Figure 3From: The Impact of Time Delays on the Robustness of Biological Oscillators and the Effect of Bifurcations on the Inverse Problem(a) has a pair of complex conjugate eigenvalues with negative real parts. (b) The real part of this pair increases with increasing time delay Ï„. (c) A further increase in Ï„ eventually leads to positive real eigenvalues, as already demonstrated in Figure 2.Back to article page