Multiple Choice Quiz


1	Light hits what structure of the eye first?
		A)	Retina.
		B)	Vitreous humor.
		C)	Cornea.
		D)	Lens.


2	What layer of the retina is closest to the light coming in through the pupil?
		A)	Ganglion cell layer.
		B)	Inner nuclear layer.
		C)	Outer nuclear layer.
		D)	Inner plexiform layer.


3	Which color is NOT one of the optimal sensitivity ranges of the cones?
		A)	Green.
		B)	Violet.
		C)	Blue.
		D)	Red.


4	Where does phototransduction take place?
		A)	Ganglion cells.
		B)	Photoreceptors.
		C)	Bipolar cells.
		D)	Amacrine cells.


5	Who discovered the receptive fields of a neuron?
		A)	Hermann von Helmholtz.
		B)	Thomas Young.
		C)	Margaret Wong-Riley.
		D)	Vernon Mountcastle.


6	What shape is characteristic of a receptive field?
		A)	Circle.
		B)	Square.
		C)	Rectangular bar.
		D)	Triangle.


7	What is a measure of light intensity?
		A)	Reflectance.
		B)	Phototransduction.
		C)	Luminance.
		D)	Color constancy.


8	Contrast enhancement is a product of
		A)	lateral inhibition.
		B)	lightness constancy.
		C)	color constancy.
		D)	reflectance.


9	Which is NOT true of the M ganglion cells?
		A)	Have larger receptive fields.
		B)	Are fewer in number than P ganglion cells.
		C)	Involved in large object detection.
		D)	Involved in color discrimination.


10	Which projects to the right hemisphere?
		A)	Right eye.
		B)	Left eye.
		C)	Right temporal hemiretina.
		D)	Right nasal hemiretina.


11	Where is the greatest density of cones
		A)	Optic disc.
		B)	LGN.
		C)	Blobs.
		D)	Fovea.


12	What does a homonymous hemianopic person see?
		A)	Nothing.
		B)	Nothing out of one eye or the other.
		C)	Either the left or right visual field in both eyes.
		D)	Either the top or bottom visual field in both eyes.


13	How many layers does the LGN have?
		A)	Three.
		B)	Four.
		C)	Five.
		D)	Six.


14	How many projections does the LGN have to the visual cortex?
		A)	Three.
		B)	Four.
		C)	Five.
		D)	Six.


15	What is the disorder of color perception related to damage in V4?
		A)	Achromatopsia.
		B)	Visual agnosia.
		C)	Blind sight.
		D)	Akinetopsia.


16	What does area V5 process?
		A)	Color perception.
		B)	Form perception.
		C)	Motion perception.
		D)	Dynamic form.


17	What does area V3 process?
		A)	Color perception.
		B)	Form perception.
		C)	Motion perception.
		D)	Dynamic form.


18	Who discovered the ocular dominance columns?
		A)	Young and Helmholtz.
		B)	Hubel and Wiesel.
		C)	Semir Zeki.
		D)	Margaret Wong-Riley.


19	The grandmother cells in the inferior temporal cortex of monkeys are sensitive to
		A)	food.
		B)	faces.
		C)	color.
		D)	motion.


20	What is the name of the phenomenon resulting from damage to V1?
		A)	Achromatopsia.
		B)	Visual agnosia.
		C)	Blind sight.
		D)	Akinetopsia.

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