On the origin of finger enslaving: control with referent coordinates and effects of visual feedback
Valters Abolins, А.А. Стремоухов, Caroline Walter, Mark L. Latash
Abstract
We report a consistent slow increase in finger enslaving (force production by noninstructed fingers) when visual feedback was presented on the force produced by either two instructed fingers or two noninstructed fingers of the hand. In contrast, force drifts could be in opposite directions depending on the visual feedback. We interpret enslaving and its drifts at the level of control with referent coordinates for the involved muscles, possibly reflecting spread of cortical excitation.
Topics & Concepts
Index fingerReferentMoment (physics)Control theory (sociology)Visual feedbackTorqueSynchronization (alternating current)PhysicsMathematicsComputer scienceCommunicationControl (management)PsychologyArtificial intelligenceClassical mechanicsTopology (electrical circuits)AnatomyMedicinePhilosophyCombinatoricsThermodynamicsLinguisticsMotor Control and AdaptationMuscle activation and electromyography studiesTactile and Sensory Interactions