Figure 7.
Light-evoked synaptic input to OffT RGCs is sufficient to elicit high-frequency bursts of APs in OffS RGCs. A, Five consecutive responses of a representative OffS (top row) and OffT (bottom row) RGC to three combinations of light-evoked synaptic input: A1, somatic injection of the light-evoked synaptic postsynaptic current measured at ECl in an OffT RGC (“E”); A2, somatic injection of the sum of the two light-evoked synaptic inputs introduced separately in A1 and A3 (“E+I”). A3, Somatic injection of the light-evoked inhibitory postsynaptic conductance measured in an OffT RGC (“I”). B, Average peak firing rate as a function of cell and input type.