The fan effect in fMRI: left hemisphere specialization in verbal working memory

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TypeArticle
Journal titleNeuroReport
Volume15
Issue12
Pages18511855; # of pages: 5
AbstractWe studied the fan effect of verbal working memory using functional magnetic resonance imaging (fMRI). Participants were presented with a sentence-pair matching task that described semantic relationships (e.g. classroom-school). Working memory load and semantic processing were manipulated by increasing the number of sentences to be remembered and varying whether they matched expectation. Increased working memory load elicited activation in left dorsal frontal and left inferior parietal regions, and also delayed the hemodynamic responses. Convergent results from semantic matches occurred in the left parietal lobe, whereas, left ventral frontal activation from mismatches diverged from working memory results. The findings were consistent with behavioural and electrophysiological evidence, with the fan effect in fMRI providing novel insight into the spatiotemporal nature of verbal working memory in the left hemisphere.
Publication date
Linkhttp://journals.lww.com/neuroreport/Abstract/2004/08260/The_fan_effect_in_fMRI__left_hemisphere.3.aspx
LanguageEnglish
AffiliationNational Research Council Canada; NRC Institute for Biodiagnostics
Peer reviewedNo
NRC number2106
NPARC number9147949
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Record identifier73834382-a9b6-4eeb-866a-d2177593c3fc
Record created2009-06-25
Record modified2016-05-09
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