Chapter 5: Vision Quiz
Which of the following would be easiest for someone who is motion blind?
dressing themselves
Visual information from the lateral geniculate area goes to the ___.
primary visual cortex
According to the trichromatic theory, we can perceive only three colors.
False
Which statement is TRUE with regard to peripheral vision?
It is easier to recognize single objects in the periphery that are not surrounded by other objects.
Why do humans perceive faint light better in the periphery of the eye?
More receptors in the periphery than in the fovea funnel input to each ganglion cell.
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
In comparison to cones, rods ___.
are more sensitive to dim light
Astigmatism refers to the ___.
asymmetric curvature of the 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
Once within the cerebral cortex, a mixed pathway of magnocellular and parvocellular cells is important for ___.
brightness and color
Damage to the dorsal stream may interfere with ___.
describing what is seen
In foveal vision, ___.
each ganglion cell is excited by a single cone
The law of specific nerve energy states that ___.
every stimulation of the optic nerve is perceived as light
Human newborns come into the world predisposed to pay more attention to ___ than any other stationary displays.
faces
The retinas of predatory birds such as hawks ___.
have a greater density of receptors than do humans at the top half of the retina
Which structure has the largest receptive fields and the greatest preferential sensitivity to highly complex visual patterns, such as faces?
inferior temporal cortex
Suppose someone has a genetic defect that prevents the formation of horizontal cells in the retina. Which visual phenomenon is most likely to be impaired?
lateral inhibition
The ability to detect movement better than color in our peripheral vision is largely due to ___.
magnocellular neurons in the periphery
Once information is sent to the secondary visual cortex, it ___.
may return to the primary visual cortex
Color and brightness constancy are best explained by the ___ theory of color vision.
retinex
The primary visual cortex sends its information ____.
to area V2
The fact that all colors on older televisions were created by combining three different colors of light supports the ___ theory of color vision.
trichromatic
The ability of some women to detect slightly finer discrimination in color than other women is most likely due to having ___.
two types of long-wavelength cones
The visual paths in the temporal cortex collectively are referred to as the ___.
ventral stream
Which receptors are responsible for the perception of color?
cones only