Rhythmic Entrainment in Bilingual Speakers With Dysarthria

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

NA

Total Enrollment

6 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-09-01

Study Completion Date

2019-02-20

Brief Summary

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The objectives of this study are to determine i) the effect of rhythmic entrainment of speech with hand gestures and auditory rhythmic cues on intelligibility and speech naturalness in Spanish-accented speakers of English in two pathology groups: ataxic dysarthria and hypokinetic dysarthria secondary to idiopathic Parkinson's disease; and ii) the extent to which speech rate and effort are control parameters of entrainment. These objectives will be achieved with the following specific aims:

Specific Aim 1: Determine the effect of three rates of hand gestures and auditory rhythmic cues and the degree to which learning and carry-over occur.

Specific Aim 2: Determine the effect of increased speech effort, operationalized as clear speech, and the interaction effect of clear speech with hand gestures and auditory rhythmic cues.

Specific Aim 3: Investigate the perception of speech rhythm and its relationship to entrainment.

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Detailed Description

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The objectives of this study are to determine i) the effect of rhythmic entrainment of speech with hand gestures and auditory rhythmic cues on intelligibility and speech naturalness in Spanish-accented speakers of English in two pathology groups: ataxic dysarthria and hypokinetic dysarthria secondary to idiopathic Parkinson's disease; and ii) the extent to which speech rate and effort are control parameters of entrainment. These objectives will be achieved with the following specific aims:

Specific Aim 1: Determine the effect of three rates of hand gestures and auditory rhythmic cues and the degree to which learning and carry-over occur.

Specific Aim 2: Determine the effect of increased speech effort, operationalized as clear speech, and the interaction effect of clear speech with hand gestures and auditory rhythmic cues.

Specific Aim 3: Investigate the perception of speech rhythm and its relationship to entrainment.

The protocol calls for 12 talkers to participate in a single case experimental design: 6 Spanish-accented speakers of English and 6 native English speakers, and each language group consisting of 2 healthy controls, 2 adults diagnosed with ataxic dysarthria and 2 adults diagnosed with hypokinetic dysarthria secondary to idiopathic Parkinson's disease. Sixty monolingual healthy adult listeners will rate intelligibility, accentedness, and ease of understanding.

Conditions

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Parkinson Disease Ataxia

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Single case experimental design

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Gestures

Use of hand gestures to improve speech rhythm and speech production

Group Type EXPERIMENTAL

Gestures

Intervention Type BEHAVIORAL

Use of gestures to improve speech production

Auditory

Use of auditory cues to improve speech rhythm and speech production

Group Type EXPERIMENTAL

Auditory

Intervention Type BEHAVIORAL

Use of auditory cues to improve speech production

Interventions

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Auditory

Use of auditory cues to improve speech production

Intervention Type BEHAVIORAL

Gestures

Use of gestures to improve speech production

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* diagnosis of idiopathic Parkinson's disease (4) or dysarthria secondary to ataxia (4) or healthy (4)
* monolingual speaker of American English (6) or native speaker of Spanish who speaks English with a Spanish accent (6)
* age 21 or older

Exclusion Criteria

* Cognitive impairment that prevents participation in the therapy
* Fluent speakers of languages other than English or Spanish
* younger than 21 years

Minimum Eligible Age

21 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes