PSYCH 1XX3 Lecture Notes - Lecture 6: Achromatopsia, Electromagnetic Spectrum, Tetrachromacy
5 Apr 2018
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Document Summary
Colours around us are just in our head: they are actually not in the environment: completely open to interpretation, governed by neurophysiological architecture in one"s visual system and how our visual system interacts with the environment. Limits of visual detection bias your view. Our number of cone types determines experience. Unique combined receptor activity produces distinct colour perception. Each of these cones respond to specific wavelengths of light but in a range. Trichromats can see different colours in between these three because of the different intensities of such wavelengths of light and when they overlap. Colour perception can affect information processing for design and ergonomics. Most common type of colour blindness = red/green colour blindness: absence of activity in red / green cone receptors, makes it difficult to discriminate red and green. Theories of colour perception: photoreceptors converge onto ganglion cells. Light must travel through a bunch of neural tissue, hit photoreceptors, then travel back to ganglion cells.
