Early gait development in human infants: Plasticity and clinical applications
Résumé
© 2015 Wiley Periodicals, Inc.In this paper we focus on how a developmental perspective on plasticity in the control of human movement can promote early therapy and improve gait acquisition in infants with developmental disabilities. Current knowledge about stepping development in healthy infants across the first year of life highlights strong plasticity, both in behavioral outcome and in underlying neuro-muscular activation. These data show that stepping, like other motor skills, emerges from the interaction between infant's maturation and the environment. This view is reinforced by showing that infants with different internal resources (like genetic disorder or neural tube defect) show unique developmental trajectories when supported on a treadmill, yet do respond. Moreover, we will show that their behavior can be improved by context manipulations (mostly sensory stimulation) or practice. Overall, plasticity in the neural, skeletal, and muscle tissues create new opportunities for optimizing early intervention by creatively tapping into the same developmental processes experienced by healthy infants.
Mots clés
infant
humans
plasticity
neuronal plasticity
early intervention
developmental disabilities
child development
walking
newborn
gait
movements
infant stepping
infant behavior
human walking
optic flow
reflex
myelomeningocele
phase-transitions
down-syndrome
muscle activation patterns
split-belt treadmill
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