Examining Lateralized Lexical Ambiguity Processing Using Dichotic and Cross-Modal Tasks

Autor/inn/en	Atchley, Ruth Ann; Grimshaw, Gina; Schuster, Jonathan; Gibson, Linzi
Titel	Examining Lateralized Lexical Ambiguity Processing Using Dichotic and Cross-Modal Tasks
Quelle	In: Neuropsychologia, 49 (2011) 5, S.1044-1051 (8 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0028-3932
DOI	10.1016/j.neuropsychologia.2011.01.010
Schlagwörter	Semantics; Figurative Language; Brain Hemisphere Functions; Language Processing; Lateral Dominance; Task Analysis; Correlation; Listening Comprehension; Decision Making; Vocabulary + Suchen Sie Ihr Suchwort? Semantik; Sprachverarbeitung; Hemisphärendominanz; Aufgabenanalyse; Korrelation; Hörverständnis; Decision-making; Entscheidungsfindung; Wortschatz
Abstract	The individual roles played by the cerebral hemispheres during the process of language comprehension have been extensively studied in tasks that require individuals to read text (for review see Jung-Beeman, 2005). However, it is not clear whether or not some aspects of the theorized laterality models of semantic comprehension are a result of the modality of presentation. Extending earlier work examining lateralized semantic processing using lexically ambiguous words, the current experiments utilized two modified lexical-decision tasks (one fully auditory and one cross-modal) with dichotically presented target stimuli. When targets were presented to the right ear/left hemisphere there was a distinct advantage for detecting words that are associated with the dominant meaning of the ambiguous word over the subordinate meaning. In contrast, for left ear/right hemisphere trials, there was either no difference between the pattern of semantic access for dominant and subordinate meaning (dichotic only) or a processing advantage for the subordinate meaning of the ambiguous word (with cross-modal presentation). These data suggest that the complimentary hemispheric strategies that allow for semantic access are not modality specific and instead characterize how the hemispheres each contribute to comprehension for both speech and text. Thus, dichotic presentation does seem to allow for the study of subtle hemispheric difference in meaning comprehension. (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