Figure 2
From: Skeletal Muscle Pump Drives Control of Cardiovascular and Postural Systems
(a) An example of simultaneously recorded physiological signals. Systolic blood pressure in mmHg (top), rectified calf electromyography in a.u. (middle), and resultant center of pressure in mm (bottom) during last 4 minutes of quiet standing from one participant (M, age: 28 years, weight: 86 kg, height:177 cm). (b) Convergence plot of different causal activities. EMG↔SBP (top), SBP↔COPr (middle) and EMG↔COPr (bottom) computed between the signals in Fig. 2a. The figure indicates EMG → SBP, COPr → SBP, and EMG → COPr to be the dominant direction of causal information flow.
