Table 2. Effect of drug administration on mfERG.

mfERG response amplitude (nV/deg2)
	N1	P1	PhNR
Before drug administration	−4.32±0.68	10.04±2.45	−4.20±1.04
TTX	−3.72±0.90	9.50±2.41	−3.28±1.16*
NMDA	−3.72±0.72	9.68±2.69	−2.92±1.34**

The mfERG amplitudes of different components along the visual streak before and after drug administration in control group are listed. (TTX – Tetrodotoxin; NMDA – N-methyl-D-asparatic acid; PhNR – photopic negative response) (*p<0.01; **p<0.001).