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Levels of processing and language modality specificity in working memory
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. (HEAD)
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. (HEAD)
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. Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences. (HEAD)
2013 (English)In: Neuropsychologia, ISSN 0028-3932, E-ISSN 1873-3514, Vol. 51, no 4, 656-666 p.Article in journal (Refereed) Published
Abstract [en]

Neural networks underpinning working memory demonstrate sign language specific components possibly related to differences in temporary storage mechanisms. A processing approach to memory systems suggests that the organisation of memory storage is related to type of memory processing as well. In the present study, we investigated for the first time semantic, phonological and orthographic processing in working memory for sign- and speech-based language. During fMRI we administered a picture-based 2-back working memory task with Semantic, Phonological, Orthographic and Baseline conditions to 11 deaf signers and 20 hearing non-signers. Behavioural data showed poorer and slower performance for both groups in Phonological and Orthographic conditions than in the Semantic condition, in line with depth-of-processing theory. An exclusive masking procedure revealed distinct sign-specific neural networks supporting working memory components at all three levels of processing. The overall pattern of sign-specific activations may reflect a relative intermodality difference in the relationship between phonology and semantics influencing working memory storage and processing.

Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 51, no 4, 656-666 p.
Keyword [en]
Sign language; Speech; Working memory; Levels of processing; fMRI; Semantic; Phonological; Orthographic
National Category
Social Sciences
Identifiers
URN: urn:nbn:se:liu:diva-91770DOI: 10.1016/j.neuropsychologia.2012.12.011ISI: 000317257600009OAI: oai:DiVA.org:liu-91770DiVA: diva2:619038
Available from: 2013-05-01 Created: 2013-05-01 Last updated: 2017-12-06

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Rudner, MaryKarlsson, ThomasGunnarsson, JohanRönnberg, Jerker

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