Psyc 310 Quiz 2

21 Questions | By DrKatieD | Last updated: Jul 9, 2013 | Total Attempts: 273

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Quiz 2 for PSYC 310. Choose the best answer for each question. This quiz covers vision, object perception and Gestalt grouping principles, and color vision. (Motion perception IS NOT covered on this quiz and will be covered on quiz 3. )

Questions and Answers

1.

1. The human eye has three cone photopigments that are important for the perception of color. What photopigment below is NOT one of those three cone photopigments?
- A.
  
  Long wavelength
- B.
  
  Medium wavelength
- C.
  
  Short wavelength
- D.
  
  Rhodopsin
2.

Gestalt principles of object recognition refer to the idea that the _______ is more than the sum of the ______.
- A.
  
  Whole; parts
- B.
  
  Whole; lines of the object
- C.
  
  Line; connections it makes
- D.
  
  Parts; whole
3.

An OFF-center ganglion responds most vigorously to light when that light appears where? Hint: refer to the OFF-Center ganglion cell figure in Week 3's slides.
- A.
  
  As a small spot in the center.
- B.
  
  As a spot that fills the entire center without spilling into the surround.
- C.
  
  As a spot that fills the entire surround without spilling into the center.
- D.
  
  Diffuse light across the entire receptive cell (center and surround).
4.

The problem of univariance can be visualized by:
- A.
  
  Color vision in bright light
- B.
  
  Color vision in low light
- C.
  
  Rod-dominated vision in low light conditions like dusk.
- D.
  
  None of the above.
5.

L-cones are most sensitive to:
- A.
  
  Longer wavelength light (~565 nm)
- B.
  
  Shorter wavelength light (~440 nm)
- C.
  
  Middle wavelengths of light (~ 535 nm)
- D.
  
  None of the above.
6.

A metamer can be defined as mixtures of wavelengths that are:
- A.
  
  Absorbed during subtractive color mixing.
- B.
  
  Perceptually identical and physically identical.
- C.
  
  Perceptually different and physically different.
- D.
  
  Perceptually identical but physically different.
7.

At least two different cone photopigments are needed to produce ANY perception of color.
- A.
  
  True
- B.
  
  False
8.

_________ in the visual pathway is defined as a larger portion of the striate cortex devoted to processing information from the fovea, which is a very small part of the retina.
- A.
  
  Cranial magnification
- B.
  
  Cortical magnification
- C.
  
  Foveal matrix
- D.
  
  Foveal retraction
9.

Additive color mixing is very similar to the painting technique known as pointalism.
- A.
  
  True
- B.
  
  False
10.

Vision in the periphery of the retina is much more detailed than vision in the fovea of the retina.
- A.
  
  True
- B.
  
  False
11.

There is a physiological limit to human vision; it is a consequnece of the spacing of the photoreceptors on the retina.
- A.
  
  True
- B.
  
  False
12.

_______ is conceptually-driven processing that emphasizes an observer's expectations.
- A.
  
  Top-down
- B.
  
  Bottom-up
- C.
  
  Sideways
- D.
  
  None of the above.
13.

There are areas in this picture where the shape you perceive and the background are the same color. This means that there are areas on this shape where the border is NOT continuous, but you still perceive a continuous border. These areas are referred to as:
14.

The pink '31' in this image that is seen as distinct from the 'BR' is an example of the Gestalt law of similarity (color).
- A.
  
  True
- B.
  
  False
15.

The Rubin Vase-Face is an example of an ambigious figure where the information for _________ is not clear, which results in the illusion of a vase or two faces emerging from the same picture.
- A.
  
  Closure
- B.
  
  Figure-Ground assignment
- C.
  
  Similarity
- D.
  
  Common Fate
16.

_________ are images or pictures that do not provide the viewer enough information concerning depth and distance cues. These pictures/objects usually produce visual illusions, such as the Necker cube.
- A.
  
  Animated images
- B.
  
  Non-accidental images
- C.
  
  Ambiguous figures
- D.
  
  None of the above.
17.

A T-junction is a non-accidental feature that NEVER signals occulsion of an object by another object.
- A.
  
  True
- B.
  
  False
18.

Y and arrow junctions correspond to corners and and do not signal occulsion.
- A.
  
  True
- B.
  
  False
19.

Given that each cone photoreceptor (and rod photoreceptor) can only send a neural firing rate to the brain, these photoreceptors are said to be 'univariate'.
- A.
  
  True
- B.
  
  False
20.

Humans are dichromats, not trichromats.
- A.
  
  True
- B.
  
  False
21.

Click the box next to each Gestalt Law or Grouping Principle (there are five correct answers; worth 5 points).
- A.
  
  Occlusion
- B.
  
  Visual Organization
- C.
  
  Proximity
- D.
  
  Anomaly
- E.
  
  Common Fate
- F.
  
  Similarity
- G.
  
  Closure
- H.
  
  Center-Surround