Speech Errors in Progressive Non-Fluent Aphasia

Autor/inn/en	Ash, Sharon; McMillan, Corey; Gunawardena, Delani; Avants, Brian; Morgan, Brianna; Khan, Alea; Moore, Peachie; Gee, James; Grossman, Murray
Titel	Speech Errors in Progressive Non-Fluent Aphasia
Quelle	In: Brain and Language, 113 (2010) 1, S.13-20 (8 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0093-934X
DOI	10.1016/j.bandl.2009.12.001
Schlagwörter	Phonetics; Phonemics; Patients; Language Processing; Speech; Picture Books; Aphasia; Error Patterns; Neurological Impairments; Diseases; Psychomotor Skills; Diagnostic Tests; Control Groups; Brain Hemisphere Functions + Suchen Sie Ihr Suchwort? Phonetik; Fonetik; Fonemsystem; Patient; Sprachverarbeitung; Speaking; Sprechen; Picture book; Bilderbuch; Expressive Aphasie; Aphasie; Fehlertyp; Neurodegenerative Erkrankung; Disease; Krankheit; Psychomotorische Aktivität; Diagnostic test; Diagnostischer Test
Abstract	The nature and frequency of speech production errors in neurodegenerative disease have not previously been precisely quantified. In the present study, 16 patients with a progressive form of non-fluent aphasia (PNFA) were asked to tell a story from a wordless children's picture book. Errors in production were classified as either phonemic, involving language-based deformations that nevertheless result in possible sequences of English speech segments; or phonetic, involving a motor planning deficit and resulting in non-English speech segments. The distribution of cortical atrophy as revealed by structural MRI scans was examined quantitatively in a subset of PNFA patients (N=7). The few errors made by healthy seniors were only phonemic in type. PNFA patients made more than four times as many errors as controls. This included both phonemic and phonetic errors, with a preponderance of errors (82%) classified as phonemic. The majority of phonemic errors were substitutions that shared most distinctive features with the target phoneme. The systematic nature of these substitutions is not consistent with a motor planning deficit. Cortical atrophy was found in prefrontal regions bilaterally and peri-Sylvian regions of the left hemisphere. We conclude that the speech errors produced by PNFA patients are mainly errors at the phonemic level of language processing and are not caused by a motor planning impairment. (Contains 5 tables and 4 figures.) (As Provided).
Anmerkungen	Elsevier. 6277 Sea Harbor Drive, Orlando, FL 32887-4800. Tel: 877-839-7126; Tel: 407-345-4020; Fax: 407-363-1354; e-mail: usjcs@elsevier.com; Web site: http://www.elsevier.com
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10