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30 Cards in this Set

  • Front
  • Back
According to the trichromatic theory of color vision, the most important factor in determining the color we see is the ?

Relative activity of short, medium and long wavelengths.
Which theory of color vision is best able to explain negative color afterimages?

Opponent-Process Theory
The law of specific nerve energies states that ?

Every stimulation of the optic nerve is perceived as light.

According to the Young-Helmholtz theory, what is the basis for color vision?

Three kinds of cones.

Color constancy is the ability to ?

Recognize the color of an object despite changes in lighting.
The fact that all colors on older televisions were created by combining only three different colors of light supports what theory of color vision?

Trichromatic

In comparison to cones, rods ?

Are more sensitive to dim light.

Light from the right half of the world strikes what part of the retina?

The left half.
The most common form of color deficiency is due to what?

Long- and medium- wavelength cones making the same photo pigment.
Chemicals that release energy when struck by light-


Photo pigments



Cells in the inferior temporal cortex that are sensitive to a particular shape are also likely to respond to the shape's ?

Mirror-reversal
The ______ of any neuron in the visual system is the area of the visual field that excites or inhibits it.

Receptive field
Astigmatism refers to ?

Asymmetrical curvature of eyes.

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



Axons from the lateral geniculate extend to which area of the cerebral cortex?

Occipital lobe.
The primary visual cortex sends its information ?

To area V2.
In the visual system, the BLANK and BLANK constantly feed information back and forth?

Thalamus; cortex.
Blindsight refers to ?

The ability to localize visual objects within an apparently blind visual field.
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.
In the vertebrate retina, which cells are responsible for lateral inhibition?

Horizontal cells.
Human newborns come into the world predisposed to pay more attention to BLANK than any other stationary displays?

Faces
The visual path in the parietal cortex is referred to as the ?

Dorsal stream
A person with visual agnosia is unable to?

Recognize visual objects.
When cells in the middle temporal cortex respond to visual stimuli, their response depends mostly on ?

Speed and direction of movement.
In addition to having difficulty recognizing faces, people with prosopagnosia may have difficulty ?

Recognizing different kinds of plants and animals.
According to the frequency theory, the ?

Basilar membrane vibrates in synchrony with a sound, producing action potentials at the same frequency.

Timing differences can be used most accurately for localizing ?

Sudden onset sounds.

What is the perception of the intensity of a sounds wave called?


Loudness.



Damage to the primary auditory cortex results in?

Difficulty responding to sequences of sounds.
Patients with damage in area MT have problems with perception of what?

Movement of objects and sounds.