The heartbeat modes in modified Ikeda phase resetting model / 生物医学工程学杂志

ABSTRACT

In this paper are proposed four heartbeat models which correspond to two different positions of the ectopic pacemaker and two coupling styles of the sinus and ectopic pacemakers. The models computed are based on the modified Ikeda phase resetting model. Most of the heartbeat modes are periodic; they exhibit "Arnold's tongue" structure in parameter plane of perturbing frequency and strength. When the ectopic pacemaker is located in the ventricle, there are bistable dynamic modes. The abnormal hearbeat rhythms of bigeminy and trigeminy in clinical medicine have been observed when coupling strength is weaker in odd resetting or refractory time is longer in even resetting.