Klepousniotou, E, Gracco, VL and Pike, GB (2014) Pathways to lexical ambiguity: fMRI evidence for bilateral fronto-parietal involvement in language processing. Brain and Language, 131. 56 - 64. ISSN 0093-934X
Abstract
Numerous functional neuroimaging studies reported increased activity in the pars opercularis and the pars triangularis (Brodmann's areas 44 and 45) of the left hemisphere during the performance of linguistic tasks. The role of these areas in the right hemisphere in language processing is not understood and, although there is evidence from lesion studies that the right hemisphere is involved in the appreciation of semantic relations, no specific anatomical substrate has yet been identified. This event-related functional magnetic resonance imaging study compared brain activity during the performance of language processing trials in which either dominant or subordinate meaning activation of ambiguous words was required. The results show that the ventral part of the pars opercularis both in the left and the right hemisphere is centrally involved in language processing. In addition, they highlight the bilateral co-activation of this region with the supramarginal gyrus of the inferior parietal lobule during the processing of this type of linguistic material. This study, thus, provides the first evidence of co-activation of Broca's region and the inferior parietal lobule, succeeding in further specifying the relative contribution of these cortical areas to language processing.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2014. Elsevier. Uploaded in accordance with the publisher's self-archiving policy. NOTICE: this is the author’s version of a work that was accepted for publication in Brain and Language. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Brain and Language, 131,(2014) DOI:10.1016/j.bandl.2013.06.002 |
Keywords: | BROCA’S area 44; Event-related fMRI; Homonymy; Inferior parietal lobule; Lexical ambiguity; Metaphor; Polysemy; Supramarginal gyrus; Adult; Brain Mapping; Broca Area; Comprehension; Female; Frontal Lobe; Humans; Language; Magnetic Resonance Imaging; Male; Parietal Lobe; Semantics; Vocabulary |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Psychology (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 27 Feb 2015 13:46 |
Last Modified: | 11 Apr 2017 15:09 |
Published Version: | http://dx.doi.org/10.1016/j.bandl.2013.06.002 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.bandl.2013.06.002 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:83188 |