Dynamics of complex-valued fractional-order neural networks.
The dynamics of complex-valued fractional-order neuronal networks are investigated, focusing on stability, instability and Hopf bifurcations. Sufficient conditions for the asymptotic stability and instability of a steady state of the network are derived, based on the complex system parameters and the fractional order of the system, considering simplified neuronal connectivity structures (hub and ring). In some specific cases, it is possible to identify the critical values of the fractional order for which Hopf bifurcations may occur. Numerical simulations are presented to illustrate the theoretical findings and to investigate the stability of the limit cycles which appear due to Hopf bifurcations.
Institute e-Austria Timisoara, Bd. V. Parvan nr. 4, Room 045B, 300223, Timisoara, Romania; Department of Mathematics and Computer Science, West University of Timisoara, Romania. Electronic address: ekaslik@gmail.com.
Eva
E
Kaslik
Institute e-Austria Timisoara, Bd. V. Parvan nr. 4, Room 045B, 300223, Timisoara, Romania; Faculty of Applied Sciences, University Politehnica of Bucharest, Romania. Electronic address: nicola_rodica@yahoo.com.
Ileana Rodica
IR
Rădulescu
D000465:Algorithms; D016571:Neural Networks, Computer; D009474:Neurons / Q000502:physiology
Fractional order; Hopf bifurcation; Hub; Neural networks; Ring; Stability