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Category

Motor Control

Document Type

Paper

Abstract

This talk will explore the neuromotor control of challenging locomotor tasks using the concept of muscle synergies: modular sets of activation patterns that are common to functionally similar muscle groups and may exist to simplify movement control. I will argue that the structure of these synergies is largely conserved across different walking and running speeds, as well as in response to internal (e.g. aging) or external (e.g. uneven terrain) perturbations. The nervous system finely tunes the linear and nonlinear time characteristics of muscle synergies to cope with disturbances, rather than adjusting the relative muscle contributions, regardless of the nature of the perturbation. This suggests the existence of a common neural mechanism for managing various locomotor situations.

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