摘要:A four-dimensional neural network model with delay is investigated. With the help
of the theory of delay differential equation and Hopf bifurcation, the conditions of the equilibrium
undergoing Hopf bifurcation are worked out by choosing the delay as parameter. Applying the
normal form theory and the center manifold argument, we derive the explicit formulae for
determining the properties of the bifurcating periodic solutions. Numerical simulations are
performed to illustrate the analytical results.