Stability Switches and Hopf Bifurcation in a Coupled FitzHugh-Nagumo Neural System with Multiple Delays

Figure 4

Time histories with the varying delay 𝜏₁ (a) 𝜏₁=1.0 and (b) 𝜏₁=15.0 when the time delay and coupling weight are fixed as 𝜏₂=0, 𝑐=0.5, where the other system parameters have the fixed values 𝑎=0.33, 𝑏=1, and 𝛾=0.47.

(a)

(b)