Rhythmic Entrainment in Bilingual Speakers With Dysarthria
Trial Snapshot
- Phase
- Not Applicable
- Status
- Terminated
- Sponsor
- Enrollment
- 6
- Locations
- 1
- Primary Endpoint
- Intelligibility
Study Overview
Brief Summary
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.
Detailed Description
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.
Study Design
- Study Type
- Interventional
- Allocation
- Non Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Treatment
- Masking
- None
Eligibility Criteria
- Ages
- 21 Years to — (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
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
Arms & Interventions
Gestures
Use of hand gestures to improve speech rhythm and speech production
Intervention: Gestures (Behavioral)
Auditory
Use of auditory cues to improve speech rhythm and speech production
Intervention: Auditory (Behavioral)
Outcomes
Primary Outcomes
Intelligibility
Time Frame: immediately upon completion of the therapy
Intelligibility = the accuracy with which a listener understands a speaker. It will be measured by having the subjects undergoing the therapy ("the talkers") read 28 phrases using accompanying gesture or auditory cues and listeners will transcribe the sentences. The number of words accurately transcribed / the number of words in the phrase = intelligibility score for each phrase per listener
Secondary Outcomes
- Ease of understanding(Immediately upon completion of the therapy)
- Speech naturalness(immediately upon completion of the therapy)