Color Vision Flashcards
What is light?
the spectrum of electromagnetic energy that the eye can see.
The human eye can see wavelengths between what?
400 and 700 nm
What are the colors that the human eye can see?
violet, indigo, blue, green, yellow, orange, red.
A pigment/color absorbs other wavelengths but what occurs?
It reflects its wavelengths.
A red jacket absorbs all wavelengths except what?
Long-Wavelengths light and appears red.
What is white color/light consists of?
a uniform mixture of different colors/wavelengths.
For wavelength detection by visual pigments consists of how many rods?
only by one type of rod
The visual pigment rhodopsin in rods has what type of absorption
505nm absorption peak so we can see color.
What is rhodopsin also called?
Purple Vision
What is responsible for black and white vision?
Rhodopsin
The photopsin in blue cones are sensitive to what?
to violet with a 445 nm absorption peak.
The photopsin in green cones are sensitive to what?
green with a 535nm absorption peak.
The photopsin in red cones are sensitive to what?
yellow-orange with a 570 nm absorption peak
The visual pigments in cones are called what?
Color pigments.
Humans are colorblind when?
in darkness or low light.
The normal human eye can match any color in the visible spectrum by what?
mixing the three primary colors (red, green, blue)
Humans are said to be what due to color detection?
trichromats
What are dichromats?
almost a complete loss in the sensitivity to one of the primary colors and only two are used to match spectral colors.
What is an anomalous trichromat?
some reduction in sensitivity to one of the primary colors.
Defects in sensitivity to red and green cones are more common than what?
blue
Most animals are what?
Dichromats
Primates are what in regards to color vision?
trichromat like humans.
Many birds and marsupials are what?
tetrachromats.
What is a tetrachromat?
they have four cone pigments including UV
