Quantification of intrinsic and reflexive properties during multijoint arm posture

Journal of Neuroscience Methods
Erwin de VlugtFrans C T van der Helm

Abstract

This study estimates intrinsic and reflexive properties of single- and two-joint muscles acting around the human shoulder, elbow and wrist joint during posture maintenance. External force disturbances were applied to the hand while subjects (n = 5) were instructed to minimize their hand displacement amplitude in a horizontal plane. To examine how the nervous system modifies intrinsic and reflexive muscle properties, we varied external damping, disturbance power and arm configuration. A new identification method is introduced to quantify a large set of model parameters describing intrinsic, activation and reflexive properties, the latter representing afferent feedback gains from muscle spindles and Golgi tendon organs. Consistent estimates were found for the gains of the different types of reflex pathways. The results showed that intrinsic visco-elasticity of shoulder muscles was minimal, whereas reflexive feedback was largest compared to the elbow and wrist joint. Intrinsic and reflexive properties of the two-joint shoulder-elbow muscles were larger than the two-joint elbow-wrist muscles. Contrasting to previous single-joint studies, the reflex gains did not vary with the experimental conditions. It is concluded that during red...Continue Reading

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Citations

Feb 5, 2011·Computer Methods in Biomechanics and Biomedical Engineering·Jonas ÖsthRiender Happee
Feb 26, 2013·Journal of Neuroengineering and Rehabilitation·Tjitske Anke BoonstraHerman van der Kooij
Jul 29, 2010·Journal of Neuroengineering and Rehabilitation·Erwin de VlugtCarel G M Meskers
Aug 8, 2012·Biological cybernetics·Ilona J PinterJeroen B J Smeets
Apr 13, 2010·Archives of Physical Medicine and Rehabilitation·Josien C van den NoortJaap Harlaar
Nov 14, 2013·Journal of the American Medical Directors Association·Denise EngelhartHerman van der Kooij
Jul 14, 2007·Muscle & Nerve·Samir G SanganiBrian D Schmit
Sep 18, 2013·IEEE Transactions on Cybernetics·Joost VenrooijHeinrich H Bulthoff
Dec 27, 2012·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Xin HeNing Lan
Sep 10, 2013·IEEE Transactions on Cybernetics·Joost VenrooijHeinrich H Bulthoff
May 9, 2014·IEEE Transactions on Haptics·J G W WildenbeestH Boessenkool
May 9, 2015·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Winfred MuggeFrans Van der Helm
Sep 2, 2014·Gait & Posture·Jonas ÖsthKarin Brolin
Sep 17, 2014·Experimental Brain Research·Riender HappeeBart van Vliet
Dec 9, 2015·Scientific Reports·Femke E van BeekAstrid M L Kappers
Sep 1, 2017·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Anna PagelHeike Vallery
Apr 27, 2007·Journal of Neurophysiology·Herman van der Kooij, Erwin de Vlugt
May 31, 2017·European Journal of Neurology : the Official Journal of the European Federation of Neurological Societies·J C van den NoortJ Harlaar

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