Chapter 5
An objects location, color, and movement are all processed in the same part of the visual cortex
FALSE
the coding of visual information in your brain results in exact duplicate of the object's shape on the surface of the cortex
FALSE
which statement characterizes the fovea
It has the greatest perception of detail.
lateral inhibition is the reduction of activity in one neuron by activity in neighboring neurons
TRUE
the retinex theory accounts for the principle of color constancy
TRUE
the primary visual cortex sends its information to
V2
Night-active species are more likely than day-active species to have
a greater rod to cone ratio
parvocelluar neurons most likely receive input from
bipolar cells that receive input from cones
Once within the cerebral cortex, a mixed pathway of magnocellular and parvocellular cells is important for
brightness and color
in foveal vision
each ganglion cell is excited by a single cone
the optic nerve is composed of axons form which kind of cell
ganglion cells
why does the fovea provide the clearest most detailed information
it has tightly packed receptors
the most common form of color deficiency is due to
long and medium wavelength cones making the same photopigment
Axons from the lateral geniculate extend to which area of the cerebral cortex
occipital lobe
According to the trichromatic theory of color vision
our perception of color depends on the relative activity of three types of cones
light enters the eye through and opening in the center of the iris called the
pupil
the _____ of any neuron in the visual system is the area of the visual field that excites or inhibits it
receptive field
color constancy is the ability to
recognize the color of an object despite changes in lighting
A person with visual agnosia is unable to
recognize visual objects
in addition to having difficulty recognizing faces, people with prosopagnosia may have difficulty
recognizing different kinds of plants and animals
Someone with prosopagnosia has difficulty with ____
recognizing faces
which theory can best explain why people that are wearing yellow-colored glasses can still identify the color of a green apple
retinex theory
horizontal cells receive their input from____ and they send output to ______
rods and cones, bipolar cells
in comparison to the rods, cones are more
sensitive to detail
When cells in the middle temporal cortex respond to visual stimuli, their response depends mostly on the ____.
speed and direction of movement
V1 neurons would be most strongly activated by viewing
stripes on a flag
the lateral geniculate nucleus is apart of the
thalamus
in the visual system, the _____and ______ constantly feed information back and forth
thalamus, cortex
Blindsight refers to
the ability to localize visual objects within an apparently blind visual field
Which cell responds most strongly to a stimulus moving perpendicular to its axis
complex
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
Cells in the inferior temporal cortex that are sensitive to a particular shape are also likely to respond to the shape's
mirror-reversal
Cutting the left optic nerve in front of the optic chiasm would result in blindness in ____
the left eye
Rods are to ____ as cones are to ____.
the periphery; the fovea
