from the New York Emotion Battery (NYEB; Borod, Obler, & Welkowitz, 1992). Healthy adult observers (n=110) rated participants' personality and behavior based on participants' videorecorded facial movement. The Facial Action Coding System (FACS) was used to examine changes in the quantity and variability of facial movement (AU Lability and AU Variability, respectively) and complexity of facial expression (AU Complexity).;The increase of LSVT patients on a canonical variate of AU Lability, AU Variability, and AU Complexity was significantly greater than that of ARTIC patients. Additional analyses showed that this result was due to increases in AU Lability and AU Variability of LSVT patients. The personalities of LSVT patients and non-PD controls were rated significantly more positively by observers viewing video clips recorded at Time 2, relative to those recorded at Time 1. Changes in the examined facial movement parameters of LSVT patients did not mediate changes in observers' ratings of those patients.;These findings suggest that LSVT reduces facial movement deficits in PD and possibly results in a more positive perception of LSVT patients' personalities. Results are discussed in the context of studies showing the psychosocial impact of PD patients' communication problems and preliminary evidence regarding the mechanisms underlying LSVT's effect.
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Type
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dissertation
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Source
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2009_2013.csv
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degree
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Ph.D.
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Program
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Psychology
