JN Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
QUICK SEARCH:   [advanced]


     

J Neurophysiol (February 21, 2007). doi:10.1152/jn.01142.2006
This Article
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
97/4/3024    most recent
01142.2006v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Hsu, W.-L.
Right arrow Articles by Kiemel, T.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Hsu, W.-L.
Right arrow Articles by Kiemel, T.
Submitted on October 26, 2006
Accepted on February 17, 2007

Control and estimation of posture during quiet stance depends on multijoint coordination

Wei-Li Hsu1, John P Scholz2*, Gregor Schoner3, John J. Jeka4, and Tim Kiemel5

1 Biomechanics and Movement Sciences, University of Delaware, Newark, Delaware, United States
2 Physical Therapy, University of Delaware, Newark, Delaware, United States; Biomechanics and Movement Sciences, University of Delaware, Newark, Delaware, United States
3 Institut für Neuroinformatik, Ruhr-Universität Bochum, Bochum, Germany
4 Kinesiology, University of Maryland, College Park, Maryland, United States
5 Kinesiology, Universiity of Maryland, College Park, Maryland, United States

* To whom correspondence should be addressed. E-mail: jpscholz{at}udel.edu.

This study tested the hypotheses that all major joints along the longitudinal axis of the body are equally active during quiet standing and that their motions are coordinated to stabilize the spatial positions of the center of mass (CM) and head. Analyses of the effect of joint configuration variance on the stability of the CM and head positions were performed using the Uncontrolled Manifold (UCM) approach. Subjects stood quietly with arms folded across their chests for three five-minute trials each with and without vision. The UCM analysis revealed that the six joints examined were coordinated such that their combined variance had minimal effect on the CM and head positions. Removing vision led to a structuring of the resulting increased joint variance such that little of the increase affected stability of the CM and head positions. The results reveal a control strategy involving coordinated variations of most major joints to stabilize variables important to postural control during quiet stance.




This article has been cited by other articles:


Home page
 BrainHome page
W. Ilg, M. A. Giese, E. R. Gizewski, B. Schoch, and D. Timmann
The influence of focal cerebellar lesions on the control and adaptation of gait
Brain, October 3, 2008; (2008) awn246v1.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
W. Zhang, J. P. Scholz, V. M. Zatsiorsky, and M. L. Latash
What Do Synergies Do? Effects of Secondary Constraints on Multidigit Synergies in Accurate Force-Production Tasks
J Neurophysiol, February 1, 2008; 99(2): 500 - 513.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
L. B. Oude Nijhuis, B. R. Bloem, M. G. Carpenter, and J. H. J. Allum
Incorporating Voluntary Knee Flexion Into Nonanticipatory Balance Corrections
J Neurophysiol, November 1, 2007; 98(5): 3047 - 3059.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
Visit Other APS Journals Online
Copyright © 2007 by the The American Physiological Society.