Figure 4From: Comparison of two different approaches in the detection of intermittent cardiorespiratory coordination during night sleepNight sleep oscillations of PP and BAL in subject b05. The negative correlation between PP (gray line) and BAL (black line) is also revealed by the mirrored time course of both parameters. In subject b05 BAL and PP show similar oscillatory fluctuations during sleep which probably relate to the periodic succession of sleep stages.Back to article page