Dresden 2006 – wissenschaftliches Programm

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DY: Dynamik und Statistische Physik

DY 46: Poster

DY 46.79: Poster

Donnerstag, 30. März 2006, 16:00–18:00, P1

Age-Dependence of Correlations and Quasi-Periodicities in Heart Rate and Respiration during Sleep — •Aicko Yves Schumann¹, Jan W. Kantelhardt¹, and Thomas Penzel² — ¹Fachbereich Physik und Zentrum für Computational Nanoscience, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle (Saale), Germany — ²Klinikum für Innere Medizin, Klinikum der Universität Marburg, 35033 Marburg (Lahn)

In order to characterize the autonomic regulation in the human cardiovascular system we employ Detrended Fluctuation Analysis (DFA) and Phase Rectified Signal Averaging (PRSA). We study the age and sex dependence of the scaling behaviour of ECG (heartbeat intervals) and respiration (inspiration and expiration intervals) from 116 healty subjects during sleep. Sleep minimizes physical and mental disturbances which camouflage the intrinsic autonomous variabilities of interrest. Since sleep itself is not homogeneous we distinguish between REM and non-REM (light and deep) sleep stages and investigate their interrelation with ECG and respiration by comparing long-term correlations and additional quasi-periodicities. The results might be used to detect sleep stages based on ECG and respiration instead of more complicated brain recordings or to identify anomalous autonomic regulation in patients.