Table 1:

Parameters for the clustered and homogeneous networks with N LIF neurons. In the clustered network, the intra-cluster potentiation parameter values were J₊ = 5, 10, 20, 30, 40 for networks with N = 1, 2, 4, 6, 8 × 10³ neurons, respectively. In the homogeneous network, J₊=1.

Symbol	Description	Value
jEE	Mean E→E synaptic weight × $\sqrt{N}$	1.1 mV
jEI	Mean I→E synaptic weight × $\sqrt{N}$	5.0 mV
jIE	Mean E→I synaptic weight × $\sqrt{N}$	1.4 mV
jII	Mean I→I synaptic weight × $\sqrt{N}$	6.7 mV
jE0	Mean afferent synaptic weights to E neurons × $\sqrt{N}$	5.8 mV
jI0	Mean afferent synaptic weights to I neurons × $\sqrt{N}$	5.2 mV
J+	Potentiated intra-cluster E→E weights factor	see caption
$r_{ext}^E$	Average afferent rate to E neurons (baseline)	7 spks/s
$r_{ext}^I$	Average afferent rate to I neurons (baseline)	7 spks/s
$V_{thr}^E$	E neuron threshold potential	3.9 mV
$V_{thr}^I$	I neuron threshold potential	4.0 mV
Vreset	E and I neurons reset potential	0 mV
τm	E and I membrane time constant	20 ms
τref	Absolute refractory period	5 ms
τsyn	E and I synaptic time constant	4 ms
nbg	Background neurons fraction	10%
Nc	Average cluster size	100 neurons