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Research paper thumbnail of Speech, Facial and Fine Motor Features for Conversation-Based Remote Assessment and Monitoring of Parkinson's Disease

2022 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), Jul 11, 2022

Research paper thumbnail of The Effects of Speech Tasks on the Prosody of People with Parkinson Disease

Research paper thumbnail of The Effects of Speech Task on Lexical Stress in Parkinson's Disease

American Journal of Speech-language Pathology, Mar 9, 2023

Purpose: Hypokinetic dysarthria associated with Parkinson's disease (PD) is characterized by ... more Purpose: Hypokinetic dysarthria associated with Parkinson's disease (PD) is characterized by dysprosody, yet the literature is mixed with respect to how dysprosody affects the ability to mark lexical stress, possibly due to differences in speech tasks used to assess lexical stress. The purpose of this study was to compare how people with and without PD modulate acoustic dimensions of lexical stress—fundamental frequency, intensity, and duration—to mark lexical stress across three different speech tasks. Method: Twelve individuals with mild-to-moderate idiopathic PD and 12 age- and sex-matched older adult controls completed three speech tasks: picture description, word production in isolation, and word production in lists. Outcome measures were the fundamental frequency, intensity, and duration of the vocalic segments of two trochees (initial stress) and two iambs (final stress) spoken in all three tasks. Results: There were very few group differences. Both groups marked trochees by modulating intensity and fundamental frequency and iambs by modulating duration. Task had a significant impact on the stress patterns used by both groups. Stress patterns were most differentiated in words produced in isolation and least differentiated in lists of words. Conclusions: People with PD did not demonstrate impairments in the production of lexical stress, suggesting that dysprosody associated with PD does not impact all types of prosody in the same way. However, there were reduced distinctions in stress marking that were more apparent in trochees than iambs. In addition, the task used to assess prosody has a significant effect on all acoustic measures. Future research should focus on the use of connected speech tasks to obtain more generalizable measures of prosody in PD.

Research paper thumbnail of Statistical and clinical utility of multimodal dialogue-based speech and facial metrics for Parkinson's disease assessment

Interspeech 2022, Sep 18, 2022

Research paper thumbnail of The Effects of Speech Task on Lexical Stress in Parkinson's Disease

American Journal of Speech-Language Pathology

Purpose: Hypokinetic dysarthria associated with Parkinson's disease (PD) is characterized by ... more Purpose: Hypokinetic dysarthria associated with Parkinson's disease (PD) is characterized by dysprosody, yet the literature is mixed with respect to how dysprosody affects the ability to mark lexical stress, possibly due to differences in speech tasks used to assess lexical stress. The purpose of this study was to compare how people with and without PD modulate acoustic dimensions of lexical stress—fundamental frequency, intensity, and duration—to mark lexical stress across three different speech tasks. Method: Twelve individuals with mild-to-moderate idiopathic PD and 12 age- and sex-matched older adult controls completed three speech tasks: picture description, word production in isolation, and word production in lists. Outcome measures were the fundamental frequency, intensity, and duration of the vocalic segments of two trochees (initial stress) and two iambs (final stress) spoken in all three tasks. Results: There were very few group differences. Both groups marked trochees...

Research paper thumbnail of Statistical and clinical utility of multimodal dialogue-based speech and facial metrics for Parkinson's disease assessment

Research paper thumbnail of Speech, Facial and Fine Motor Features for Conversation-Based Remote Assessment and Monitoring of Parkinson's Disease

2022 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

Research paper thumbnail of The Effects of Speech Tasks on the Prosody of People with Parkinson Disease

One of the key features of the hypokinetic dysarthria associated with Parkinson disease is dyspro... more One of the key features of the hypokinetic dysarthria associated with Parkinson disease is dysprosody. While there has been ample research into the global characterization of speech in Parkinson disease, little is known about how people with Parkinson disease mark lexical stress. This study aimed to determine how people with Parkinson disease modulate pitch, intensity, duration, and vowel space to differentiate between two common lexical stress patterns in English: trochees (strong-weak pattern) and iambs (weak-strong pattern), in two syllable words. Twelve participants with mild to moderate idiopathic Parkinson disease and twelve age- and sex-matched controls completed a series of speech tasks designed to elicit token words of interest in prosodically-relevant speech tasks (picture identification (in isolation and lists) and giving directions (spontaneous speech). Results revealed that people with Parkinson disease produced a higher overall pitch and a smaller vowel space as compar...

