Program

P.26 -- Poster, NCTP-41

Date: Tuesday, 2 August 2016

Time: 08h30 - 10h00

Suppression of Cardiac Alternans by Chaotic Attractors

Le Duy Manh (1), Pik-Yin Lai (2), C. K. Chan (3)

(1) Institute of Physics, VAST, 10 Dao Tan, Ba Dinh, Hanoi, Vietnam (2) Dept. of Physics, and Center for Complex Systems, National Central University, Chungli, Taiwan 320, R.O.C. (3) Institute of Physics, Academia Sinica, Taipei, Taiwan 115,R.O.C.

To achieve control in dynamical systems, one usually avoids the generation of chaos. However, an effective control of an unstable dynamical system can also be practically achieved by deliberately inducing chaos in the system if the induced chaotic attractors are confined in a very small region in the phase space. Here, we reveal that the recently proposed T+T- control for cardiac alternans suppression is due to the confined chaotic attractors mechanism by nonlinear dynamic analysis of the cardiac restitution model. These results are confirmed experimentally by detailed phase space portrait and transition dynamics measurements in whole heart experiments.

Presenter: Le Duy Manh