Centre of Pressure (COP) metrics and cross-correlation analysis between COP and electromyogram (EMG) obtained from the two model structures in comparison with experimental data reported in the literature.

<p><i>Model 1</i> is the postural control model without reciprocal inhibition, whereas <i>Model 2</i> is the complete postural control model (see <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1003944#s4" target="_blank">Methods</a> for details concerning model structures). Data are expressed as Mean Standard Deviation. is defined as the frequency at which 50% of the total power of the COP is confined (see Data Analysis). Values of were measured as the peak values of the cross-correlation functions between COP and the EMGs of the Triceps Surae (TS) muscles (i.e., SO, MG, and LG). Data from <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1003944#pcbi.1003944-Gatev1" target="_blank">[9]</a>, <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1003944#pcbi.1003944-Prieto1" target="_blank">[42]</a>, <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1003944#pcbi.1003944-Masani2" target="_blank">[43]</a> were obtained from healthy young subjects standing on a stable surface without visual feedback, while <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1003944#pcbi.1003944-Baloh1" target="_blank">[3]</a> provided data from vestibular loss patients standing on a stable surface without visual feedback.</p><p>Centre of Pressure (COP) metrics and cross-correlation analysis between COP and electromyogram (EMG) obtained from the two model structures in comparison with experimental data reported in the literature.