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Colour - Coggle Diagram

- - - - Fatigue in the cells stimulated, become less responsive - changes the pattern of activity
    - - Works best when surrounded by other colors
    - - Past knowledge of the color of an object
- - - - Looking at one wavelength at a time & comparing them to a colour patch
        
        People that are colour blind can match with 2 colours instead of 3
      - stimuli are metamers
    - - Measured absorption spectra of visual pigments in receptors
      - genetic differences for coding proteins for the three pigments
  - - - Respond excitatory manner to one end of the spectrum and an inhibitory manner to the other
      - Provide colour information but not about adjacent regions illuminated by different wavelengths
      - Double-opponent neurons - info about location of edges between regions that differ in colour and differ in brightness
    - - Explained by opponency & chromatic adaption
      - Fatigue of neurons
    - - Adjusting the other colours until they no longer see any colour
      - Unique Colours are those that are perceived to be a single colour & not a combinations of other cones
        
        Pure Blue, pure green, pure yellow
        
        Anywhere the graph crosses zero
  - - - (L+M)-S
    - - (L+S)-M
    - - (L+M)
- - - - each perceptual dimensions is associated with a different physical property of light