Physiological Psych. Module 5.2 Quiz
Cortical area ____ appears to be where conscious visual perception occurs.
V1
Infants with cataracts need to have surgical repair ____.
as early as possible
Astigmatism refers to the ____.
asymmetric curvature of eyes
What is the shape of the receptive field to which a simple cell in the primary visual cortex responds?
bar in a particular orientation
What type of cell responds to a pattern of light in a particular orientation anywhere within its large receptive field, regardless of the exact location of the stimulus?
complex
Which cell responds most strongly to a stimulus moving perpendicular to its axis?
complex
In foveal vision, ____.
each ganglion cell is excited by a single cone
____ respond to a particular feature of a stimulus.
feature detectors
____ cells axons make up the optic nerve.
ganglion
In the vertebrate retina, which cells are responsible for lateral inhibition?
horizontal cells
What is responsible for sharpening contrast at visual borders?
lateral inhibition
Cutting the left optic nerve in front of the optic chiasm would result in blindness in the ____.
left eye
Axons from the lateral geniculate extend to which area of the cerebral cortex?
occipital lobe
The optic nerves from the right and left eye initially meet at the ____.
optic chiasm
Being able to detect fine details of a color painting would depend most on which type of ganglion cells?
parvocellular
The receptive field of a receptor is the ____.
point in space from which light strikes the receptor
The ____ of any neuron in the visual system is the area of the visual field that excites or inhibits it.
receptive field
V1 neurons would be most strongly activated by viewing ____.
repeating stripes on a flag
In depth perception, different views are received by each eye, depending on the distance of the object being viewed. What is this called?
retinal disparity
Stereoscopic depth perception requires the brain to detect ____.
retinal disparity
Horizontal cells receive their input from ____, and they send output to ____.
rods and cones; bipolar cells
The primary visual cortex is also known as the ____.
striate cortex
The lateral geniculate nucleus is part of the ____.
thalamus
In the visual system, the ____ and ____ constantly feed information back and forth.
thalamus; cortex
The primary visual cortex sends its information ____.
to area V2
Where does the optic nerve send most of its information?
to the lateral geniculate
What would be the likely outcome of a person who was blind at birth, and had vision restored later in life by the removal of cataracts (clouded lenses)?
trouble describing the shapes of objects
What is strabismus?
a failure of the two eyes to focus on the same thing at the same time
Parvocellular neurons most likely receive input from ____.
bipolar cells that receive input from cones
The one additional feature that hypercomplex cells have that complex cells do not is that hypercomplex cells ____.
have a strong inhibitory area at one end of its receptive field
Branches of the optic nerve go directly to what areas of the brain?
lateral geniculate and superior colliculus
The ability to detect movement better than color in our peripheral vision is largely due to ____.
magnocellular neurons in the periphery
Blindsight refers to ____.
the ability to localize visual objects within an apparently blind visual field
What is one way to determine whether a given cell in the primary visual cortex is "simple" or "complex"?
whether it can respond equally to lines in more than one location
