Online control of reaching is impaired in adults with developmental coordination disorder- DCD

Abstract

Event Abstract Back to Event Online control of reaching is impaired in adults with developmental coordination disorder- DCD Ian Fuelscher1, Reannon Ivancic2, Chevelle Smalley2, Emra Oguzkaya2, Jacqueline Williams3 and Christian Hyde1* 1 Deakin University, School of Psychology, Australia 2 Victoria University, School of Social Sciences and Psychology, Australia 3 Victoria University, Institute of Sport, Exercise and Active Living and School of Sport and Exercise Science, Australia Developmental Coordination Disorder (DCD) is a serious disorder of movement that presents in the absence of identifiable neurological or intellectual deficit. Once considered transitory, there is compelling evidence that without targeted intervention, poor motor skill often persists into adulthood. Though the cause/s of the disorder continue to be debated, we recently demonstrated that children with DCD show a specific deficit in making fast corrections to movement following target displacement (viz online control: Hyde & Wilson, 2011a,b). This suggests possible immaturity at the level of the predictive modelling systems considered critical to online control. However, it is unclear how on-line control (and hence predictive modelling) may be affected in individuals whose motor difficulties persist into adulthood. Accordingly, we compared 7 young adults (aged 19- 25 years) with and without DCD on the double-step reaching task. Participants were required to reach and touch one of three possible targets. For most trials (80%) the target remained stationary throughout movement (non-jump trials), while for the remaining trials (20%) the target jumped to one of two peripheral locations at movement onset (jump-trials). As predicted, adults with DCD showed a reduced capacity for making fast online corrections to reaching shown by overall slower jump trial performance (yet relatively preserved non-jump reaching) and slower reaching trajectory correction: this pattern of results suggests difficulties using predictive estimates of limb position to control reaching. Further, it extends earlier work on children with DCD, suggesting that online control (and therefore predictive modelling) continues to be compromised beyond childhood. References Hyde, C., & Wilson, P. H. (2011a). Dissecting online control in Developmental Coordination Disorder: A kinematic analysis of double-step reaching. Brain and Cognition, 75, 232-241. Hyde, C., & Wilson, P. H. (2011b). Online control in children with Developmental Coordination Disorder: Chronometric analysis of double-step reaching performance. Child: Care, Health and Development, 37, 111-122. Keywords: developmental coordination disorder, double-step reaching task, online control, Predictive Modeling, Developmental Cognitive Neuroscience Conference: ACNS-2012 Australasian Cognitive Neuroscience Conference, Brisbane, Australia, 29 Nov - 2 Dec, 2012. Presentation Type: Oral Presentation Topic: Motor Citation: Fuelscher I, Ivancic R, Smalley C, Oguzkaya E, Williams J and Hyde C (2012). Online control of reaching is impaired in adults with developmental coordination disorder- DCD. Conference Abstract: ACNS-2012 Australasian Cognitive Neuroscience Conference. doi: 10.3389/conf.fnhum.2012.208.00038 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 25 Oct 2012; Published Online: 07 Nov 2012. * Correspondence: Dr. Christian Hyde, Deakin University, School of Psychology, Melbourne, Victoria, 3125, Australia, c.hyde@deakin.edu.au Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Ian Fuelscher Reannon Ivancic Chevelle Smalley Emra Oguzkaya Jacqueline Williams Christian Hyde Google Ian Fuelscher Reannon Ivancic Chevelle Smalley Emra Oguzkaya Jacqueline Williams Christian Hyde Google Scholar Ian Fuelscher Reannon Ivancic Chevelle Smalley Emra Oguzkaya Jacqueline Williams Christian Hyde PubMed Ian Fuelscher Reannon Ivancic Chevelle Smalley Emra Oguzkaya Jacqueline Williams Christian Hyde Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.