Research paper thumbnail of Speech, Facial and Fine Motor Features for Conversation-Based Remote Assessment and Monitoring of Parkinson's Disease

2022 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), Jul 11, 2022

Research paper thumbnail of The Effects of Speech Tasks on the Prosody of People with Parkinson Disease

Research paper thumbnail of The Effects of Speech Task on Lexical Stress in Parkinson's Disease

American Journal of Speech-language Pathology, Mar 9, 2023

Purpose: Hypokinetic dysarthria associated with Parkinson's disease (PD) is characterized by ... more Purpose: Hypokinetic dysarthria associated with Parkinson's disease (PD) is characterized by dysprosody, yet the literature is mixed with respect to how dysprosody affects the ability to mark lexical stress, possibly due to differences in speech tasks used to assess lexical stress. The purpose of this study was to compare how people with and without PD modulate acoustic dimensions of lexical stress—fundamental frequency, intensity, and duration—to mark lexical stress across three different speech tasks. Method: Twelve individuals with mild-to-moderate idiopathic PD and 12 age- and sex-matched older adult controls completed three speech tasks: picture description, word production in isolation, and word production in lists. Outcome measures were the fundamental frequency, intensity, and duration of the vocalic segments of two trochees (initial stress) and two iambs (final stress) spoken in all three tasks. Results: There were very few group differences. Both groups marked trochees by modulating intensity and fundamental frequency and iambs by modulating duration. Task had a significant impact on the stress patterns used by both groups. Stress patterns were most differentiated in words produced in isolation and least differentiated in lists of words. Conclusions: People with PD did not demonstrate impairments in the production of lexical stress, suggesting that dysprosody associated with PD does not impact all types of prosody in the same way. However, there were reduced distinctions in stress marking that were more apparent in trochees than iambs. In addition, the task used to assess prosody has a significant effect on all acoustic measures. Future research should focus on the use of connected speech tasks to obtain more generalizable measures of prosody in PD.

Research paper thumbnail of Statistical and clinical utility of multimodal dialogue-based speech and facial metrics for Parkinson's disease assessment

Interspeech 2022, Sep 18, 2022

Research paper thumbnail of The Effects of Speech Task on Lexical Stress in Parkinson's Disease

American Journal of Speech-Language Pathology

Purpose: Hypokinetic dysarthria associated with Parkinson's disease (PD) is characterized by ... more Purpose: Hypokinetic dysarthria associated with Parkinson's disease (PD) is characterized by dysprosody, yet the literature is mixed with respect to how dysprosody affects the ability to mark lexical stress, possibly due to differences in speech tasks used to assess lexical stress. The purpose of this study was to compare how people with and without PD modulate acoustic dimensions of lexical stress—fundamental frequency, intensity, and duration—to mark lexical stress across three different speech tasks. Method: Twelve individuals with mild-to-moderate idiopathic PD and 12 age- and sex-matched older adult controls completed three speech tasks: picture description, word production in isolation, and word production in lists. Outcome measures were the fundamental frequency, intensity, and duration of the vocalic segments of two trochees (initial stress) and two iambs (final stress) spoken in all three tasks. Results: There were very few group differences. Both groups marked trochees...

Research paper thumbnail of Statistical and clinical utility of multimodal dialogue-based speech and facial metrics for Parkinson's disease assessment

Research paper thumbnail of Speech, Facial and Fine Motor Features for Conversation-Based Remote Assessment and Monitoring of Parkinson's Disease

2022 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

Research paper thumbnail of The Effects of Speech Tasks on the Prosody of People with Parkinson Disease

One of the key features of the hypokinetic dysarthria associated with Parkinson disease is dyspro... more One of the key features of the hypokinetic dysarthria associated with Parkinson disease is dysprosody. While there has been ample research into the global characterization of speech in Parkinson disease, little is known about how people with Parkinson disease mark lexical stress. This study aimed to determine how people with Parkinson disease modulate pitch, intensity, duration, and vowel space to differentiate between two common lexical stress patterns in English: trochees (strong-weak pattern) and iambs (weak-strong pattern), in two syllable words. Twelve participants with mild to moderate idiopathic Parkinson disease and twelve age- and sex-matched controls completed a series of speech tasks designed to elicit token words of interest in prosodically-relevant speech tasks (picture identification (in isolation and lists) and giving directions (spontaneous speech). Results revealed that people with Parkinson disease produced a higher overall pitch and a smaller vowel space as compar...

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