PSYCH 1XX3 Lecture Notes - Lecture 5: Additive Color, Paracellular Transport, Lightdark
23 Apr 2018
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Document Summary
Introduction to colour perception: your ability to see colour is based on what colour is being reflected back to your retina, and is not being absorbed by the object in question. Who has colour vision: birds, fish, reptiles, insects, mammals (limited to primates, no colour vision - dog, cat, bull, etc. Colour mixing: primary colours: 3 colours that can be combined to make every colour humanly possible. Additive colour mixing: when coloured lights add their dominant colour (wavelength) to the mixture, primary colours with this theory are red, green and blue, as seen on your tv screen. Colour coding in the retina: receptive fields of ganglion cells donut-shaped, respond to colour in the center, colour-sensitive receptive fields responsive to yellow-blue and red-green, one colour increases rate of firing, complementary colour decreases rate of firing. From retinal ganglion cells, colour info sent to the lateral geniculate nucleus (lgn)
