Dramatic effects of speech task on motor and linguistic planning in severely dysfluent parkinsonian speech
Identifieur interne : 000436 ( Main/Exploration ); précédent : 000435; suivant : 000437Dramatic effects of speech task on motor and linguistic planning in severely dysfluent parkinsonian speech
Auteurs : Diana Van Lancker Sidtis [États-Unis] ; Krista Cameron [États-Unis] ; John J. Sidtis [États-Unis]Source :
- Clinical linguistics & phonetics [ 0269-9206 ] ; 2012.
Abstract
In motor speech disorders, dysarthric features impacting intelligibility, articulation, fluency, and voice emerge more saliently in conversation than in repetition, reading, or singing. A role of the basal ganglia in these task discrepancies has been identified. Further, more recent studies of naturalistic speech in basal ganglia dysfunction have revealed that formulaic language is more impaired than novel language. This descriptive study extends these observations to a case of severely dysfluent dysarthria due to a parkinsonian syndrome. Dysfluencies were quantified and compared for conversation, two forms of repetition, reading, recited speech, and singing. Other measures examined phonetic inventories, word forms, and formulaic language. Phonetic, syllabic, and lexical dysfluencies were more abundant in conversation than in other task conditions. Formulaic expressions in conversation were reduced compared to normal speakers. A proposed explanation supports the notion that the basal ganglia contribute to formulation of internal models for execution of speech.
Url:
DOI: 10.3109/02699206.2012.696307
PubMed: 22774929
PubMed Central: 4344191
Affiliations:
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A role of the basal ganglia in these task discrepancies has been identified. Further, more recent studies of naturalistic speech in basal ganglia dysfunction have revealed that formulaic language is more impaired than novel language. This descriptive study extends these observations to a case of severely dysfluent dysarthria due to a parkinsonian syndrome. Dysfluencies were quantified and compared for conversation, two forms of repetition, reading, recited speech, and singing. Other measures examined phonetic inventories, word forms, and formulaic language. Phonetic, syllabic, and lexical dysfluencies were more abundant in conversation than in other task conditions. Formulaic expressions in conversation were reduced compared to normal speakers. 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