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Load and distinctness interact in working memory for lexical manual gestures
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. Linköping University, The Swedish Institute for Disability Research. Not Found:Linkoping Univ, Dept Behav Sci and Learning, Swedish Inst Disabil Res, Linnaeus Ctr HEAD, S-58183 Linkoping, Sweden.
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.ORCID iD: 0000-0002-1896-8250
2015 (English)In: Frontiers in Psychology, ISSN 1664-1078, E-ISSN 1664-1078, Vol. 6, 1147Article in journal (Refereed) Published
Abstract [en]

The Ease of Language Understanding model (Ronnberg et al., 2013) predicts that decreasing the distinctness of language stimuli increases working memory load; in the speech domain this notion is supported by empirical evidence. Our aim was to determine whether such an over-additive interaction can be generalized to sign processing in sign-naive individuals and whether it is modulated by experience of computer gaming. Twenty young adults with no knowledge of sign language performed an n-back working memory task based on manual gestures lexicalized in sign language; the visual resolution of the signs and working memory load were manipulated. Performance was poorer when load was high and resolution was low. These two effects interacted over-additively, demonstrating that reducing the resolution of signed stimuli increases working memory load when there is no pre-existing semantic representation. This suggests that load and distinctness are handled by a shared amodal mechanism which can be revealed empirically when stimuli are degraded and load is high, even without pre-existing semantic representation. There was some evidence that the mechanism is influenced by computer gaming experience. Future work should explore how the shared mechanism is influenced by pre-existing semantic representation and sensory factors together with computer gaming experience.

Place, publisher, year, edition, pages
Frontiers , 2015. Vol. 6, 1147
Keyword [en]
working memory; manual gestures; load; distinctness; resolution; computer games
National Category
Basic Medicine
Identifiers
URN: urn:nbn:se:liu:diva-121314DOI: 10.3389/fpsyg.2015.01147ISI: 000359988000001PubMedID: 26321979OAI: oai:DiVA.org:liu-121314DiVA: diva2:854134
Note

Funding Agencies|Linnaeus Centre HEAD grant from the Swedish Research Council

Available from: 2015-09-16 Created: 2015-09-14 Last updated: 2017-12-05

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Rudner, MaryHolmer, Emil

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