lecture 15 color vision Flashcards
(T or F) The wavelength for purple is 453nm
False, purple doesn’t have a wavelength, it is the combination of red and blue.
cone responses are _____.
A) univariant, meaning if you only had one type of cone you would not be able to see color
B) univariant, meaning if you had only one cone you could still see color but only for that range of the color spectrum
C) bivariant, meaning you need at least 2 cones to see color
D) trivariant, meaning you need all 3 cones to see color
A) univariant, meaning if you only had one type of cone you would not be able to see color
in regards to light: blue + green + red = ______
A) white, its additive
B) black, its additive
C) white, its subtractive
D) black, its subtractive
A) white, its additive
in regards to dyes: cyan +magenta + yellow = ____
A) white, its additive
B) black, its additive
C) white, its subtractive
D) black, its subtractive
D) black, its subtractive
S, M, and L cones have which respective wavelengths?
A) 480, 584, 620
B) 420, 534, 564
C) 584, 473, 423
D) 564, 534, 426
B) 420, 534, 564
L cones that wire equally together produce …..
A) white light
B) decreased contrast sensitivity
C) greater brightness sensitivity
D) a condition called Rosenomia that is similar to wearing red tinted glasses
C) greater brightness sensitivity
I completely made up Rosenomia
What theory describes the fact that you cannot have a redish-green or yellowish-blue color?
opponent process theory (there are 2 parts to this theory, an achromatic system and a chromatic system)
Are purple and violet practically the same color?
No, purple is a mix of red and blue, violet is not
What do you call it when you stare at a black, yellow, and blue flag then look away and see the image of the flag as red, white, and blue?
opponent after image
V1, V2, and V4 process color respectively in which of the following places?
A) blobs, interblobs, slabs
B) blobs, slabs, globs
C) globs, blobs, slabs
D) interblobs, globs, slabs
B) blobs, slabs, globs
Select the correct statement regarding the 2 different forms of contrast; energy and spectral:
A) energy contrast reproduces the shape of an object and spectral reproduces the size and color of that object
B) these pathways are considered perpendicular rather than parallel
C) Energy contrast involves simple cells only and spectral contrast involves both simple and hypercomplex cells
D) Energy contrast involves both simple and hypercomplex cells and spectral involves only hypercomplex cells
A) energy contrast reproduces the shape of an object and spectral reproduces the size and color of that object
*these 2 pathways are parallel, and both involve simple and hypercomplex cells**
(T or F) Energy contrast processing originates in the parvo pathway and Spectral contrast processing originates in the konio pathway
True
(T or F) Double opponent simple cells in V1 show a stronger response to green whether green and red are moving together or separatly and double opponent complex cells of V1 show a stronger response to red but only when red and green are moving together
True
