Affiliation:
1. Mayo Clinic and Mayo Foundation, Rochester, Minnesota
Abstract
Thirty-second speech samples were studied of at least 30 patients in each of 7 discrete neurologic groups, each patient unequivocally diagnosed as being a representative of his diagnostic group. Three judges independently rated each of these samples on each of 38 dimensions of speech and voice using a 7-point scale of severity.
Computer analysis based on the means of the three ratings on each patient on each dimension yielded results leading to these conclusions: (1) Speech indeed follows neuroanatomy and neurophysiology. There are multiple types or patterns of dysarthria, each mirroring a different kind of abnormality of motor functioning. (2) These patterns of dysarthria can be differentiated; they sound different. They consist of definitive groupings of certain dimensions of speech and voice, deviant to distinctive degrees. (3) Five types of dysarthria were delineated: flaccid dysarthria (in bulbar palsy), spastic dysarthria (in pseudobulbar palsy), ataxic dysarthria (in cerebellar disorders), hypokinetic dysarthria (in parkinsonism), and hyperkinetic dysarthria (in dystonia and chorea). Also, a mixed dysarthria combining elements of flaccid and spastic dysarthrias was identified in amyotrophic lateral sclerosis. (4) Observed occurrence of a single dimension uniquely in a given neurologic disease and distinctive co-occurrence of several dimensions can aid diagnostically in identification of neurologic disorders.
Publisher
American Speech Language Hearing Association
Cited by
977 articles.
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1. Contributions of Speech Timing and Articulatory Precision to Listener Perceptions of Intelligibility and Naturalness in Parkinson's Disease;Journal of Speech, Language, and Hearing Research;2024-09-12
2. Do Acoustic Characteristics of Dysarthria in People With Parkinson's Disease Differ Across Languages?;Journal of Speech, Language, and Hearing Research;2024-09-12
3. Does Native Language Matter in Perceptual Ratings of Dysarthria?;Journal of Speech, Language, and Hearing Research;2024-09-12
4. Acoustic and Kinematic Predictors of Intelligibility and Articulatory Precision in Parkinson's Disease;Journal of Speech, Language, and Hearing Research;2024-09-11
5. The Contributions of Pitch, Loudness, and Rate Control to Speech Naturalness in Cerebellar Ataxia;American Journal of Speech-Language Pathology;2024-09-06