Red/Green color opponency at detection threshold.
By means of visual stimnulus without temporal or spatial edges, we have achieved better isolation of chromatic signals at detection threshold than has been reported previously. Under various states of adaptation, the spectral sensitivity of the chromatic mechanism detecting middle- and long-wavelength lights corresponds with that deduced from suprathreshold red/green hue equilibriums.
D003118:Color Perception / Q000502:physiology*; D006801:Humans; D013057:Spectrum Analysis; D013997:Time Factors