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Motorisk planering hos barn och vuxna: - associationer med motor imagery och exekutiva funktioner
Umeå University, Faculty of Social Sciences, Department of Psychology.
Umeå University, Faculty of Social Sciences, Department of Psychology.
2019 (Swedish)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [sv]

Denna studie undersökte motorisk planering hos vuxna (20-27 år) och barn i nio till tio års ålder samt dess associationer med Motor Imagery (MI), den interna representationen av en handling. Detta genom att undersöka skillnader hos barn och vuxnas förmåga att planera motoriska handlingar i form av MI och end-state comfort effekter (ESC). ESC, ett begrepp kopplat till MI, innebär en prioritering av greppbekvämlighet i slutskedet av en handling istället för i början. För att undersöka MI togs responstider, tiden det tog att avge ett svar efter stimuli presenterats, ut från den mentala rotationsuppgiften Hand Laterality Judgement Task (HLJ). För att undersöka motorisk planering fick deltagarna utföra målinriktade förflyttningar av en pinne (semicirkulära pinntestet, SPT), ett test vilket inkluderar MI och ESC. I SPT manipuleras planeringsbehovet experimentellt då greppformationskraven varieras mellan försöken. Tiden från försökets början till initiering av handledsrörelse togs ut som ett mått på planering. Vidare undersöktes motorisk planering hos vuxna och barn samt dess associationer med exekutiva funktioner (inhibering, skiftning, planering och arbetsminne). I studien deltog 15 personer, varav sju stycken barn. En experimentell design tillämpades där tester av exekutiva funktioner, SPT, HLJ och en visuell mental rotationsuppgift utfördes. Resultaten fann att barn i nio till tio års ålder skiljde sig från vuxna gällande att barnen hade längre latenstid på SPT, responstid på HLJ samt lägre responsprecision på bägge test. Ytterligare en skillnad var att de vuxna uppvisade en association mellan MI och exekutiva funktionerna, vilket inte återfanns hos barnen. 

Abstract [en]

This study examined motor planning in adults (20-27 years) and children nine to ten years old and its associations with motor imagery (MI), the internal representation of an action. This by examining differences in children and adults' ability to plan motor actions in the form of MI and End-state comfort effects (ESC). ESC, a concept linked to MI, involves a prioritization of grip comfort in the end of an action instead of the beginning. To examine MI, response times, the time it took to respond after stimuli were presented, were taken out from the mental rotation task Hand Laterality Judgement Task (HLJ). To examine motor planning participants performed a peg movement task (Semi-Circular Peg task, SPT) that included aspects of MI and ESC. In the SPT, the need for planning is experimentally manipulated as grip formation demands varies across trials. The time from trial onset to wrist movement initation was extracted as a measure of planning. Furthermore motor planning was examined in adults and children and its associations with executive functions (inhibition, shifting, planning and working memory). In the study 15 people participated, of which seven were children. An experimental design was applied in which tests of executive functions, SPT, HLJ and a visual mental rotation task were performed. The results found that children aged nine to ten differed from adults in that the children had longer latency time on SPT, response time on HLJ and a lower response precision on both tests. Another difference was that the adults showed an association between MI and executive functions which was not found for in the children.

Place, publisher, year, edition, pages
2019. , p. 21
Keywords [sv]
motorisk planering, motor imagery, end-state comfort, exekutiva funktioner
National Category
Psychology
Identifiers
URN: urn:nbn:se:umu:diva-159346OAI: oai:DiVA.org:umu-159346DiVA, id: diva2:1318196
Educational program
Study Programme for University Diploma in Psychology
Supervisors
Examiners
Available from: 2019-05-29 Created: 2019-05-27 Last updated: 2019-05-29Bibliographically approved

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