Syllable Frequency and Syllable Structure in Apraxia of Speech

Autor/inn/en	Aichert, Ingrid; Ziegler, Wolfram
Titel	Syllable Frequency and Syllable Structure in Apraxia of Speech
Quelle	In: Brain and Language, 88 (2004) 1, S.148-159 (12 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0093-934X
DOI	10.1016/S0093-934X(03)00296-7
Schlagwörter	Patients; Syllables; Articulation (Speech); Speech Impairments; Phonemes; Cognitive Processes; Language Patterns; Error Patterns + Suchen Sie Ihr Suchwort? Patient; Silbe; Speech impairment; Speech handicap; Speech handicaps; Language handicps; Language impairments; Sprachbehinderung; Fonem; Cognitive process; Kognitiver Prozess; Sprachmodell; Sprachstruktur; Fehlertyp
Abstract	Recent accounts of the pathomechanism underlying apraxia of speech (AOS) were based on the speech production model of Levelt, Roelofs, and Meyer, and Meyer (1999)1999. The apraxic impairment was localized to the phonetic encoding level where the model postulates a mental store of motor programs for high-frequency syllables. Varley and Whiteside (2001a) assumed that in patients with AOS syllabic motor programs are no longer accessible and that these patients are required to use a subsyllabic encoding route. In this study, we tested this hypothesis by exploring the influence of syllable frequency and syllable structure on word repetition in 10 patients with AOS. A significant effect of syllable frequency on error rates was found. Moreover, apraxic errors on consonant clusters were influenced by their position relative to syllable boundaries. These results demonstrate that apraxic patients have access to the syllabary, but that they fail to retrieve the syllabic motor patterns correctly. Our findings are incompatible with a subsyllabic route model of apraxia of speech. (Author).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10