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Article: Differential activity in left inferior frontal gyrus for pseudowords and real words: An event-related fMRI study on auditory lexical decision

TitleDifferential activity in left inferior frontal gyrus for pseudowords and real words: An event-related fMRI study on auditory lexical decision
Authors
Issue Date2005
PublisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/38751
Citation
Human Brain Mapping, 2005, v. 25 n. 2, p. 212-221 How to Cite?
AbstractAfter Newman and Twieg ([2001]: Hum Brain Mapp 14:39-47) and others, we used a fast event-related functional magnetic resonance imaging (fMRI) design and contrasted the lexical processing of pseudowords and real words. Participants carried out an auditory lexical decision task on a list of randomly intermixed real and pseudo Chinese two-character (or two-syllable) words. The pseudowords were constructed by recombining constituent characters of the real words to control for sublexical code properties. Processing of pseudowords and real words activated a highly comparable network of brain regions, including bilateral inferior frontal gyrus, superior, middle temporal gyrus, calcarine and lingual gyrus, and left supramarginal gyrus. Mirroring a behavioral lexical effect, left inferior frontal gyrus (IFG) was significantly more activated for pseudowords than for real words, This result disconfirms a popular view that this area plays a role in grapheme-to-phoneme conversion, as such a conversion process was unnecessary in our task with auditory stimulus presentation. An alternative view was supported that attributes increased activity in left IFG for pseudowords to general processes in decision making, specifically in making positive versus negative responses. Activation in left supramarginal gyrus was of a much larger volume for real words than for pseudowords, suggesting a role of this region in the representation of phonological or semantic information for two-character Chinese words at the lexical level. © 2005 Wiley-Liss, Inc.
Persistent Identifierhttp://hdl.handle.net/10722/179506
ISSN
2015 Impact Factor: 4.962
2015 SCImago Journal Rankings: 3.165
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorXiao, Zen_US
dc.contributor.authorZhang, JXen_US
dc.contributor.authorWang, Xen_US
dc.contributor.authorWu, Ren_US
dc.contributor.authorHu, Xen_US
dc.contributor.authorWeng, Xen_US
dc.contributor.authorTan, LHen_US
dc.date.accessioned2012-12-19T09:58:03Z-
dc.date.available2012-12-19T09:58:03Z-
dc.date.issued2005en_US
dc.identifier.citationHuman Brain Mapping, 2005, v. 25 n. 2, p. 212-221en_US
dc.identifier.issn1065-9471en_US
dc.identifier.urihttp://hdl.handle.net/10722/179506-
dc.description.abstractAfter Newman and Twieg ([2001]: Hum Brain Mapp 14:39-47) and others, we used a fast event-related functional magnetic resonance imaging (fMRI) design and contrasted the lexical processing of pseudowords and real words. Participants carried out an auditory lexical decision task on a list of randomly intermixed real and pseudo Chinese two-character (or two-syllable) words. The pseudowords were constructed by recombining constituent characters of the real words to control for sublexical code properties. Processing of pseudowords and real words activated a highly comparable network of brain regions, including bilateral inferior frontal gyrus, superior, middle temporal gyrus, calcarine and lingual gyrus, and left supramarginal gyrus. Mirroring a behavioral lexical effect, left inferior frontal gyrus (IFG) was significantly more activated for pseudowords than for real words, This result disconfirms a popular view that this area plays a role in grapheme-to-phoneme conversion, as such a conversion process was unnecessary in our task with auditory stimulus presentation. An alternative view was supported that attributes increased activity in left IFG for pseudowords to general processes in decision making, specifically in making positive versus negative responses. Activation in left supramarginal gyrus was of a much larger volume for real words than for pseudowords, suggesting a role of this region in the representation of phonological or semantic information for two-character Chinese words at the lexical level. © 2005 Wiley-Liss, Inc.en_US
dc.languageengen_US
dc.publisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/38751en_US
dc.relation.ispartofHuman Brain Mappingen_US
dc.subject.meshAcoustic Stimulationen_US
dc.subject.meshAdolescenten_US
dc.subject.meshAdulten_US
dc.subject.meshAsian Continental Ancestry Groupen_US
dc.subject.meshBrain Mappingen_US
dc.subject.meshFemaleen_US
dc.subject.meshFrontal Lobe - Anatomy & Histology - Physiologyen_US
dc.subject.meshFunctional Laterality - Physiologyen_US
dc.subject.meshHumansen_US
dc.subject.meshLanguageen_US
dc.subject.meshLanguage Testsen_US
dc.subject.meshMagnetic Resonance Imagingen_US
dc.subject.meshMaleen_US
dc.subject.meshOccipital Lobe - Anatomy & Histology - Physiologyen_US
dc.subject.meshParietal Lobe - Anatomy & Histology - Physiologyen_US
dc.subject.meshSpeech Perception - Physiologyen_US
dc.subject.meshTemporal Lobe - Anatomy & Histology - Physiologyen_US
dc.subject.meshVerbal Behavior - Physiologyen_US
dc.titleDifferential activity in left inferior frontal gyrus for pseudowords and real words: An event-related fMRI study on auditory lexical decisionen_US
dc.typeArticleen_US
dc.identifier.emailTan, LH: tanlh@hku.hken_US
dc.identifier.authorityTan, LH=rp01202en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1002/hbm.20105en_US
dc.identifier.pmid15846769-
dc.identifier.scopuseid_2-s2.0-19544362716en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-19544362716&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume25en_US
dc.identifier.issue2en_US
dc.identifier.spage212en_US
dc.identifier.epage221en_US
dc.identifier.isiWOS:000229194500002-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridXiao, Z=14044420000en_US
dc.identifier.scopusauthoridZhang, JX=7601342094en_US
dc.identifier.scopusauthoridWang, X=8968559300en_US
dc.identifier.scopusauthoridWu, R=8911019700en_US
dc.identifier.scopusauthoridHu, X=34770364200en_US
dc.identifier.scopusauthoridWeng, X=7102594100en_US
dc.identifier.scopusauthoridTan, LH=7402233462en_US
dc.identifier.citeulike9696619-

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