A central back-coupling hypothesis on the organization of motor synergies: A physical metaphor and a neural model

Mark L. Latash, Jae Kun Shim, Andrei V. Smilga, Vladimir M. Zatsiorsky

Research output: Contribution to journalArticlepeer-review

111 Scopus citations

Abstract

We offer a hypothesis on the organization of multi-effector motor synergies and illustrate it with the task of force production with a set of fingers. A physical metaphor a leaking bucket is analyzed to demonstrate that an inanimate structure can show apparent error compensation among its elements. A neural model is developed using tunable back-coupling loops as means of assuring error compensation in a task-specific way. The model demonstrates non-trivial features of multi-finger interaction such as delayed emergence of force stabilizing synergies and simultaneous stabilization of the total force and total moment produced by the fingers. The hypothesis suggests that neurophysiological structures involving short-latency feedback may play a central role in the formation of motor synergies.

Original languageEnglish (US)
Pages (from-to)186-191
Number of pages6
JournalBiological Cybernetics
Volume92
Issue number3
DOIs
StatePublished - Mar 2005

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Computer Science(all)

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