The authors applied the modified method of Bagolini's et al., who were the first to make use of the technique based on standard stimulation of "pattern" type for simultaneous macular and perimacular ERG registration. UTAS E-1000 system was applied for stimulation and registration of bioelectrical signals. 26 eyes in 16 healthy patients, aged 18 to 41 years (mean 29.5), have been examined. The anterior and posterior segment of all examined eyes was not changed, function of both eyes was normal. The mean values of macular and perimacular potentials and M/P value, that is proportion of macular and perimacular potential and standard deviations have been determined. The examples of pathologically changed macular and perimacular potentials in some diseases of central retina have been presented.