Uploaded April 2021 | Updated September 2026, 1 week ago

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The topic that is the first major hurdle in Sensation and Perception classes: the Principle of Univariance. Let's try and work through it.


Cat spotters: the cubes are both occupied.



PS. I promise this will lead to octopuses and cuttlefish. Eventually.



Links
Ishihara color vision test: colorvisiontesting.com/ishihara
FM 100: xrite.com/hue-test?PageID=77

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Music: zoeblade.com

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Timestamps
0:00 The Principle of Univariance and Color Vision
1:26 Trichromatic theory of color vision
5:22 Behavioral evidence for trichromacy
9:48 Back to the absorption curves
13:07 Principle of Univariance
16:24 Metamers, practically
18:36 Wrap up and credits