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The neural basis of arithmetic and phonology in deaf signing individuals
Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences. Linköping University, The Swedish Institute for Disability Research.
Karolinska Inst, Sweden.
Linköping University, Department of Behavioural Sciences and Learning, Psychology. Linköping University, Faculty of Arts and Sciences. Linköping University, The Swedish Institute for Disability Research.
Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences. Linköping University, The Swedish Institute for Disability Research.
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2019 (English)In: Language, Cognition and Neuroscience, ISSN 2327-3798, E-ISSN 2327-3801, Vol. 34, no 7, p. 813-825Article in journal (Refereed) Published
Abstract [en]

Deafness is generally associated with poor mental arithmetic, possibly due to neuronal differences in arithmetic processing across language modalities. Here, we investigated for the first time the neuronal networks supporting arithmetic processing in adult deaf signers. Deaf signing adults and hearing non-signing peers performed arithmetic and phonological tasks during fMRI scanning. At whole brain level, activation patterns were similar across groups. Region of interest analyses showed that although both groups activated phonological processing regions in the left inferior frontal gyrus to a similar extent during both phonological and multiplication tasks, deaf signers showed significantly more activation in the right horizontal portion of the inferior parietal sulcus. This region is associated with magnitude manipulation along the mental number line. This pattern of results suggests that deaf signers rely more on magnitude manipulation than hearing non-signers during multiplication, but that phonological involvement does not differ significantly between groups.Abbreviations: AAL: Automated Anatomy Labelling; fMRI: functional magnetic resonance imaging; HIPS: horizontal portion of the intraparietal sulcus; lAG: left angular gyrus; lIFG: left inferior frontal gyrus; rHIPS: right horizontal portion of the intraparietal sulcus

Place, publisher, year, edition, pages
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD , 2019. Vol. 34, no 7, p. 813-825
Keywords [en]
Simple arithmetic; phonological processing; brain imaging; deaf signers; sign language
National Category
Neurosciences
Identifiers
URN: urn:nbn:se:liu:diva-159232DOI: 10.1080/23273798.2019.1616103ISI: 000475650400001OAI: oai:DiVA.org:liu-159232DiVA, id: diva2:1341863
Note

Funding Agencies|Swedish Research Council [2005-1353, 349-2007-8654]

Available from: 2019-08-12 Created: 2019-08-12 Last updated: 2019-08-12

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Andin, JosefineDahlström, ÖrjanRönnberg, JerkerRudner, Mary
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Disability ResearchFaculty of Arts and SciencesThe Swedish Institute for Disability ResearchPsychology
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