“…In the outer retina, gap junctions form electrical synapses among the axons of neighboring rods, between rods and cones, and among cones (Asteriti et al, 2014; DeVries et al, 2002; Tsukamoto et al, 2001). In the mammalian inner retina, the axon terminals of most or all subtypes of ON cone bipolar cells are coupled via gap junctions with the dendrites of AII amacrine cells (Cohen and Sterling, 1990; Marc et al, 2014; Veruki and Hartveit, 2002a) or via gap junctions directly between cone bipolar cells (Cohen and Sterling, 1990).…”