%A Olmi,Simona %A Politi,Antonio %A Torcini,Alessandro %D 2014 %J Frontiers in Computational Neuroscience %C %F %G English %K splay states,synchronization,neural networks,Floquet spectrum,pulse coupled neurons,Linear stability analisys %Q %R 10.3389/fncom.2014.00008 %W %L %M %P %7 %8 2014-February-04 %9 Original Research %+ Dr Alessandro Torcini,Consiglio Nazionale delle Ricerche,Istituto dei Sistemi Complessi,via Madonna del Piano, 10,Sesto Fiorentino,50019,Italy,torcini@gmail.com %# %! Linear stability in networks of pulse-coupled neurons %* %< %T Linear stability in networks of pulse-coupled neurons %U https://www.frontiersin.org/articles/10.3389/fncom.2014.00008 %V 8 %0 JOURNAL ARTICLE %@ 1662-5188 %X In a first step toward the comprehension of neural activity, one should focus on the stability of the possible dynamical states. Even the characterization of an idealized regime, such as that of a perfectly periodic spiking activity, reveals unexpected difficulties. In this paper we discuss a general approach to linear stability of pulse-coupled neural networks for generic phase-response curves and post-synaptic response functions. In particular, we present: (1) a mean-field approach developed under the hypothesis of an infinite network and small synaptic conductances; (2) a “microscopic” approach which applies to finite but large networks. As a result, we find that there exist two classes of perturbations: those which are perfectly described by the mean-field approach and those which are subject to finite-size corrections, irrespective of the network size. The analysis of perfectly regular, asynchronous, states reveals that their stability depends crucially on the smoothness of both the phase-response curve and the transmitted post-synaptic pulse. Numerical simulations suggest that this scenario extends to systems that are not covered by the perturbative approach. Altogether, we have described a series of tools for the stability analysis of various dynamical regimes of generic pulse-coupled oscillators, going beyond those that are currently invoked in the literature.