Dynamical relaying can yield zero time lag neuronal synchrony despite long conduction delays

R Vicente, LL Gollo, CR Mirasso… - Proceedings of the …, 2008 - National Acad Sciences
Proceedings of the National Academy of Sciences, 2008National Acad Sciences
Multielectrode recordings have revealed zero time lag synchronization among remote
cerebral cortical areas. However, the axonal conduction delays among such distant regions
can amount to several tens of milliseconds. It is still unclear which mechanism is giving rise
to isochronous discharge of widely distributed neurons, despite such latencies. Here, we
investigate the synchronization properties of a simple network motif and found that, even in
the presence of large axonal conduction delays, distant neuronal populations self-organize …
Multielectrode recordings have revealed zero time lag synchronization among remote cerebral cortical areas. However, the axonal conduction delays among such distant regions can amount to several tens of milliseconds. It is still unclear which mechanism is giving rise to isochronous discharge of widely distributed neurons, despite such latencies. Here, we investigate the synchronization properties of a simple network motif and found that, even in the presence of large axonal conduction delays, distant neuronal populations self-organize into lag-free oscillations. According to our results, cortico–cortical association fibers and certain cortico–thalamo–cortical loops represent ideal circuits to circumvent the phase shifts and time lags associated with conduction delays.
National Acad Sciences
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