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Effects of task characteristics on unimanual and bimanual movement times
Högskolan i Gävle, Akademin för hälsa och arbetsliv, Avdelningen för arbets- och folkhälsovetenskap, Arbetshälsovetenskap. Högskolan i Gävle, Centrum för belastningsskadeforskning.ORCID-id: 0000-0001-9327-6177
University of Michigan, Ann Arbor, USA.
University of Michigan, Ann Arbor, USA.
2013 (Engelska)Ingår i: Ergonomics, ISSN 0014-0139, E-ISSN 1366-5847, Vol. 56, nr 4, s. 612-622Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Fitts’ law cannot be used to predict movement times (MTs) of bimanual tasks since no empirical relationships associating task difficulty and bimanual MT have been demonstrated yet. Development of a ‘bimanual task difficulty index’ has been challenged by the complex patterns of coordination involved in simultaneously performing two tasks, one with each hand, under a control system with limited visual and attentional resources. To address this fundamental issue in human motor performance, bimanual object transfers with the left and right hands to targets of various precision requirements and separated by different distances were studied in six healthy subjects. Visual resource allocation during task performance was used to identify ‘primary’ and ‘secondary’ hand movements in bimanual tasks. While the primary movement was similar to a unimanual movement, the secondary MT varied with its own, as well as the contralateral hand’s task constraints. These results, which were stable and consistent across six subjects, provide preliminary evidence that visual behaviour, indicating closed-loop control, can be used to systematically derive bimanual MTs.

Ort, förlag, år, upplaga, sidor
2013. Vol. 56, nr 4, s. 612-622
Nyckelord [en]
Bimanual movements; movement time; motor performance; visual feedback
Nationell ämneskategori
Produktionsteknik, arbetsvetenskap och ergonomi
Identifikatorer
URN: urn:nbn:se:hig:diva-11926DOI: 10.1080/00140139.2012.750383ISI: 000318155700003Scopus ID: 2-s2.0-84877584962OAI: oai:DiVA.org:hig-11926DiVA, id: diva2:529525
Tillgänglig från: 2012-05-30 Skapad: 2012-05-30 Senast uppdaterad: 2018-03-13Bibliografiskt granskad

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