Research Article

Evidence for a Time-Invariant Phase Variable in Human Ankle Control

  • Robert D. Gregg mail,

    Affiliation: Departments of Mechanical Engineering and Bioengineering, University of Texas at Dallas, Richardson, Texas, United States of America

  • Elliott J. Rouse,

    Affiliation: Department of Media Arts and Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America

  • Levi J. Hargrove,

    Affiliations: Center for Bionic Medicine, Rehabilitation Institute of Chicago, Chicago, Illinois, United States of America, Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, Illinois, United States of America

  • Jonathon W. Sensinger

    Affiliation: Institute of Biomedical Engineering and Department of Electrical and Computer Engineering, University of New Brunswick, Fredericton, New Brunswick, Canada

  • Published: February 18, 2014
  • DOI: 10.1371/journal.pone.0089163

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