UNIT IV REVIEW

KEY TERMS AND CONCEPTS TO REMEMBER

  1. sensation, p. 158
  2. sensory receptors, p. 158
  3. perception, p. 158
  4. bottom-up processing, p. 158
  5. top-down processing, p. 159
  6. selective attention, p. 159
  7. inattentional blindness, p. 160
  8. change blindness, p. 161
  9. transduction, p. 162
  10. psychophysics, p. 162
  11. absolute threshold, p. 163
  12. signal detection theory, p. 163
  13. subliminal, p. 163
  14. difference threshold, p. 163
  15. priming, p. 165
  16. Weber’s law, p. 165
  17. sensory adaptation, p. 165
  18. perceptual set, p. 169
  19. extrasensory perception (ESP), p. 172
  20. parapsychology, p. 172
  21. wavelength, p. 177
  22. hue, p. 177
  23. intensity, p. 177
  24. cornea, p. 177
  25. pupil, p. 177
  26. iris, p. 177
  27. lens, p. 177
  28. retina, p. 177
  29. accommodation, p. 177
  30. rods, p. 178
  31. cones, p. 178
  32. optic nerve, p. 178
  33. blind spot, p. 179
  34. fovea, p. 179
  35. Young-Helmholtz trichromatic (three-color) theory, p. 181
  36. opponent-process theory, p. 182
  37. feature detectors, p. 183
  38. parallel processing, p. 183
  39. gestalt, p. 187
  40. figure-ground, p. 187
  41. grouping, p. 188
  42. depth perception, p. 189
  43. visual cliff, p. 189
  44. binocular cue, p. 189
  45. retinal disparity, p. 189
  46. monocular cue, p. 190
  47. phi phenomenon, p. 190
  48. perceptual constancy, p. 191
  49. color constancy, p. 192
  50. perceptual adaptation, p. 195
  51. audition, p. 198
  52. frequency, p. 198
  53. pitch, p. 198
  54. middle ear, p. 199
  55. cochlea [KOHK-lee-uh], p. 199
  56. inner ear, p. 199
  57. sensorineural hearing loss, p. 200
  58. conduction hearing loss, p. 200
  59. cochlear implant, p. 201
  60. place theory, p. 202
  61. frequency theory, p. 202
  62. gate-control theory, p. 207
  63. olfaction, p. 211
  64. kinesthesia [kin-ehs-THEE-zhuh], p. 213
  65. vestibular sense, p. 213
  66. sensory interaction, p. 214
  67. embodied cognition, p. 214

