Neural Substrates for Verbal Working Memory in Deaf Signers: fMRI Study and Lesion Case Report

Autor/inn/en	Buchsbaum, Bradley; Pickell, Bert; Love, Tracy; Hatrak, Marla; Bellugi, Ursula; Hickok, Gregory
Titel	Neural Substrates for Verbal Working Memory in Deaf Signers: fMRI Study and Lesion Case Report
Quelle	In: Brain and Language, 95 (2005) 2, S.265-272 (8 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0093-934X
DOI	10.1016/j.bandl.2005.01.009
Schlagwörter	Stellungnahme; Memory; Sign Language; Deafness; Neurolinguistics; Brain Hemisphere Functions; Learning Modalities + Suchen Sie Ihr Suchwort? Gedächtnis; Gebärdensprache; Gehörlosigkeit; Taubstummheit; Neurolinguistisches Programmieren; Lernumgebung
Abstract	The nature of the representations maintained in verbal working memory is a topic of debate. Some authors argue for a modality-dependent code, tied to particular sensory or motor systems. Others argue for a modality-neutral code. Sign language affords a unique perspective because it factors out the effects of modality. In an fMRI experiment, deaf participants viewed and covertly rehearsed strings of non-sense signs; analyses focused on regions responsive in both sensory and rehearsal phases. Compared with previous findings in hearing subjects, deaf subjects showed a significantly increased involvement of parietal regions. A lesion case study indicates that this network is left-dominant. The findings support the hypothesis that linguistic working memory is supported by modality-specific neural systems, but some modality-neutral systems may also be involved. (Author).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10