Tim ValkUniversity of Groningen | RUG · Center for Human Movement Sciences
Tim Valk
Doctor of Philosophy
About
17
Publications
776
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41
Citations
Introduction
Academic teacher at the center for Human Movement Sciences in Groningen. In my research I study the behavior of the perception-action system during adaptive upper extremity reaching movements. In this, we use motion capture and EMG techniques to describe the movements performed, and to make inferences about underlying mechanisms.
Additional affiliations
September 2016 - September 2019
Education
September 2016 - September 2021
September 2014 - August 2016
University of Groningen
Field of study
- Human Movement Sciences
September 2011 - August 2014
University of Groningen
Field of study
- Human Movement Sciences
Publications
Publications (17)
An essential step in uncontrolled manifold analysis is creating a linear model that relates changes in elemental variables to changes in performance variables. Such linear models are usually created by means of an analytical method. However, a multiple regression analysis is also suggested. Whereas the analytical method includes only averages of jo...
When performing a goal-directed action with a tool, it is generally assumed that the point of control of the action system is displaced from the hand to the tool, implying that body and tool function as one system. Studies of how actions with tools are performed have been limited to studying either end-effector kinematics or joint-angle coordinatio...
During rhythmic pointing movements, degrees of freedom (DOF) in the human action system—such as joint-angles in the arm—are assumed to covary to stabilise end-effector movement, e.g. index finger. In this paper, it is suggested that the end-effector movement and the coordination of DOF are reciprocally related in synergies that link DOF so as to pr...
Background
Users of myoelectric controlled assistive technology (AT) for upper extremities experience difficulties in controlling this technology in daily life, partly because the control is non-intuitive. Making the control of myoelectric AT intuitive may resolve the experienced difficulties. The present paper was inspired by the suggestion that i...
