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Visualization of the absolute values (vertical axis) of the wavelet coefficients (b–f) over time (horizontal axis given in frames/heartbeats) of the mixing curves (a) of the perfusion series features obtained by an optimal five component ICA. Note, how the movement component (f) exhibits larger coefficients in the lower wavelet levels (depth axis), while the signal energy for the LV (c), RV (d) and perfusion component (e) is located in the higher wavelet levels.
