Controlling the movement of the arm to achieve a goal, such as reaching for an object, is
challenging because it requires coordinating many muscles acting on many joints. The …

Accurate control of body posture is enforced by a multitude of corrective actions operating
over a range of time scales. The earliest correction is the short-latency reflex (SLR) which …

The planning of visually guided reaches is accomplished by independent specification of
extent and direction. We investigated whether this separation of extent and direction …

How the CNS selects the appropriate muscle patterns to achieve a behavioral goal is an
open question. To gain insight into this process, we characterized the spatiotemporal …

This study provides a detailed analysis of disturbances in the kinematics and dynamics of
the acceleration phase of multijoint arm movements in six patients with chronic hemiparesis …

The nervous system controls the behavior of complex kinematically redundant
biomechanical systems. How it computes appropriate commands to generate movements is …

Trunk dynamics, including stiffness, mass and dam** were quantified during trunk
extension exertions with and without voluntary recruitment of antagonistic co-contraction …

This study compares the kinematic and kinetic characteristics of constrained and free upper
limb movements in eight subjects with chronic hemiparesis. Movements of the dominant and …

Accurately maintaining a fixed limb posture and quickly moving between postures underlies
both everyday skills, including holding and lifting a cup of coffee, and expert skills, such as …

We examined control of the hand's trajectory (direction and shape) and final equilibrium
position in horizontal planar arm movements by quantifying transfer of learned visuomotor …