Colour Perception

Colour Perception

To the tune of “Super Trouper” by ABBA

[Chorus]
Colour perception has three steps
Starts with detection
Then discrimination
Appearance is the final one

[Verse 1] 
The first step is colour detection
By the cone photoreceptors
Best under photopic conditions
In scotopic this does not occur

[Pre-Chorus] 
There are three types of cone photoreceptors
Small, large, and medium
Different wavelengths of light maximally stimulate each one

 [Chorus]
Process of colour perception has three steps
Starts with detection
Then discrimination
Appearance is the final one
Process of colour perception has three steps
Starts with detection
Then discrimination
Appearance is the final one

[Verse 2] 
Step 2: colour discrimination
Must overcome univariance
Under photopic conditions
All 3 cones are activated

[Pre-Chorus] 
Every single colour on the colour spectrum
Induces a unique pattern
With this activity, univariance is overcome

[Chorus] 
Process of colour perception has three steps
Starts with detection
Then discrimination
Appearance is the final one 
Process of colour perception has three steps
Starts with detection
Then discrimination
Appearance is the final one

[Bridge] 
Colour appearance is guided
By colour opponent theory which describes
Perception of colour
As opponency
Between black-white, blue-yellow, and red-green

 [Chorus]
Process of colour perception has three steps
Starts with detection
Then discrimination
Appearance is the final one
Process of colour perception has three steps
Starts with detection
Then discrimination
Appearance is the final one