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Article: Number forms in the brain

TitleNumber forms in the brain
Authors
Issue Date2008
PublisherMIT Press. The Journal's web site is located at http://mitpress.mit.edu/jocn
Citation
Journal Of Cognitive Neuroscience, 2008, v. 20 n. 9, p. 1547-1556 How to Cite?
AbstractMental images of number lines, Galton's "number forms" (NF), are a useful way of investigating the relation between number and space. Here we report the first neuroimaging study of number-form synesthesia, investigating 10 synesthetes with NFs going from left to right compared with matched controls. Neuroimaging with functional magnetic resonance imaging revealed no difference in brain activation during a task focused on number magnitude but, in a comparable task on number order, synesthetes showed additional activations in the left and right posterior intraparietal sulci, suggesting that NFs are essentially ordinal in nature. Our results suggest that there are separate but partially overlapping neural circuits for the processing of ordinal and cardinal numbers, irrespective of the presence of an NF, but a core region in the anterior intraparietal sulcus representing (cardinal) number meaning appears to be activated autonomously, irrespective of task. This article provides an important extension beyond previous studies that have focused on word-color or grapheme-color synesthesia. © 2008 Massachusetts Institute of Technology.
Persistent Identifierhttp://hdl.handle.net/10722/60770
ISSN
2015 Impact Factor: 3.559
2015 SCImago Journal Rankings: 2.712
ISI Accession Number ID
Funding AgencyGrant Number
Leverhulme Trust
Functional Imaging Laboratory (UCL)
Funding Information:

This research was supported by a grant from the Leverhulme Trust to J. W. and B. B. We thank Professor Chris Frith of the Functional Imaging Laboratory (UCL) for supporting this research, and Professor Tetsuro Matsuzawa of the Primate Research Institute (Kyoto University) for suggesting the idea of an ordinal Stroop task. J. T. designed the experiments, tested participants, and analyzed data. B. B. and J. W. contributed to design and interpretation, and J. W. maintains a database of synesthetes from which participants were drawn.

References

 

DC FieldValueLanguage
dc.contributor.authorTang, Jen_HK
dc.contributor.authorWard, Jen_HK
dc.contributor.authorButterworth, Ben_HK
dc.date.accessioned2010-05-31T04:18:07Z-
dc.date.available2010-05-31T04:18:07Z-
dc.date.issued2008en_HK
dc.identifier.citationJournal Of Cognitive Neuroscience, 2008, v. 20 n. 9, p. 1547-1556en_HK
dc.identifier.issn0898-929Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/60770-
dc.description.abstractMental images of number lines, Galton's "number forms" (NF), are a useful way of investigating the relation between number and space. Here we report the first neuroimaging study of number-form synesthesia, investigating 10 synesthetes with NFs going from left to right compared with matched controls. Neuroimaging with functional magnetic resonance imaging revealed no difference in brain activation during a task focused on number magnitude but, in a comparable task on number order, synesthetes showed additional activations in the left and right posterior intraparietal sulci, suggesting that NFs are essentially ordinal in nature. Our results suggest that there are separate but partially overlapping neural circuits for the processing of ordinal and cardinal numbers, irrespective of the presence of an NF, but a core region in the anterior intraparietal sulcus representing (cardinal) number meaning appears to be activated autonomously, irrespective of task. This article provides an important extension beyond previous studies that have focused on word-color or grapheme-color synesthesia. © 2008 Massachusetts Institute of Technology.en_HK
dc.languageengen_HK
dc.publisherMIT Press. The Journal's web site is located at http://mitpress.mit.edu/jocnen_HK
dc.relation.ispartofJournal of Cognitive Neuroscienceen_HK
dc.titleNumber forms in the brainen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0898-929X&volume=20&issue=9&spage=1547&epage=1556&date=2008&atitle=Number+Forms+in+the+Brainen_HK
dc.identifier.emailTang, J: joeytang@hkucc.hku.hken_HK
dc.identifier.authorityTang, J=rp00639en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1162/jocn.2008.20120en_HK
dc.identifier.pmid18345983-
dc.identifier.scopuseid_2-s2.0-50649109798en_HK
dc.identifier.hkuros149445en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-50649109798&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume20en_HK
dc.identifier.issue9en_HK
dc.identifier.spage1547en_HK
dc.identifier.epage1556en_HK
dc.identifier.isiWOS:000258695900002-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridTang, J=15520029000en_HK
dc.identifier.scopusauthoridWard, J=36119465400en_HK
dc.identifier.scopusauthoridButterworth, B=7005729624en_HK

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