FIG. 3.

Case E, different populations. The left panel shows Im(η^(1,2)), with the vertical lines identifying roots at υ₁ = −4.024 and υ₂ = −1.722. The right panel shows Re(η^(1,2)); values at the roots found above are indicated by horizontal lines, yielding ${\eta }_{\ast }^{(1)}=0.515$ and ${\eta }_{\ast }^{(2)}=-2.809$. Thus, we expect synchronization to occur at these values as η is either increased or decreased away from zero.