CENTER FOR APPLIED MATHEMATICS AND THEORETICAL PHYSICS
UNIVERZA V MARIBORU UNIVERSITY OF MARIBOR
KREKOVA 2 SI-2000 MARIBOR SLOVENIA
Phone +(386) (2) 2355 350 and 2355 351 $\bullet$ Fax +(386) (2) 2355 360
Robnik@uni-mb.si $\bullet$ www.camtp.uni-mb.si
PROF.DR. MARKO ROBNIK, DIRECTOR

Seminarsko predavanje
Centra za uporabno matematiko in teoreticno fiziko

Cardiorespiratory Synchronization

Professor Dr. Aneta Stefanovska
Faculty of Electrical Engineering, University of Ljubljana

Abstract: The heart and respiration exert their activity in an oscillatory manner and their characteristic frequencies vary in time [1]. The modulation of frequencies bears the signatures of other cardiovascular functions and their demands for adaptation. In the resting but waking state in humans, this causes synchronization between the two systems to occur only episodically [2,3]. Recent studies have illuminated the way in which the pattern of phase synchronization changes during anaesthesia. They have shown that, with diminished nerve control, the two systems pass reversibly through a sequence of phase-synchronized states as the anaesthesia level changes [4], indicating that they can undergo phase transition like phenomena.

$[1]$ A. Stefanovska and M. Bracic, Contemp. Phys. 40, 31-55 (1999).
$[2]$ C. Sch$\ddot{\rm a}$fer et al, Nature392, 239-240 (1998).
$[3]$ M. Bracic Lotric and A. Stefanovska, Physica A 283, 451-461 (2000).
$[4]$ A. Stefanovska, H. Haken, P.V.E. McClintock, M. Hozic, F. Bajrovic and S. Ribaric, Phys. Rev. Lett. 85, 4831-4834 (2000).

Seminarsko predavanje bo v petek, 9. februarja 2001 ob 17:00 uri v seminrski sobi CAMTP, Krekova 2, pritlicje. Vljudno vabljeni vsi zainteresirani, tudi študenti.

Prof.Dr. Marko Robnik
-- Direktor CAMTP --