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1987•Journal of Speech Language and Hearing ResearchRequires access

Temporal Acoustic Measures of Dysarthria Associated with Amyotrophic Lateral Sclerosis

Anthony J. Caruso, Estelle Klasner Burton

Open publisher page 59 citations

Abstract

The purpose of this study was to investigate stop-gap duration, voice onset time (VOT), and vowel duration in intelligible speakers with amyotrophic lateral sclerosis (ALS). Broadband sound spectrograms were used to measure 8 normal and 8 ALS speakers' intelligible speech productions of monosyllabic words containing word-initial stop-plosive consonants (/p, t, k, b, d, g/). Significant differences were found between the two groups for both vowel duration and stop-gap duration; moreover, correlational analysis indicated that the ALS speakers, as a group, exhibited a direct relationship between stop-gap and vowel durations associated with productions of /t/ and /k/. No significant differences were found between the two talker groups for VOT. Results will be related to the neuroanatomical and physiological mechanisms involved in dysarthric (ALS) speech.

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What this paper is about

The purpose of this study was to investigate stop-gap duration, voice onset time (VOT), and vowel duration in intelligible speakers with amyotrophic lateral sclerosis (ALS). Broadband sound spectrograms were used to measure 8 normal and 8 ALS speakers' intelligible speech productions of monosyllabic words containing word-initial stop-plosive consonants (/p, t, k, b, d, g/). Significant differences were found between the two groups for both vowel duration and stop-gap duration; moreover, correlational analysis indicated that the ALS speakers, as a group, exhibited a direct relationship between stop-gap and vowel durations associated with productions of /t/ and /k/. No significant differences were found between the two talker groups for VOT. Results will be related to the neuroanatomical and physiological mechanisms involved in dysarthric (ALS) speech.

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Available abstract

The purpose of this study was to investigate stop-gap duration, voice onset time (VOT), and vowel duration in intelligible speakers with amyotrophic lateral sclerosis (ALS). Broadband sound spectrograms were used to measure 8 normal and 8 ALS speakers' intelligible speech productions of monosyllabic words containing word-initial stop-plosive consonants (/p, t, k, b, d, g/). Significant differences were found between the two groups for both vowel duration and stop-gap duration; moreover, correlational analysis indicated that the ALS speakers, as a group, exhibited a direct relationship between stop-gap and vowel durations associated with productions of /t/ and /k/. No significant differences were found between the two talker groups for VOT. Results will be related to the neuroanatomical and physiological mechanisms involved in dysarthric (ALS) speech.

Key concepts: Amyotrophic lateral sclerosis, Voice-onset time, Dysarthria, Audiology, Duration (music), Vowel, Psychology, Connected speech

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