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When “happy” means “sad”: neuropsychological evidence for the right prefrontal cortex contribution to executive semantic processing

Samson, Dana; Connolly, Catherine; Humphreys, Glyn W.

Authors

Dana Samson dana.samson@nottingham.ac.uk

Catherine Connolly

Glyn W. Humphreys g.w.humphreys@bham.ac.uk



Abstract

The contribution of the left inferior prefrontal cortex in semantic processing has been widely investigated in the last decade. Converging evidence from functional imaging studies shows that this region is involved in the “executive” or “controlled” aspects of semantic processing. In this study, we report a single case study of a patient, PW, with damage to the right prefrontal and temporal cortices following stroke. PW showed a problem in executive control of semantic processing, where he could not easily override automatic but irrelevant semantic processing. This case thus shows the necessary role of the right inferior prefrontal cortex in executive semantic processing. Compared to tasks previously used in the literature, our tasks placed higher demands on executive semantic processing. We suggest that the right inferior prefrontal cortex is recruited when the demands on executive semantic processing are particularly high.

Journal Article Type Article
Publication Date Jan 1, 2007
Journal Neuropsychologia
Print ISSN 0028-3932
Electronic ISSN 0028-3932
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 45
Issue 5
APA6 Citation Samson, D., Connolly, C., & Humphreys, G. W. (2007). When “happy” means “sad”: neuropsychological evidence for the right prefrontal cortex contribution to executive semantic processing. Neuropsychologia, 45(5),
Keywords prefrontal cortex; right hemisphere; semantic processing; executive function; selection
Publisher URL http://www.elsevier.com/wps/find/journaldescription.cws_home/247/description#description
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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