Evidence for flexible motor costs in vertical arm movements: reduced gravity-related effort minimization under high accuracy constraints
Gabriel Poirier,
Damien De Filippis,
Cyril Sirandre
et al.
Abstract:The central nervous system (CNS) is thought to use motor strategies that minimize several criteria, such as end-point variability or effort, to plan optimal motor patterns. In the case of vertical arm movements, a large body of literature demonstrated that the brain uses a motor strategy that takes advantage of the mechanical effects of gravity to minimize muscle effort. Results from other studies suggested that the relative importance of each criterion may vary according to the task’s constraints. For example… Show more
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