"We present a minimal spiking network that can polychronize, that is,
exhibit reproducible time-locked but not synchronous firing patterns
with millisecond precision, as in synfire braids.
The network consists
of cortical spiking neurons with axonal conduction delays and spiketiming-
dependent plasticity (STDP); a ready-to-use MATLAB code is
It exhibits sleeplike oscillations, gamma (40 Hz) rhythms,
conversion of firing rates to spike timings, and other interesting regimes.
To our surprise, the number of
coexisting polychronous groups far exceeds the number of neurons in
the network, resulting in an unprecedented memory capacity of the
Izhikevich EM (2005) Polychronization: Computation with Spikes Neural Comput 18:245-282 [PubMed]