Impact of Adaptation Currents on Synchronization of Coupled Exponential Integrate-and-Fire Neurons
Figure 8
Phase locking of aEIF pairs coupled with delays and heterogeneous synaptic strengths.
A–C: Change of phase difference given by equation (25), as a function of
for pairs of excitatory aEIF neurons coupled with different ratios of synaptic conductances
(
). Zero crossings with a negative slope indicate stable phase locking and are marked by black dots. Adaptation parameters of the neurons and PRCs are shown in the top row. D–I: Stable phase locked states of excitatory (D–F) and inhibitory (G–I) pairs as a function of the synaptic conductance ratio, for three different conduction delays
,
and
(black, brown, green). Unstable states are not shown for improved clarity. Dashed lines denote equal synaptic strengths, grey arrows indicate a continuous increase or decrease of
(mod
) for ratios
at which phase locked states do not exist (see main text).