The role of visual representations during the lexical access of spoken words

被引：26

作者：

Lewis, Gwyneth ^{[1
]}

Poeppel, David ^{[1
]}

机构：

[1] NYU, Dept Psychol, New York, NY 10003 USA

来源：

BRAIN AND LANGUAGE | 2014年 / 134卷

基金：

美国国家科学基金会;

关键词：

MEG; pMTG; Lexical access; Speech recognition; Imageability; ABSTRACT WORDS; BRAIN; SPEECH; LANGUAGE; MEG; COMPREHENSION; PERCEPTION; CONCRETE; SOUND; FMRI;

D O I：

10.1016/j.bandl.2014.03.008

中图分类号：

R36 [病理学]; R76 [耳鼻咽喉科学];

学科分类号：

100104 ; 100213 ;

摘要：

Do visual representations contribute to spoken word recognition? We examine, using MEG, the effects of sublexical and lexical variables at superior temporal (ST) areas and the posterior middle temporal gyrus (pMTG) compared with that of word imageability at visual cortices. Embodied accounts predict early modulation of visual areas by imageability - concurrently with or prior to modulation of pMTG by lexical variables. Participants responded to speech stimuli-varying continuously in imageability during lexical decision with simultaneous MEG recording. We employed the linguistic variables in a new type of correlational time course analysis to assess trial-by-trial activation in occipital, ST, and pMTG regions of interest (ROIs). The linguistic variables modulated the ROIs during different time windows. Critically, visual regions reflected an imageability effect prior to effects of lexicality on pMTG. This surprising effect supports a view on which sensory aspects of a lexical item are not a consequence of lexical activation. (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：1 / 10

页数：10

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