Chaotic dynamics of ventilatory flow in humans.
The present study provides further insights into the chaotic nature of the ventilatory behaviour in spontaneously breathing heal thy humans by applying the noise titration method t o ventilatory flow signals gathered in this s e t t i n g . In five subjects with normal breathing pattern and end-tidal CO2, the noise titration method gave a positive noise limit ranged from 6 to 43%. Our study shows that the noise titration technique does find chaos in the ventilatory behaviour o f healthy humans at rest, therefore opening the way to further investigations.
Wysocki
Marc
M
Laboratoire de Physiopathologie Respiratoire, Service de Pneumologie et R&#233;animation, Groupe Hospitalier Piti&#233;-Salp&#234;tri&#232;re, Assistance Publique-H&#244;pitaux de Paris and with Hamilton Medical AG, Via Nova, CH-7403 Rh&#228;zuns, Switzerland. Phone 00 41 79 660 62 30; fax: 00 41 79 660 60 20; e-mail: mwysocki@hamilton-medical.ch.
Fiamma
Marie-Noelle
MN
Straus
Christian
C
Sang Poon
Chi
C
Similowski
Thomas
T