Warning: A non-numeric value encountered in /home/public/export/export_atomxml.php on line 32

Warning: Cannot modify header information - headers already sent by (output started at /home/public/export/export_atomxml.php:32) in /home/public/includes/include.inc.php on line 5344

Warning: Cannot modify header information - headers already sent by (output started at /home/public/export/export_atomxml.php:32) in /home/public/search.php on line 1880
Jason Friedman's literature database Displays records where serial is equal to 29 2024-03-19T11:33:34+00:00 Jason Friedman's literature database write.to.jason@gmail.com https://refbase.nfshost.com/ Web Reference Database (http://refbase.sourceforge.net) https://refbase.nfshost.com/img/favicon.ico https://refbase.nfshost.com/img/logo.png https://refbase.nfshost.com/show.php?where=serial%20%3D%2029&exportType=xml&submit=Export&exportFormat=Atom%20XML 1 1 1 https://refbase.nfshost.com/show.php?record=29 <div xmlns="http://www.w3.org/1999/xhtml">Riemannian geometric approach to human arm dynamics, movement optimization, and invariance</div> 2012-12-31T14:27:42+00:00 2012-12-31T14:22:19+00:00 Jason Friedman
Biess, A., Flash, T., & Liebermann, D. G. (2011). Riemannian geometric approach to human arm dynamics, movement optimization, and invariance. Phys Rev E Stat Nonlin Soft Matter Phys, 83(3 Pt 1), 031927.
We present a generally covariant formulation of human arm dynamics and optimization principles in Riemannian configuration space. We extend the one-parameter family of mean-squared-derivative (MSD) cost functionals from Euclidean to Riemannian space, and we show that they are mathematically identical to the corresponding dynamic costs when formulated in a Riemannian space equipped with the kinetic energy metric. In particular, we derive the equivalence of the minimum-jerk and minimum-torque change models in this metric space. Solutions of the one-parameter family of MSD variational problems in Riemannian space are given by (reparameterized) geodesic paths, which correspond to movements with least muscular effort. Finally, movement invariants are derived from symmetries of the Riemannian manifold. We argue that the geometrical structure imposed on the arm's configuration space may provide insights into the emerging properties of the movements generated by the motor system.
Riemannian geometric approach to human arm dynamics, movement optimization, and invariance Biess, A. Flash, T. Liebermann, D.G. info:pmid/21517543 openurl:?ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fhttps%3A%2F%2Frefbase.nfshost.com%2F&genre=article&atitle=Riemannian%20geometric%20approach%20to%20human%20arm%20dynamics%2C%20movement%20optimization%2C%20and%20invariance&title=Physical%20Review.%20E%2C%20Statistical%2C%20Nonlinear%2C%20and%20Soft%20Matter%20Physics&stitle=Phys%20Rev%20E%20Stat%20Nonlin%20Soft%20Matter%20Phys&issn=1539-3755&date=2011&volume=83&issue=3%20Pt%201&spage=031927&aulast=Biess&aufirst=A.&au=Flash%2C%20T.&au=Liebermann%2C%20D.G.&id=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpubmed%2F21517543&sid=refbase%3AJF citekey:Biess_etal2011 Biess, A., Flash, T., & Liebermann, D. G. (2011). Riemannian geometric approach to human arm dynamics, movement optimization, and invariance. Phys Rev E Stat Nonlin Soft Matter Phys, 83(3 Pt 1), 031927. 2011 JournalArticle text Arm/*physiology Biomechanics Computer Simulation Humans Kinetics Male Models, Biological Models, Statistical Models, Theoretical *Movement Psychomotor Performance/*physiology Range of Motion, Articular/physiology Reaction Time/physiology Space Perception/*physiology Torque url:http://www.ncbi.nlm.nih.gov/pubmed/21517543 English 1539-3755 Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics 2011 83 3 Pt 1 031927