A comparison of the reach-to-grasp movement between children and adults: a kinematic study.

摘要: In this study, the reach-to-grasp movement of 5-year-old children was compared to that adults. Participants were required reach out and grasp objects, with without on-line visual feedback. Object size distance covaried in a within-subjects design it found for both groups, grip formation kinematics affected by manipulation either variable. Although there are large number similarities, few differences between two groups emerge. For reaching component, revealed longer duration deceleration time lower maximum height wrist trajectory than children, vision no-vision condition, show maximal finger aperture larger Further, study able scale their according object when feedback during lacking. These findings suggest adopt different strategies adults planning on basis size, distance, predictability The results discussed terms neural mechanisms underlying hand action how these may not be fully developed age 5.