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- M. Stimberg, T. Hoch, and
K. Obermayer. The effect of background noise on the precision of pulse
packet propagation in feed-forward networks.
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Neurocomputing, 70:1824-1828, 2007.
Evidence suggests precise spike timing plays a functional role in
cortical information processing. However, it is still a matter of debate
whether such precision can be achieved in the presence of ongoing synaptic
background activity. We investigate this question by modeling a feed-forward
network of Hodgkin-Huxley neurons. Extending the basic model, we additionally
include variable synaptic delays. We find that suprathreshold waves of
synchronous activity propagate through the network reliably and with
submillisecond precision. On the other hand, background activity allows
slightly subthreshold activity to propagate reliably as well, but not with
high temporal precision.
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