Kinematic analysis of the human wrist during pointing tasks.

Experimental Brain Research
Domenico CampoloFlavio Keller

Abstract

In this work, we tested the hypothesis that intrinsic kinematic constraints such as Donders' law are adopted by the brain to solve the redundancy in pointing at targets with the wrist. Ten healthy subjects were asked to point at visual targets displayed on a monitor with the three dof of the wrist. Three-dimensional rotation vectors were derived from the orientation of the wrist acquired during the execution of the motor task and numerically fitted to a quadratic surface to test Donders' law. The thickness of the Donders' surfaces, i.e., the deviation from the best fitting surface, ranged between 1 degree and 2 degrees, for angular excursions from +/-15 degrees to +/-30 degrees. The results support the hypothesis under test, in particular: (a) Two-dimensional thick surfaces may represent a constraint for wrist kinematics, and (b) inter-subject differences in motor strategies can be appreciated in terms of curvature of the Donders' surfaces.

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Citations

Jan 10, 2012·Computer Methods in Biomechanics and Biomedical Engineering·Domenico Campolo
Jun 1, 2012·Journal of Neurophysiology·Domenico FormicaHermano I Krebs
Jun 7, 2011·Experimental Brain Research·Domenico CampoloEtienne Burdet
Aug 28, 2014·Journal of Strength and Conditioning Research·David WhitesideGrant C Goulet
Apr 12, 2016·Frontiers in Human Neuroscience·Steven EwartCharles Capaday
Jul 25, 2014·Journal of Neuroscience Methods·Domenico CampoloLorenzo Masia
Apr 22, 2014·Journal of Biomechanics·Allan W Peaden, Steven K Charles
Jun 2, 2016·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Kyungbin ParkSang Hoon Kang
Dec 19, 2017·Frontiers in Neurorobotics·Paolo Tommasino, Domenico Campolo
Jun 28, 2018·Journal of Neurophysiology·Garrett R DormanSteven K Charles
Dec 23, 2016·Bioinspiration & Biomimetics·Paolo Tommasino, Domenico Campolo
Feb 11, 2020·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Isidro de Jesús Sánchez-ArceEmmanuel Santiago Durazo-Romero

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