Figure 4
SPPA graphics of simultaneous cardio-respiratory interactions. Poincaré plots of synchronised BBI and RESP time series refer to all five phases (NOR1, HYP1, HYP2, REOX1 and REOX2) of the animal experiment using data from one piglet. The grids represent rows and columns filled with data points (approximately inside the 4th till 9th row and column) within the Poincaré cloud. Areas with the highest amount of points are dark highlighted.