(A) Example traces of OFFsA RGCs to 100% negative contrast steps in dynamic clamp recordings at four different concentrations of 49TTX.
(B, C, D) Spike count during the contrast step conductance (B, p = 0.008, ANOVA), membrane voltage (C, p = 0.76, ANOVA), and input resistance (D, p = 0.32, ANOVA) as a function of 49TTX concentration.