Table 1.

Simulation parameters.

Parameters	Value
Membrane time constant, τmem	100 ms
Spike trace decay time constant, τtrace	20 ms
Resting potential, vrest	−65 mV
Threshold voltage constant, θ0	−52 mV
Membrane reset potential, vreset	−60 mV
Refractory period, δref	5 ms
Adaptive threshold time constant, τtheta	107ms
Adaptive threshold voltage increment, θ+	0.05
Post-synaptic learning rate, ηpost	10−2 (MNIST)
	4 × 10−3 (F-MNIST)
Pre-synaptic learning rate, ηpre	10−4 (MNIST)
	4 × 10−5 (F-MNIST)
Normalization factor, wnorm	78.4
No. of excitatory neurons, nneurons	225 / 400 (MNIST)
	400 (F-MNIST)
Static inhibitory synaptic weight, wrecurrent	-120 (MNIST)
	−250 (F-MNIST)
A-STDP weight-percentile hyperparameter, α	98
A-STDP non-linearity hyperparameter, σ	2