Which eye structure is responsible for dark adaptation?

Related Mcqs:

1. Fifteen minutes after Zaigham left the brightly lit hallway and entered the dark passageway, dark adaptation was:

   A. Complete in both his rods and cones
   B. Not taking place in his cones, but complete in his rods
   C. Complete in his cones, but still taking place in his rods
   D. Still taking place in both his rods and his cones

2. A psychologist watches the rapid eye movements of sleeping subjects and wakes them to find they report that they were dreaming. She concludes that dreams are linked to rapid eye movement. this conclusion is based on:

   A. pure speculation
   B. direct observation
   C. deduction from direct observation
   D. prior prediction

3. Sensory adaptation refers to:

   A. Diminishing sensitivity to an unchanging stimulus
   B. Adjustment in the opening of the eye
   C. The process by which stimulus energies are changed into neural impulses
   D. Changes in the shape of the lens as it focuses on objects

4. Perceptual adaptation refers to the:

   A. Grouping of stimuli into smooth, uninterrupted patterns
   B. Perception of an object as unchanging in shape regardless of our own viewing angle
   C. Tendency for novel or unfamiliar stimuli to capture our attention
   D. Perceptual adjustment to an artificially displaced visual field

5. The sentences “Mario is easy to please” and “Mario is eager to please” have_______-surface structure and______deep structure.

   A. a different; the same
   B. no; the same
   C. a different; a different
   D. the same; a different

6. Which TWO of the following statements are true of simultaneous contrast illusions? 1. In the simultaneous tilt illusion, vertical stripes appear tilted away from the tilt of their surrounding stripes. 2. In the luminance illusion, a grey patch appears darker when surrounded by a dark area than when surrounded by a light area. 3 A purple patch appears slightly closer to blue when surrounded by red, and closer to red when seen against a blue background. 4. Visual illusion effect only exist for motion.

   A. 1 & 3
   B. 2 & 3
   C. 3 & 4
   D. 2 & 4

7. A stationary point of light when viewed in an otherwise totally dark room appears to move. This is an example of ________________?

   A. apparent motion
   B. induced motion
   C. the autokinetic effect
   D. binocular disparity

8. You walk into a dark movie theater wearing a white shirt, and notice that the shirt now looks gray. However, you know that the shirt is still white because of _________________?

   A. size constancy
   B. brightness constancy
   C. linear perspective
   D. texture gradient

9. Farida was informed by a professional palm reader. “You generally communicate openly with others, but you have certain dark secrets that even your closest friends could never guess.” The fact that Farida was impressed by the palm reader’s insight into her personality best illustrates:

   A. the Barnum effect
   B. the spotlight effect
   C. the self-reference phenomenon
   D. unconditional positive regard

10. Mariam is blond with blue eyes and curly hair. She also has A blood type and dark skin. This is a description of Mariam’s:

    A. temperament
    B. genetic makeup
    C. gene type
    D. phenotype