NDLI: The Effect of Individual Differences in Working Memory Capacity on Sentence Comprehension: An fMRI Study

Content Provider	Springer Nature Link
Author	Newman, Sharlene D. Malaia, Evie Seo, Roy Cheng, Hu
Copyright Year	2012
Abstract	This study explores the interaction between working memory systems and language processing by examining how differences in working memory capacity (WMC) modulates neural activation levels and functional connectivity during sentence comprehension. The results indicate that two working memory systems may be involved in sentence comprehension, the verbal working memory system and the episodic buffer, but during different phases of the task. A sub-region of the left inferior frontal gyrus (BA 45) was correlated with WMC during the probe and not during sentence reading while the only region to reveal a correlation with WMC during sentence reading was the posterior cingulate/precuneus area, a region linked to event representation. In addition, functional connectivity analysis suggests that there were two distinct networks affected by WMC. The first was a semantic network that included the middle temporal cortex, an anterior region of the inferior frontal gyrus and the inferior parietal region. The second included the posterior cingulate and BA 45 of the inferior frontal gyrus. We propose here that high capacity readers may generate an event representation of the sentence during reading that aids in comprehension and that this event representation involves the processing of the posterior cingulate cortex.
Starting Page	458
Ending Page	467
Page Count	10
File Format	PDF
ISSN	08960267
Journal	Brain Topography
Volume Number	26
Issue Number	3
e-ISSN	15736792
Language	English
Publisher	Springer US
Publisher Date	2012-11-05
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Working memory Individual differences fMRI Neurosciences Psychiatry Neurology
Content Type	Text
Resource Type	Article
Subject	Neurology Anatomy Radiology, Nuclear Medicine and Imaging Neurology (clinical) Radiological and Ultrasound Technology

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