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. Author manuscript; available in PMC: 2013 Jun 1.
Published in final edited form as: Gait Posture. 2012 Apr 3;36(2):254–259. doi: 10.1016/j.gaitpost.2012.03.002

Figure 3. Relationship between respiratory flow and anterioposterior (AP) center-of-pressure (COP) dynamics during eyes-closed standing.

Figure 3

The dominant oscillatory mode of respiratory flow (black line) plotted against the corresponding oscillatory mode of AP COP fluctuations (gray line) for a healthy control (A) and subject with chronic stroke (B). A posturo-respiratory synchronization value of 0.22 for the subject with stroke, as compared to 0.10 for the healthy control, indicates stronger synchronization; i.e., greater regularity associated with the instantaneous phase-shift between signals over time.