Recent studies provide further support for the hypothesis that spatial representations of limb
position, target locations, and potential motor actions are expressed in the neuronal activity …

Upper-limb impairment after stroke is caused by weakness, loss of individual joint control,
spasticity, and abnormal synergies. Upper-limb movement frequently involves abnormal …

Nonlinear dynamical systems have been used in many disciplines to model complex
behaviors, including biological motor control, robotics, perception, economics, traffic …

To manipulate objects or to use tools we must compensate for any forces arising from
interaction with the physical environment. Recent studies indicate that this compensation is …

Cocontraction (the simultaneous activation of antagonist muscles around a joint) provides
the nervous system with a way to adapt the mechanical properties of the limb to changing …

This study compared adaptation in novel force fields where trajectories were initially either
stable or unstable to elucidate the processes of learning novel skills and adapting to new …

In the field of motor control, two hypotheses have been controversial: whether the brain
acquires internal models that generate accurate motor commands, or whether the brain …

We propose a new model of motor learning to explain the exceptional dexterity and rapid
adaptation to change, which characterize human motor control. It is based on the brain …

Human arm viscoelasticity is important in stabilizing posture, movement, and in interacting
with objects. Viscoelastic spatial characteristics are usually indexed by the size, shape, and …

This paper presents a novel variable impedance control method for a human-robot
cooperative task. An impedance control system based on a positioning control of a robot …