Figure 6From: Stability and Hopf bifurcation analysis of fractional-order complex-valued neural networks with time delays Phase portrait of the real and imaginary parts of \(\pmb{z_{1}(t)}\) , \(\pmb{z_{2}(t)}\) , \(\pmb{z_{3}(t)}\) and \(\pmb{z_{4}(t)}\) for fractional-order CVHNN with hub structure ( 50 ) with \(\pmb{\alpha=0.9}\) and \(\pmb{\gamma = 0.45 > \gamma_{0} = 0.32}\) . Back to article page