Dimensionality reduction in control and coordination of the human hand

IEEE Trans Biomed Eng. 2010 Feb;57(2):284-95. doi: 10.1109/TBME.2009.2032532. Epub 2009 Sep 29.

Abstract

The concept of kinematic synergies is proposed to address the dimensionality reduction problem in control and coordination of the human hand. This paper develops a method for extracting kinematic synergies from joint-angular-velocity profiles of hand movements. Decomposition of a limited set of synergies from numerous movements is a complex optimization problem. This paper splits the decomposition process into two stages. The first stage is to extract synergies from rapid movement tasks using singular value decomposition (SVD). A bank of template functions is then created from shifted versions of the extracted synergies. The second stage is to find weights and onset times of the synergies based on l(1) -minimization, whose solutions provide sparse representations of hand movements using synergies.

MeSH terms

  • Algorithms
  • Biomechanical Phenomena / physiology*
  • Hand / physiology*
  • Hand Joints / physiology
  • Hand Strength / physiology
  • Humans
  • Models, Biological
  • Range of Motion, Articular
  • Signal Processing, Computer-Assisted