Before revision:  The inclusion of electrical coupling generally implies the emergence of a supercritical Hopf bifurcation and, hence, neuronal synchrony. This dramatically transforms the Cusp scenario into a bifurcation scenario characterized by three codimension-2 points (Cusp, Takens-Bogdanov, and Saddle-Node Separatrix Loop), which  is generic for the dynamics of heterogeneous QIF networks with both chemical and electrical  coupling.
After revision:  The inclusion of electrical coupling generally implies the emergence of a supercritical Hopf bifurcation . This transforms the Cusp scenario into a bifurcation scenario characterized by three codimension-2 points (Cusp, Takens-Bogdanov, and Saddle-Node Separatrix Loop), which is generic for the dynamics of heterogeneous QIF networks with both chemical and electrical coupling.