Impact of oral melatonin on the electroretinogram cone response

Table 1 Routine ERG protocol

Period	Time since start, min	Flash intensity, log cd·s·m^-2	N of flashes	Interval, sec.	Ganzfeld background, cd·s·m^-2
Adaptation	0	0.84	10	1	32
	5	0.84	10	1	32
	10	0.84	10	1	32
	15	0.84	10	1	32
	20*	0.84	10	1	32
Testing		0.39	10	1	32
		0.10	10	1	32
		-0.21	10	1	32
		-0.61	10	1	32
		-0.90	10	1	32
		-1.10	10-20	1	32
		-1.45	10-20	1	32

* The response obtained at the 20^th minute represents the end of the light adaptation and the beginning of the testing period