Figure 7
From: On the cardiorespiratory coordination assessed by the photoplethysmography imaging technique
Color-coded coordigram. The degree of coordination of cardiorespiratory activity is color-coded from blue to yellow. Sections of the experiment marked with vertical white dashed lines and labelled on top of the graph. Red dashed lines indicate an example of a section with high degree of cardiorespiratory coordination (same as in Fig. 6). The white line (bottom) represents the time course of the coordination function, which approaches a value of approximately 1 in sections with enhanced coordination (>0.75), and which approaches zero in sections of uncoordinated oscillators. The coordination function allows us to transform the coordigrams into a time course (white line) and thereby map the degree of relative coordination between cardiac and respiratory activity. Thus, the white line depicts a typical scenario where there is temporal coordination that gradually disintegrates and reappears.
