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      Dynamics of sparsely connected networks of excitatory and inhibitory spiking neurons.

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      Journal of computational neuroscience
      Springer Science and Business Media LLC

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          Abstract

          The dynamics of networks of sparsely connected excitatory and inhibitory integrate-and-fire neurons are studied analytically. The analysis reveals a rich repertoire of states, including synchronous states in which neurons fire regularly; asynchronous states with stationary global activity and very irregular individual cell activity; and states in which the global activity oscillates but individual cells fire irregularly, typically at rates lower than the global oscillation frequency. The network can switch between these states, provided the external frequency, or the balance between excitation and inhibition, is varied. Two types of network oscillations are observed. In the fast oscillatory state, the network frequency is almost fully controlled by the synaptic time scale. In the slow oscillatory state, the network frequency depends mostly on the membrane time constant. Finite size effects in the asynchronous state are also discussed.

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          Author and article information

          Journal
          J Comput Neurosci
          Journal of computational neuroscience
          Springer Science and Business Media LLC
          0929-5313
          0929-5313
          May 16 2000
          : 8
          : 3
          Affiliations
          [1 ] LPS, Ecole Normale Supérieure, Paris, France. brunel@lps.ens.fr
          Article
          10.1023/a:1008925309027
          10809012
          56af2d81-5ed3-4992-92cb-7de41eeb88d5

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