Rapid on-line control to reaching is preserved in children with congenital spastic hemiplegia: evidence from double-step reaching performance
Hyde, Christian, Fuelscher, Ian, Enticott, Peter G., Reid, Susan M. and Williams, Jacqueline 2015, Rapid on-line control to reaching is preserved in children with congenital spastic hemiplegia: evidence from double-step reaching performance, Journal of child neurology, vol. 30, no. 9, pp. 1186-1191, doi: 10.1177/0883073814556310.
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Rapid on-line control to reaching is preserved in children with congenital spastic hemiplegia: evidence from double-step reaching performance
This study aimed to investigate the integrity of on-line control of reaching in congenital spastic hemiplegia in light of disparate evidence. Twelve children with and without spastic hemiplegia (11-17 years old) completed a double-step reaching task requiring them to reach and touch a target that remained stationary for most trials (viz nonjump trial) but unexpectedly displaced laterally at movement onset for a minority of trials (20%: known as jump trials). Although children with spastic hemiplegia were generally slower than age-matched controls, they could account for target perturbation at age-appropriate levels shown by a lack of interaction effect on movement time and nonsignificant group difference for time to reach trajectory correction on jump trials. Our data suggest that at a group level, on-line control of reaching may be age-appropriate in spastic hemiplegia. However, our data also highlight the need to experimentally acknowledge the considerable heterogeneity of the spastic hemiplegia population when investigating motor cognition.
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