Phototransduction

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Phototransduction
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Bowmaker and Dartnell (1980) found four classes
of photopigments as shown in the above graph.
The colors of the curves do not represent the
colors of the photopigments. The wavelength of
maximum absorbance is indicated at the top of
each curve. The 420 curve is for the short
wavelength cones, the 498 curve is for the rods,
and the 534 and 564 curves are for the middle
and long wavelength sensitive cones respectively.
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The black curve with its peak at 498 nm is the
spectral absorbance function for the rod
photopigment, rhodopsin.
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How the world looks to a person with a
red/green color deficit (deuteranopia).
How the world looks to a person with a
blue/yellow color deficit (tritanopia).
The world.
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Same strawberries as viewed by a person
with red-green color deficit
Strawberries
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As seen by a person with protanopia, another
form of red/green deficit.
As seen by a person with deuteranopia.
Some colorful hats.
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