Optical imaging studies of the generation of atrial arrythmia evoked by abnormal automatism

点击翻译按钮获取中文摘要

Using optical imaging methods together with voltage-sensitive dye, we analyzed spatio-temporal patterns of excitation spread during the tachycardia-like excitation evoked by electrical stimulation in the isolated rat atrium. Event-to-event variations, which seem to result from physiologically trivial difference(s) of the initial conditions,were always observed among the excitation spread patterns. Based on these results, we consider that tachycardia-like excitation is an example of a spatio-temporal chaos in the physiological system.