Gamma Oscillations Facilitate Effective Learning in Excitatory-Inhibitory Balanced Neural Circuits

Table 1

Parameter used in neural circuit.

Description	Symbol	Value
Numbers of E, I neurons		2000, 400
Network connection probability		0.2 [26]
Background input connection number		400
Default firing rate of background input (per connection)		2.5 Hz
Augment factor		3.5
Axonal delay		1 ms [26]
Leakage potential		-70 mV [26]
Threshold potential		-50 mV [26]
Rest potential		-60 mV [26]
Membrane time constant for E, I neurons		20 ms, 10 ms [26]
Refractory period for E, I neurons		2 ms, 1 ms [26]
Reversal potential of E, I neurons		0 mV, -70 mV [26]
Input conductance from background to E, I neurons		0.05, 0.05; (normalized by leakage conductance)
Input conductance from E to E, I to E, E to I, I to I		0.1, 0.6,; 0.84 0.48; (normalized by leakage conductance)
Decay time constant of excitatory, inhibitory current		3 ms, 8 ms
Rising time constant of excitatory, inhibitory current		0.5 ms, 0.5 ms [26]
Facilitation time constant in STP		1500 ms [41]
Depression time constant in STP		200 ms [41]
Initial neural transmitter release probability in STP		0.2 [41]
Learning rate for LTP		0.001 [21]
Learning rate for LTD		0.001 [21]
Transmitter plasticity strength		[19]
Learning rate for heterosynaptic plasticity		0.01 [19]
Heterosynaptic plasticity parameter		0.1
Characteristic time constant for synaptic trace		20 ms [21]
Characteristic time constant for slow synaptic trace		100 ms [21]