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

Figure 6

The one-dimensional bifurcation diagram in (a) (𝜏₁,𝑢₁)-plane, (b) (𝜏₁,𝑢₂)-plane, (c) (𝜏₁,𝑢₃)-plane, and (d) (𝜏₁,𝑢₄)-plane for the fixed delay 𝜏₂=0 and coupling weights 𝑐=0.8.

(a)

(b)

(c)

(d)