Duplicity Theory of Vision: From Newton to the Present

index 223Purkinje afterimage 38, 92Purkinje phenomenon 31, 33, 53, 93Purkinje shift 36, 79, 82, 96, 142‘quanta’ of light 10rapid voltage fluctuations 72receptive field 74, 76, 157‘red-green’ see-substance 48retinoids 193rod-cone facilitation 121rod monochromat 33, 54, 55, 177roots of the duplicity theory 3‘Schultze trawdition’ 4scientific revolution 201S-cone pathways 129scotopic contrast colours 113, 114, 116,118, 119sensorium 11, 34simultaneous and successive contrast 49simultaneous and successive induction 49single binding site for cGMP 185‘slow’ rod influence 128specific fibre-energy doctrine 34, 84specific-hue threshold 101, 102, 103, 104,111, 113, 120, 121, 122specific nerve-energy doctrine 20spectrally opponent cells 117, 121spectral modulator curves 82spectro-photometrical measurements 111Spinoza’s principle of psychophysicalparallelism 41statistical fluctuation 169, 174Stiles-Crawford effect 125succession of falsifications 200succession of traditions 200tetramer 181, 184three standard lights 17, 18, 19time constant of rhodopsin regeneration 178transducin 182, 183transient tritanopia 188transmembrane ion flux 185transverse pulses 9trichromatic colour theory of Young 16, 20two-colour threshold technique 93, 161two-dimensional colour space 19ultimate truth 199, 201, 206unexpected observations 205universal colour theory 14‘Urfarben’ 59, 119visual yellow 29, 32, 33, 34, 88vitamin A 140, 143, 144‘water’ element 2‘white-black’ see-substance 48, 49white-grey-black colour series 47Whiteness 8‘yellow-blue’ see-substance 48, 49yellow-blue substrate 34Young- Maxwell-Helmholtz colour theory206