X-Nico

Color

After exposure to strong light in their sensitivity range, photoreceptors of a given type become desensitized.

Kruithof curve

Since the dominating photoreceptor in scotopic vision is most sensitive to blue, human sensitivity to blue light is therefore increased.

W. A. H. Rushton

This means that one and the same visual receptor cell can be excited by different combinations of wavelength and intensity, so that the brain can not know the colour of that point of the retinal picture.

Occipital lobe

Retinal sensors convey stimuli through the optic tracts to the lateral geniculate bodies, where optic radiations continue to the visual cortex.

see also