@inproceedings{205b41b9130f465e9cb2ea09a2621bdb,
title = "Dynamic instabilities induced through altered visual cues and their relationship to postural response latencies",
abstract = "Mathematical models predict limit cycle oscillations (LCOs) in postural sway when the combination of neuromuscular time-delay and feedback gains are excessively large. LCOs have been observed in the standing posture of various populations known to have longer time-delays including concussed young adults and adults with neuromuscular impairment such as multiple sclerosis (MS) and Parkinsons disease (PD) but not healthy controls. However, the relationship between feedback gain and time-delay that leads to these LCOs has yet to be explored experimentally. In this study, we examine the relationship between the time-delay of healthy adults and the onset of LCOs under altered visual feedback. We find that there is an inversely proportional correlation between feedback gain and intrinsic neuromuscular time-delay for which LCOs arise. This finding has implications for the assessment and diagnosis of neuromuscular related balance issues through a simple and invasive protocol similar to that used in this study.",
author = "Chagdes, \{James R.\} and Liddy, \{Joshua J.\} and Huber, \{Jessica E.\} and Zelaznik, \{Howard N.\} and Shirley Rietdyk and Arvind Raman and Haddad, \{Jeffrey M.\}",
note = "Publisher Copyright: Copyright {\textcopyright} 2016 by ASME.; ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2016 ; Conference date: 21-08-2016 Through 24-08-2016",
year = "2016",
doi = "10.1115/DETC201660248",
language = "English",
series = "Proceedings of the ASME Design Engineering Technical Conference",
publisher = "American Society of Mechanical Engineers (ASME)",
booktitle = "12th International Conference on Multibody Systems, Nonlinear Dynamics, and Control",
address = "United States",
}