Posture control is seen as a multi-loop system in which a number of specialized feedback sensors contribute to the generation of commands. Proprioceptive sensors contribute to the generation of commands. Proprioceptive sensors contribute to the generation of commands. Proprioceptive sensors and neural processing at the lowest levels enable crude but fast acting responses based on information from body centered frames. "Inertial" sensors and higher center processing provide more accurate, adaptable control but with longer processing delays. Hence, posture control is a highly non-stationary process in which responses to transient disturbances are initiated at the lowest levels. Allocation on control then radiates upwards to the higher centers where successive corrections based on more complete information, fine tune the initial responses.
Abstract