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Fig. 3 | BioMedical Engineering OnLine

Fig. 3

From: Increased cardiorespiratory synchronization evoked by a breath controller based on heartbeat detection

Fig. 3

Typical cardiorespiratory synchrogram of one subject. Typical cardiorespiratory synchrograms of one subject for spontaneous breathing (a), the 2/2 breathing pattern (b), and the 4/4 breathing pattern (c). Synchronization, marked with cross symbols, is characterized by the arrangement of the wrapped phase in horizontal lines. In this subject, 4:1 phase synchronization was detected for both 2/2 breathing pattern and spontaneous breathing, but the synchronization epoch in 2/2 breathing pattern obviously longer. 8:1 phase synchronization was detected for the 4/4 breathing pattern

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