The primate retina
a. contains four photopigments.
b. contains five photopigments.
c. has one type of cone and three types of rods.
d. uses rods to make fine acuity distinctions.
e. is composed of alternating layers of rods and cones.
Question 2
A microelectrode inserted into a cat retinal ganglion cell of the ON cell type described by Kuffler would
a. show a change in response rate to rapid movements of a dark spot.
b. record an excitatory burst of potentials to a light placed within a circular center.
c. record a decreased number of potentials to a light placed within a circular center.
d. show an increased number of potentials when a light was placed onto a ring surrounding the center.
e. result in random action potentials.
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