Brain and Behavior Exam 2.
What is responsible for the lack of photoreceptors at the optic disc and consequent blind
spot? correct answers It is the location where blood vessels and ganglion cell axons
leave the eye.
Amblyopia is best treated with correct answers surgical correction and an eye patch
Which statement regarding visual fields is true? correct answers The right visual field
projects to the eyes and then to the left cerebral hemisphere.
A high density of _______ is responsible for the dark color of the fovea, and this density
is what make visual _______ so high in this area. correct answers cones; acuity
Which statement describes the spatial-frequency model? correct answers The visual
system analyzes the number of cycles of light-dark patches in any stimulus.
The phenomenon of adaptation refers to correct answers the constantly changing
sensitivity of photoreceptors to light in order to match illumination levels.
Most axons of the retinal ganglion cells terminate in the correct answers lateral
geniculate nucleus.
Which of the following is incorrectly paired? correct answers Horizontal cells; action
potentials
Among mammals, color vision is correct answers weak in some species
Simple cortical visual cells are most likely to be activated by correct answers bars of
particular width, orientation, and location in the visual field.
Which statement about rod receptors is false? correct answers Rods contain a special
photopigment called S opsin.
The most common age-related cause of vision loss is correct answers macular
degeneration.
Visual acuity is highest in the region of the retina called the correct answers fovea.
_______ of the pupils is associated with the use of drugs that block acetylcholine
transmission, such as belladonna. correct answers Dilation
What is responsible for the lack of photoreceptors at the optic disc and consequent blind
spot? correct answers It is the location where blood vessels and ganglion cell axons
leave the eye.
Amblyopia is best treated with correct answers surgical correction and an eye patch
Which statement regarding visual fields is true? correct answers The right visual field
projects to the eyes and then to the left cerebral hemisphere.
A high density of _______ is responsible for the dark color of the fovea, and this density
is what make visual _______ so high in this area. correct answers cones; acuity
Which statement describes the spatial-frequency model? correct answers The visual
system analyzes the number of cycles of light-dark patches in any stimulus.
The phenomenon of adaptation refers to correct answers the constantly changing
sensitivity of photoreceptors to light in order to match illumination levels.
Most axons of the retinal ganglion cells terminate in the correct answers lateral
geniculate nucleus.
Which of the following is incorrectly paired? correct answers Horizontal cells; action
potentials
Among mammals, color vision is correct answers weak in some species
Simple cortical visual cells are most likely to be activated by correct answers bars of
particular width, orientation, and location in the visual field.
Which statement about rod receptors is false? correct answers Rods contain a special
photopigment called S opsin.
The most common age-related cause of vision loss is correct answers macular
degeneration.
Visual acuity is highest in the region of the retina called the correct answers fovea.
_______ of the pupils is associated with the use of drugs that block acetylcholine
transmission, such as belladonna. correct answers Dilation
