EXP 4204 Exam 2

Why is the Necker cube interesting to perceptual psychologists?
A. It follows a non-Euclidean geometry.
B. It is actually a drawing of a cylinder, not a cube.
C. It is an ambiguous figure.
D. It is an unambiguous figure.

C. It is an ambiguous figure.

How many interpretations of the Schroder staircase can you perceive at once?
A. One
B. Two
C. Three
D. Four

A. One

What do you call the particular viewpoint of a scene that appears to create an impossible image?
A. A generic viewpoint
B. An accidental viewpoint
C. A fuzzy viewpoint
D. A singularity

A. An accidental viewpoint

Why was the Hancock Tower in Boston discussed?
A. It appears to have acute and obtuse angled corners, but it is rectangular.
B. It appears to be rectangular, but really has acute and obtuse angled corners.

B It appears to be rectangular, but really has acute and obtuse angled corners.

Which statement correctly describes the "principle of univariance"?
A. Only two wavelength and amplitude combinations can produce the same firing rate in a single type of cone.
B. Many different wavelength and amplitude combinations can produce the same f

C. Many different wavelength and amplitude combinations can produce the same firing rate in a single type of cone.

What does the physical characteristic of a light's wavelength correspond to in terms of perception?
A. Brightness
B. Color
C. Saturation
D. Shadow

B. Color

Light may vary in wavelength and amplitude, but all our visual system really "knows" is
A. The wavelength of the light
B. The amplitude of the light
C. The color of the light
D. The firing rates of our photoreceptors

D. The firing rates of our photoreceptors

How many cones does our visual system system typically use to distinguish between wavelengths and intensities of light?
A. One
B. Two
C. Three
D. Four

C. Three

Our visual systems overcome the principle of univariance by
A. Comparing the activity of three types of cones
B. Comparing the activity of two types of cones
C. "Listening" only to a single cone a time.

A. Comparing the activity of three types of cones

What typically causes color blindness?
A. Staring at the sun
B. Having a fourth type of cone instead of the usual three
C. Missing one or more types of cones

C. Missing one or more types of cones

People who are color blind do not exeperience any sort of color vision.
A. True
B. False

B. False

Which type of search has the fastest reaction time?
A. Feature search
B. Conjunction search
C. Serial search
D. Dynamic search

A. Feature search

Some searches are called "parallel" searches because
A. Detecting parallel is quite easy
B. Observers seem to process all items in the display in parallel
C. the RT x set size line tends to be parallel with x-axis
D. Both b and c

D. Both b and c

What is a conjunction search?
A. A search where the target has two or more features
B. A search where the target has a single feature
C. A search for two or more targets in a single display

A. A search where the target has two or more features

Which search types typically have the same RT x set size slopes?
A. Feature and conjunction searches
B. Feature and spatial configuration searches
C. Spatial configuration and dynamic searches

C. Spatial configuration and dynamic searches

How much information about the world do we actually encode and remember from moment to moment?
A. None of it
B. Very little of it
C. A lot of it
D. All of it

B. Very little of it

Which paradigm was used to demonstrate change blindness?
A. The flicker paradigm
B. Gradual changes
C. A continuous movie
D. All of the above

D. All the above

When two scenes are shown without a flicker in between them, how difficult is it to notice a difference between the scenes?
A. Trivially easy
B. Moderately difficult
C. Extremely difficult

A. Trivially easy

According to the _______ theory, the color of any light is defined in our visual system by the relationships among three numbers of a set.
A. Univariance
B. Saturation
C. trichromacy
D. Opponent color

C. trichromacy

In the case of a negative afterimage, a yellow stimulus would produce a _______ afterimage
A. Blue
B. Green
C. Red
D. Brown

A. Blue

_______ is the inability to perceive colors due to damage to the central nervous system.
A. Achromatopsia
B. Deuteranopsia
C. Agnosia
D. Anomia

A. Achromatopsia

There is more information in the world than we can process at once. What do you call processing some information at the expense of other information?
A. Sensation
B. Perception
C. Attention
D. Recognition

C. Attention

If a male patient with right parietal lobe damage were to shave their face, what might happen?
A. They might shave the top half of their face but not the bottom.
B. They might shave the left side of their face but not their right.
C. They might shave the

C. They might shave the right side of their face but not their left.

Lateral inhibition is a phenomenon
a. that allows for excellent depth perception in prey species.
b. that allows the visual system to detect fast-moving objects.
c. that allows the visual system to detect form.
d. whereby contrast is produced at the edges

d. whereby contrast is produced at the edges of regions.

Accommodation is controlled by which component of the eye?
a. Pupil
b. Bipolar cells
c. Ciliary muscles
d. Optic nerve

C. Ciliary muscles

The neural signals that result from the processing of visual input in the retina converge on the _______ cells.
a. bipolar
b. ganglion
c. amacrine
d. horizontal

B. Ganglion

The rods of the retina are the main receptors of the _______ visual system.
a. photopic
b. scotopic
c. foveal
d. color

B. scotopic

An off-center/on-surround cell responds most strongly when
a. the entire surround is illuminated.
b. a spot of light illuminates part of the center.
c. the entire center is illuminated.
d. a spot of light illuminates part of the surround.

A. The entire surround is illuminated

Stimulation of a photoreceptor results in the generation of _______ in the receptor.
a. an action potential
b. rhodopsin
c. a graded depolarization
d. a graded hyperpolarization

B. Rhodopsin

The cortical region whose cells respond preferentially to motion is
a. V1.
b. V2.
c. V4.
d. V5.

D. V5

Current visual research supports which of the following hypotheses?
a. Trichromatic
b. Opponent-process
c. Both a and b
d. Neither a or b

C. Both A and B

Brightness detector ganglion cells receive their input chiefly from _______ cones.
a. L and M
b. S and M
c. L, M, and S
d. L and S

A. L and M

The sharpness with which an image can be resolved by the visual system is called
a. accommodation.
b. adaptation.
c. acuity.
d. acumen.

C. Acuity

Which approach to understanding vision has provided insights into how complex forms are processed?
a. Hierarchical model
b. Spatial-frequency model
c. Lateral inhibition
d. Wavelength discrimination

B. Spatial-frequency model

Specialized ganglion cells that detect darkness are
a. stimulated by M cones only.
b. stimulated by both M and L cones.
c. inhibited by M cones only.
d. inhibited by both M and L cones

D. Inhibited by both M and L cones