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ThinkMind // COGNITIVE 2010, The Second International Conference on Advanced Cognitive Technologies and Applications // View article cognitive_2010_1_20_30033


Functional Segregation of Semantic Memory and Processing in Ventral Inferior Frontal Gyrus

Authors:
Mi Li
Shengfu Lu
Xiaofei Xue
Ning Zhong

Keywords: left ventral inferior frontal gyrus(LvIFG); function MRI; semantic memory; semantic processing; BOLD signal change

Abstract:
Although many studies in neuroimaging showed that semantic tasks activated the left ventral inferior frontal gyrus (LvIFG), whether there is the functional segregation of LvIFG in the semantic memory and semantic processing remains unclear. In order to determine neural differences of semantic memory and processing in LvIFG with functional MRI, thirty-six subjects performed reading tasks on triplets of either text or figure or text-figure. The text/figure/figure+text tasks activated two common areas located in an anterior portion of LvIFG and a posterior portion of LvIFG. The BOLD signal change of the posterior portion of LvIFG has semantic working memory characteristics because semantic repetition priming and the BOLD signal change of anterior portion of LvIFG has information processing characteristics. The results suggest that the posterior portion of LvIFG unrelated to information forms is for semantic memory, whereas the anterior portion of LvIFG related to information forms is for semantic processing.

Pages: 5 to 10

Copyright: Copyright (c) IARIA, 2010

Publication date: November 21, 2010

Published in: conference

ISSN: 2308-4197

ISBN: 978-1-61208-108-3

Location: Lisbon, Portugal

Dates: from November 21, 2010 to November 26, 2010

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