<p>Long-range synapses experience delayed spike synchrony.</p>

The top panel shows the average weight of the connections over development, while the bottom panel shows the density of spikes paired within ±50 ms at their respective . The white horizontal lines indicate the boundaries of the potentiation window of the inhibitory STDP rule.

Spike timing is measured locally at the synapse, mirroring the STDP weight update procedure. <b>(B)</b> The same data summed over development time and plotted as lines. The shaded area indicates the potentiation window of the inhibitory STDP rule. <b>(C)</b> The same data but using the global timing of spikes instead of the timing local to each synapse. <b>(D, E)</b> Relating synaptic distance, grouped into bins of width 0.4 mm, to spike coincidence across all networks in the final hour of simulation. <b>D</b>: Mean absolute spike-timing difference (|Δt|) in each bin. <b>E</b>: Fraction of spike pairs within the potentiation window in each bin.