Abundant degrees of freedom are not a problem

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The problem of motor redundancy has been one of the fundamental, albeit elusive, problems in motor control. Traditionally, it has been viewed as a computational problem for the brain, solved with either optimization methods or by introducing additional constraints to motor tasks. This review suggests that the problem was wrongly formulated, and that the abundant degrees of freedom are not to be eliminated but used to ensure dynamic stability of motor performance, which is vital given the unpredictable intrinsic states and external forces. The idea of synergies as mechanisms ensuring action stability is introduced based on the uncontrolled manifold hypothesis and the theory of control with spatial referent coordinates. The importance of controlled stability is illustrated with the phenomena of anticipatory synergy adjustments. This approach is productive for both basic and applied fields as illustrated, in particular, by changes in motor synergies with neurological disorder and exercise.

Original languageEnglish (US)
Pages (from-to)64-72
Number of pages9
JournalKinesiology Review
Volume7
Issue number1
DOIs
StatePublished - Feb 1 2018

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Nervous System Diseases
Brain

All Science Journal Classification (ASJC) codes

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Public Health, Environmental and Occupational Health

Cite this

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Abundant degrees of freedom are not a problem. / Latash, Mark.

In: Kinesiology Review, Vol. 7, No. 1, 01.02.2018, p. 64-72.

Research output: Contribution to journalArticle

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