Nonlinear Dynamics and Chaos in Fractional-Order Hopfield Neural Networks with Delay

Figure 2

(a) Double-scroll chaotic attractor when 𝛼=0.92 with the initial condition (0.4,0.6)^𝑇 for 𝑡∈[−1,0]; (b) periodic orbit when 𝛼=0.99 with the initial condition (0.4,0.6)^𝑇 for 𝑡∈[−1,0].

(a)

(b)