Table 1. Parameters used in the integrate-and-fire simulations.

Parameter	Description	Values explored for Figure 5 and 7	Values explored for Figures 3, 4, 6, 8
	Learning type	rSTDP, cSTDP	rSTDP, cSTDP for Figs. 3, 4, 6. rSTDP for Fig. 8.
A	Depression/Potentiation balance	0.9, 1.2, 3	0.9,1.2 for Figs. 3, 4, 6. 0.9 for Fig. 8.
D	Synaptic transmission delay	1, 15 ms	15 ms
τSTDP	STDP time constant	5, 10, 20 ms	20 ms
S	Noise level	1000, 2000 spikes/sec	2000 spikes/sec
τsyn	Synaptic time constant	5, 15 ms	15 ms
σinput	Input variance	100%,200%	100%
σnoise	Noise variance	100%, 200%	50%
W min, W max	Minimum/maximum weight	50 for Figs. 3,4,6; 20 in Fig. 5	50
F	Target firing rate, for homeostatic scaling	n/a	n/a for Figs. 3–4, 8; 20,80,120 spikes/sec for Fig. 6
	Relative strength of learning, for homeostatic scaling	n/a	n/a for Figs. 3–4, 8; 0.1,1,10,100 for Fig. 6
ζ	Relative strength of learning, for concurrent plasticity	n/a	n/a for Figs. 3–4, 8; −10,−1,−0.1, 0.1,1,10 for Fig. 6

Only parameters that were varied are shown in here; for other parameters that were fixed across simulations, see Methods.