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Aged-related differences in the attentional cost of pointing movements
Isabelle Olivier1, Christina Rival, Chantal Bard
1Laboratoire Sport et Performance Motrice, Université Joseph Fourier, UFRAPS BP 53, 38041, Grenoble, France. isabelle@olivier@ujf-grenoble.fr
Abstract:
The aim of the present study was to analyze, in children aged 6, 8 and 11, the developmental trend of the attentional cost related to the programming and execution of pointing movements, using a dual-task paradigm. Our results showed that the attentional cost associated to the programming and the first phase of the pointing movement decreased non linearly with age, in particular a plateau between 8 and 11 was observed. This confirmed that the developmental trend of the control of pointing movements is characterized by a no monotonic evolution in which feedforward processes were predominantly used in the younger children, feedback processes were predominantly used in older children (since age 8), and one-line over feedforward processes were used in adults.