Effector system mechanisms of coordination.

Current interest in motor learning has prompted researchers to develop models that explain the events or mechanisms underlying skill acquisition. For the most part these models have focused on sensory and perceptual mechanisms. This commentary presents a theoretical explanation of effector system mechanisms of coordination. Options are available in the central control centers and their peripheral components, tonic and phasic motor units. Implications for the methodology of motor learning are discussed as they relate to a paramount factor responsible for prompting individuals to select the most efficacious effector system mechanism option.