The Time-Course of Lexical Activation during Sentence Comprehension in People with Aphasia

Autor/inn/en	Ferrill, Michelle; Love, Tracy; Walenski, Matthew; Shapiro, Lewis P.
Titel	The Time-Course of Lexical Activation during Sentence Comprehension in People with Aphasia
Quelle	In: American Journal of Speech-Language Pathology, 21 (2012) 2, (11 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1058-0360
DOI	10.1044/1058-0360(2012/11-0109)
Schlagwörter	Aphasia; Listening Comprehension; Language Processing; Sentences; Priming; College Students; Adults; California + Suchen Sie Ihr Suchwort? Expressive Aphasie; Aphasie; Hörverständnis; Sprachverarbeitung; Sentence analysis; Satzanalyse; Collegestudent; Kalifornien
Abstract	Purpose: To investigate the time-course of processing of lexical items in auditorily presented canonical (subject-verb-object) constructions in young, neurologically unimpaired control participants and participants with left-hemisphere damage and agrammatic aphasia. Method: A cross modal picture priming (CMPP) paradigm was used to test 114 control participants and 8 participants with agrammatic aphasia for priming of a lexical item (direct object noun) immediately after it is initially encountered in the ongoing auditory stream and at 3 additional time points at 400-ms intervals. Results: The control participants demonstrated immediate activation of the lexical item, followed by a rapid loss (decay). The participants with aphasia demonstrated delayed activation of the lexical item. Conclusion: This evidence supports the hypothesis of a delay in lexical activation in people with agrammatic aphasia. The delay in lexical activation feeds syntactic processing too slowly, contributing to comprehension deficits in people with agrammatic aphasia. (Contains 3 tables, 2 figures and 5 footnotes.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10