Figure 2From: Unified frame of reference improves inter-subject variability of seismocardiograms Frames of reference. The red asterisk marks the MC point and the green asterisk the AO point. The green and red circles are the two most distant points in the seismocardiogram. The red dashed line connects the MC and AO points, and the green dashed line connects the two most distant points in the seismocardiogram. The units are in milli-gs (1 mg = 9,81 mm/s2).Back to article page