Fig. 2

A time series of membrane potentials and stimuli of the noiseless RGC model. a, b The stimulating current and membrane potentials in A = 12 μA, c, d the stimulating current and membrane potentials in A = 15 μA, e, f the stimulating current and membrane potentials in A = 18 μA. g The black arrow points to the current amplitude of the subthreshold signal we take