RESPONSES OF SINGLE CELLS IN VISUAL SYSTEM TO SHIFTS IN THE WAVELENGTH OF LIGHT.
Spectrally opponent cells of the macaque lateral geniculate are very sensitive to shifts from one wavelength to another, independent of the relative intensities of the different wavelengths. Shifts in opposite spectral directions from the adaptation wavelength produce opposite changes in firing rate, regardless of the particular wavelengths involved; however, any given cell is more sensitive to shifts in some spectral regions than in others.