Figure 8

Curve of the real and imaginary part of \(\pmb{z_{2}(t)}\) , \(\pmb{z_{1}(t)}\) for fractional-order CVHNN with ring structure ( 51 ). \(\alpha=0.9\), \(\gamma= 0.45 > \gamma_{0} = 0.3 \) in (b), (a), (c), (d) and \(\gamma= 0.45 > \gamma_{0} = 0.3 \) and real and imaginary parts of \(z_{1}(t)\) with \(\alpha=0.9\), \(\gamma = 0.2 < \gamma_{0} = 0.3 \) in (e), (f).