A Circadian Clock in the Retina Regulates RodCone Gap ...
· This is because although rodcone gap junctions are strongly uncoupled by the circadian clockmediated increase in cone D 4 R activation in the day, cone D 4 Rs are NOT activated at night in the dark (Ribelayga et al., 2002, 2008), Thus, together with previous findings concerning circadian clock regulation of the melatonin/dopamine system (Mangel, 2001; .