PSYCH 1XX3 Lecture Notes - Lecture 7: Tetrachromacy, Color Blindness, Human Factors And Ergonomics
3 Mar 2017
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Document Summary
The colours around us are really just in our heads our brains interpret colour based on signals we receive from our environment. The visual spectrum is just part of a continuum. Limits of visual detection bias our views: heat-vision goggles give us a strange sense of time we leave behind trails of heat. Gives us a glimpse into the past: we are comfortable with a lot of things because we can"t see them. Unique combined receptor activity produces distinct colour perception. Colour perception can affect people very emotionally. Specific types of colour blindness where certain cones overlap more over others (causing a lack of contrast between colours) can be treated with enchroma glasses. Colour perception abilities differ across species: ex. Zebrafinches have an extra cone that allows them to see into the ultraviolet spectrum used for foraging. The world of the tetrachromat: some women have a fourth cone located between the red and green cones.
