Paper in press: Surprising increases in muscle coactivation during visuomotor rotation.
In a recent study, we measured muscle activity and metabolic cost as subjects adapted to a visuomotor rotation. Surprisingly we observed increases in both muscle activity, coactivation, and metabolic cost, even though the perturbation was solely kinematic. Perhaps muscle coactivation is a fundamental strategy used in the presence of uncertainty, regardless of the underlying cause. The paper was just accepted and is in press at the Journal of Neurophysiology.