Poisson-Like Neuronal Firing Due to Multiple Synfire Chains in Simultaneous Action

  • Raphael Ritz
  • Wulfram Gerstner
  • René Gaudoin
  • J. Leo van Hemmen


The irregularity of neuronal firing times is commonly interpreted as being due to noise6. Here, an alternative approach is taken to show that even in a completely deterministic model — without any noise — neuronal firing times might appear random. This can be achieved in an attractor model with spiking neurons where the limit cycles are complex spatio—temporal spiking patterns also called synfire chainsl. Simultaneous activation of several synfire chains can lead to arbitrarily complex-looking spike patterns at the single neuron level. In addition, a learning rule is presented that allows to store general spatio—temporal spiking patterns.


Neuronal Firing Spike Pattern Postsynaptic Spike Synfire Chain Layer Versus Pyramidal Neuron 
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  1. [1]
    Abeles, Moshe, Local cortical circuits. Springer-Verlag, Berlin Heidelberg New York, 1982.CrossRefGoogle Scholar
  2. [2]
    Gerstner, W. 1995 Time structure of the activity in neural network models. Phys. Rev. E, 51: 738–758.Google Scholar
  3. [3]
    Gerstner, W., Ritz, R., and van Hemmen, J.L. 1993 Why spikes? Hebbian learning and retrieval of time-resolved excitation patterns. Biol. Cybem., 69: 503–515.Google Scholar
  4. [4]
    Hebb, Donald O., The organization of behavior. Wiley, New York, 1949.Google Scholar
  5. [5]
    Markram, H. and Sakmann, B. 1995 Action potentials propagating back into dendrites triggers changes in efficacy of single-axon synapses between layer V pyramidal neurons. Soc. Neurosci. Abstr., 21: 2007.Google Scholar
  6. [6]
    Shadlen, M.N. and Newsome, W.T. 1994 Noise, neural codes and cortical organization. Cum. Opin. Neurobiol., 4: 569–579.Google Scholar
  7. [7]
    Stuart, G.J. and Sakmann, B. 1994 Active propagation of somatic action potentials into neocortical pyramidal cell dendrites. Nature, 367: 69–72.PubMedCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Raphael Ritz
    • 1
  • Wulfram Gerstner
    • 2
  • René Gaudoin
    • 3
  • J. Leo van Hemmen
    • 3
  1. 1.CNL, The Salk InstituteLa JollaUSA
  2. 2.Mantra-LAMI EPFL, IN-JCentre for Neuro-mimetic SystemsLausanneSwitzerland
  3. 3.Physik-Department der TU München, T35Garching bei MünchenGermany

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