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Cited by 24Voice and Speech DisordersPhonetics and Phonology ResearchParkinson's Disease Mechanisms and Treatments

The effect of increased vocal intensity on interarticulator timing in speakers with Parkinson's disease: A preliminary analysis

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Richardson, Kelly, Sussman, Joan E., Stathopoulos, Elaine T., Huber, Jessica E.·2014·Journal of Communication Disorders
DOI 10.1016/j.jcomdis.2014.09.004PMC PMC4293242
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Abstract

Purpose The purpose of the current study was to investigate the effect of increased vocal intensity on interarticulator timing in individuals with Parkinson's disease (PD). Methods Ten individuals with mild to moderate hypophonia, secondary to PD, were selected for study. Over an 8-week treatment period, multi-talker babble noise was presented monaurally to the individuals with PD during everyday communication contexts to elicit increased vocal intensity (Lombard effect). Outcome measures included sound pressure level (SPL), voice onset time (VOT), VOT ratio, percent voicing, and speech intelligibility. Results Group and individual participant responses to the treatment are reported and discussed. Speakers with PD were shown to significantly increase SPL in response to treatment. Six of the 10 speakers showed improved temporal coordination between the laryngeal and supralaryngeal mechanisms (interarticulator timing) in response to treatment. Four of the 10 speakers, however, showed reduced laryngeal–supralaryngeal timing at the end of treatment. Group speech intelligibility scores were significantly higher post-treatment as compared to pre-treatment. Conclusions Voice treatment during everyday communication resulted in improved temporal coordination across the laryngeal and supralaryngeal mechanisms for the majority of speakers with PD and made them easier to understand. Further investigations are planned to explore individual differences in response to treatment. The identification of speaker-specific voicing and devoicing strategies is consistent with the heterogeneous nature of PD. Learning outcomes Readers will be able to: 1. Describe the speech and voice characteristics of individuals with Parkinson's disease. 2. Define the Lombard effect. 3. Describe acoustic measures of voice onset time and percent voicing. 4. Describe the effect of voice treatment on voice onset time and percent voicing in individuals with Parkinson's disease.

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  • The present SPL data are consistent with prior studies reporting vocal intensity gains in monologue speech after completing LSVT LOUD therapy and when using the SpeechVive prosthetic.

    “The present SPL data are consistent with prior studies reporting vocal intensity gains in monologue speech after completing the LSVT LOUD therapy (Ramig et al., 2018; Ramig, Sapir, Countryman, et al., 2001) and when using the SpeechVive prosthetic (Richardson et al., 2014; Stathopoulos et al., 2014).”

    From Perception of Physical Demand, Mental Demand, and Performance: A Comparison of Two Voice Interventions for Parkinson's Disease (2022) · cites this paper as Richardson et al., 2014

    The Results (§3.1.3; page unavailable) report a significant 2.9 dB SPL increase after SpeechVive treatment, and the device-setting passage (§2.2.2) describes increased intensity during conversational speech while wearing it. But the measured treatment outcome came from reading short sentences without the device, not monologue speech while using SpeechVive (§§2.3.1–2.3.2). (LLM, conf=0.88)

    Experimental — accuracy not yet measured

  • The present SPL data are consistent with prior studies reporting vocal intensity gains in monologue speech after completing LSVT LOUD therapy or while wearing the SpeechVive prosthesis.

    “The present SPL data are consistent with prior studies reporting vocal intensity gains in monologue speech after completing LSVT LOUD therapy (Ramig et al., 2018; Ramig, Sapir, Countryman, et al., 2001; Ramig, Sapir, Fox, & Countryman, 2001) or while wearing the SpeechVive prosthesis (Richardson et al., 2014; Stathopoulos et al., 2014).”

    From Respiratory Responses to Two Voice Interventions for Parkinson's Disease (2022) · cites this paper as Richardson et al., 2014

    The Device setting section reports that participants spoke approximately 3 dB louder during conversational speech while wearing SpeechVive. But the measured treatment gains came from reading short sentences, not monologue speech, and the Treatment paradigm says participants did not wear the device during testing. The paper therefore supports an intensity gain associated with SpeechVive, but not the specified monologue result. (LLM, conf=0.88)

    Experimental — accuracy not yet measured

  • Prior studies have demonstrated a positive Lombard effect in individuals with PD.

    “Prior studies have demonstrated a positive Lombard effect in individuals with PD (Adams et al., 2020; Richardson et al., 2014; Shrivastav et al., 2014; Stathopoulos et al., 2014).”

    From Perception of Physical Demand, Mental Demand, and Performance: A Comparison of Two Voice Interventions for Parkinson's Disease (2022) · cites this paper as Richardson et al., 2014

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Authors
Richardson, K., Sussman, J. E., Stathopoulos, E. T., & Huber, J. E.
Affiliations
  • University at Buffalo, State University of New York (US)
  • Purdue University West Lafayette (US)
Corresponding author
Richardson, Kelly
ORCID
Venue
Journal of Communication Disorders
Publisher
Elsevier BV
Published
2014-11
Volume
52
Pages
44-64
ISSN
0021-9924 (ISSN-L)
DOI
10.1016/j.jcomdis.2014.09.004
PMC
PMC4293242
OpenAlex
W2090001111
Cited by
24
References
108
Citations by year
2026: 4 · 2024: 3 · 2023: 1 · 2022: 6 · 2021: 1 · 2020: 1 · 2019: 2 · 2018: 3 · 2017: 1 · 2016: 1 · 2015: 1
FWCI
0.67
Type
journal article
Language
en
Open access
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations
  • Journal of Communication Disorders (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute on Deafness and Other Communication Disorders
  • Indiana Clinical and Translational Sciences Institute (TR000006)
Topics
  • Health Sciences › Medicine › Physiology › Voice and Speech Disorders
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Phonetics and Phonology Research
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
Keywords
Parkinson's disease, hypophonia, Lombard effect, vocal intensity, voice onset time, speech intelligibility, sound pressure level, voice therapy
MeSH terms
Aged, Cues, Female, Humans, Male, Parkinson Disease, Speech, Speech Acoustics, Speech Disorders, Speech Intelligibility, Time Factors, Voice, Voice Disorders

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