Table 1. Peak amplitudes and decay time constants of the symmetric fall-off exponential fits to the correlation functions of the most-correlated input pair from spontaneous retinal wave recordings by Kerschensteiner and Wong [20] (values given as estimatestandard error). and denote the average firing rates of the two most correlated ON and OFF cells in each data set; other parameters are illustrated in Figure 1B.

Set		1	2	3	4	5	6
# ON cells		3	6	3	5	4	3
# OFF cells		3	2	2	2	2	5
	(Hz)	1.51	0.40	0.70	1.01	0.34	1.04
	(Hz2)
	(s)
	(s)
	(Hz)	2.94	0.63	0.80	2.44	2.06	2.48
	(Hz2)
	(s)
	(s)
	(Hz2)
	(s)
	(s)

The number of ON and OFF cells used in the simulated integrate-and-fire model are also listed for each data set. The OFF/ON correlation function is a reflection about 0 of the ON/OFF correlation function, such that , and .