Before revision:  However, there is currently no principled way to implement such synapses in SCNs. Here ,  we extend the core SCN derivations to implement polynomial dynamical systems, from which also the need for such multiplicatively interacting synapses arises .
After revision:  However, there is currently no principled way to implement such synapses in SCNs. Here , we extend the spike coding framework to implement any polynomial dynamical system. This results in networks requiring multiplicative synapses, which we term the multiplicative spike coding network (mSCN) .