SPECTRAL SENSITIVITY OF MONOCHROMATIC ERG C-WAVE OF CHICKEN UNDER COLOR ADAPTATION

The spectral sensitivity of the ERG c-wave was studied in the chicken under yellow or red light adaptation of various intensities, ie, 1, 3, 4 and 5 W/m2 at the corneal surface in the former, and 3, 4 and 5 W/m 2 in the tatter. The peak wavelength of the spectral sensitivity curve of the c-wave amplitude under both yellow and red tight adaptations w as 520 or 540 nm, being shorter as compared with the peak wavelength ( 560 nm) under white tight adaptation (Fukuda, 1989). Under the yellow or red light adaptation the sensitivity of the c-wave was suppressed a t a range of longer wavelength, suggesting a possible isolation of the blue and green cone-driven c-wave responses. The peak (520 or 540 nm) and the shoulder (580 nm) in the spectral sensitivity curves were pre sumed to be derived from the three cone systems.