Phase synchronization and directional coupling between brain and heart during sleep

Phase synchronization and directional coupling between brain and heart during sleep

Phase synchronization is a measure of interaction between phases of two chaotic systems although their amplitudes are uncorrelated. Here, we investigate the synchronization between heart signals and EEG frequency bands (delta1, delta2, theta, alpha1, alpha2, sigma, beta and gamma) during sleep Stage...

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Bibliographische Detailangaben
Hauptverfasser: Abdullah, H., Maddage, N., Cvetkovic, D.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
directionality
ECG
EEG
phase synchronization
sleep
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Beschreibung
Zusammenfassung:Phase synchronization is a measure of interaction between phases of two chaotic systems although their amplitudes are uncorrelated. Here, we investigate the synchronization between heart signals and EEG frequency bands (delta1, delta2, theta, alpha1, alpha2, sigma, beta and gamma) during sleep Stage 1-4 and REM in the healthy and sleep apnoea by means of Synchronization Index (SI) and Directionality Index (d). The results showed that in both groups and all sleep stages, there was a strong unidirectional coupling from brain to heart.
DOI:10.1109/IECBES.2012.6498075