Journal article
A kinematic analysis of visually-guided movement in Williams syndrome
DR Hocking, NJ Rinehart, JL McGinley, SA Moss, JL Bradshaw
Journal of the Neurological Sciences | Published : 2011
Abstract
Previous studies have reported that people with the neurodevelopmental disorder Williams syndrome exhibit difficulties with visuomotor control. In the current study, we examined the extent to which visuomotor deficits were associated with movement planning or feedback-based on-line control. We used a variant of the Fitts' reciprocal aiming task on a computerized touchscreen in adults with WS, IQ-matched individuals with Down syndrome (DS), and typically developing controls. By manipulating task difficulty both as a function of target size and amplitude, we were able to vary the requirements for accuracy to examine processes associated with dorsal visual stream and cerebellar functioning. Alt..
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Funding Acknowledgements
This study was supported by an Australian Postgraduate Award to the first author, and through funding from the Australian National Health and Medical Research Council and Neurosciences Victoria. The computerized touchscreen task was developed by the authors in collaboration with a team of researchers at Monash University including Dr Ashwini Nayate, Louise Corben, Nicole Papadopoulos, Associate Professor Nellie Georgiou-Karistianis and Andrew Patterson. We thank the Williams Syndrome Family Support Group (Victoria), Genetic Health Services Victoria, and the research support staff from the Australian Child to Adult Development (ACAD) study at Monash University for recruitment of WS and DS participants, and the families who continue to support our research.