Monotone traveling waves for delayed neural field equations

Jian Fang (1) , Grégory Faye (2)

1 HIT Harbin Institute of Technology - Department of Mathematics
2 IMT - Institut de Mathématiques de Toulouse UMR5219

We study the existence of traveling wave solutions and spreading properties for single-layer delayed neural field equations. We focus on the case where the kinetic dynamics are of monos-table type and characterize the invasion speeds as a function of the asymptotic decay of the connectivity kernel. More precisely, we show that for exponentially bounded kernels the minimal speed of traveling waves exists and coincides with the spreading speed, which further can be explicitly characterized under a KPP type condition. We also investigate the case of algebraically decaying kernels where we prove the non-existence of traveling wave solutions and show the level sets of the solutions eventually locate in between two exponential functions of time. The uniqueness of traveling waves modulo translation is also obtained.

Domaines: Mathématiques [math]; Equations aux dérivées partielles [math.AP]

Jian Fang, Grégory Faye. Monotone traveling waves for delayed neural field equations. Mathematical Models and Methods in Applied Sciences, 2016, 26 (10), pp.1919 - 1954. ⟨10.1142/S0218202516500482⟩. ⟨hal-01682303⟩