Appearance of self-excitation and its description in a sarcomere-solution system

Owing to the complete description of chemical reactions in the sarcomere-solution system with the addition of adenosine triphosphate and the corresponding kinetic equations, the self-excitation in this system has been revealed by numerical methods. This self-excitation is manifested in the transition to chaotic states with the Lyapunov exponents λ > 0 and the subsequent development of unstable low-frequency pulsations.