KEY CONTRIBUTORS TO REMEMBER

Gustav Fechner, p. 163

Ernst Weber, p. 165

David Hubel, p. 182

Torsten Wiesel, p. 182

AP® EXAM PRACTICE QUESTIONS

Multiple-Choice Questions

  1. What is the purpose of the iris?
    1. To focus light on the retina
    2. To process color
    3. To allow light into the eye
    4. To enable night vision
    5. To detect specific shapes
  2. _____ are neurons that fire in response to specific edges, lines, angles, and movements.
    1. Rods
    2. Cones
    3. Ganglion cells
    4. Feature detectors
    5. Bipolar cells
  3. Signal detection theory is most closely associated with which perception process?
    1. Vision
    2. Sensory adaptation
    3. Absolute thresholds
    4. Smell
    5. Context effects
  4. Which of the following represents perceptual constancy?
    1. We recognize the taste of McDonald’s food each time we eat it.
    2. In photos of people, the people almost always are perceived as figure and everything else as ground.
    3. We know that the color of a printed page has not changed as it moves from sunlight into shadow.
    4. From the time they are very young, most people can recognize the smell of a dentist’s office.
    5. The cold water in a lake doesn’t seem so cold after you have been swimming in it for a few minutes.
  5. You friend tells you that a cloud looks like your math teacher; you look up and agree. Which principle explains why this is so?
    1. Selective attention
    2. ESP
    3. Perceptual set
    4. Shape constancy
    5. Bottom-up processing
  6. The process by which rods and cones change electromagnetic energy into neural messages is called
    1. adaptation.
    2. accommodation.
    3. parallel processing.
    4. transduction.
    5. perceptual setting.
  7. Which of the following is most likely to influence our memory of a painful event?
    1. The overall length of the event
    2. The intensity of pain at the end of the event
    3. The reason for the pain
    4. The amount of rest you’ve had in the 24 hours preceding the event
    5. The specific part of the body that experiences the pain
  8. Frequency theory relates to which element of the hearing process?
    1. The rate at which the basilar membrane vibrates
    2. The number of fibers in the auditory nerve
    3. The point at which the basilar membrane exhibits the most vibration
    4. The decibel level of a sound
    5. The number of hair cells in each cochlea
  9. Which of the following best represents an absolute threshold?
    1. A guitar player knows that his D string has just gone out of tune.
    2. A photographer can tell that the natural light available for a photograph has just faded slightly.
    3. Your friend amazes you by correctly identifying unlabeled glasses of Coke and Pepsi.
    4. A cook can just barely taste the small amount of salt she has added to her soup.
    5. Your mom throws out the milk because she says the taste is “off.”
  10. Which of the following describes a perception process that the Gestalt psychologists would have been interested in?
    1. Depth perception and how it allows us to survive in the world
    2. How we notice the various flavor elements in a dish
    3. How an organized whole is formed out of its component pieces
    4. What the smallest units of perception are
    5. The similarities between shape constancy and size constancy
  11. Which sensory process are the hammer, anvil, and stirrup involved in?
    1. Detecting intense colors
    2. Processing information related to our sense of balance
    3. Transmitting light energy to ganglion cells
    4. Transmitting sound waves to the cochlea
    5. Smelling the foul odors of the locker room
  12. Which of the following might result from a disruption of your vestibular sense?
    1. Inability to detect the position of your arm without looking at it
    2. Loss of the ability to detect bitter tastes
    3. Dizziness and a loss of balance
    4. An inability to detect pain
    5. Loss of color vision
  13. The experience of a smooth picture at the movies, even though the actual film is made up thousands of separate pictures is due to
    1. the phi phenomenon.
    2. perceptual set.
    3. stroboscopic movement.
    4. relative motion.
    5. the illusory effect.
  14. As you look down the road, the lines of the road seem to come together in the distance, even though you know they do not. Which depth cue explains this phenomenon?
    1. Relative motion
    2. Retinal disparity
    3. Interposition
    4. Light and shadow
    5. Linear perspective
  15. Which of the following phrases accurately describes top-down processing?
    1. The entry-level data captured by our various sensory systems
    2. The effect that our experiences and expectations have on perception
    3. Our tendency to scan a visual field from top to bottom
    4. Our ability to detect letters of a word before we know what the word is
    5. The fact that information is processed by the higher regions of the brain before it reaches the lower brain
  16. Meghan’s friends seek her out for help with their problems because she can “see the future” and know what the outcome of an event will be before it happens. Her friends think that Meghan has the power of
    1. telepathy.
    2. clairvoyance.
    3. precognition.
    4. psychokinesis.
    5. sensory interaction.
  17. As she looks down the hallway, Elaine is not tricked into thinking that the friend who is closer to her looks larger than the friend who is farther down the hall. Which monocular cue helps her with this understanding?
    1. Interposition
    2. Linear perspective
    3. Interposition
    4. Relative height
    5. Relative size
  18. Because of the repeated exposure to loud noise they experience during their daily jobs, airport ground workers are most susceptible to damage to which of the following?
    1. Olfactory nerve
    2. Cochlea
    3. Ganglion cells
    4. Bipolar cells
    5. Hammer, anvil, and stirrup
  19. Which of the following is the best example of sensory interaction?
    1. Simultaneous exposure to warm and cold produces the skin sensation of hot.
    2. Some cones have the ability to detect red and green or blue and yellow light.
    3. You notice a slight flicker of a light when there is a sound that accompanies it.
    4. Pitch perception is explained by the frequency and place theories.
    5. You fail to notice the odd smell of your friend’s room after an hour.
  20. After looking at a yellow, black, and green American flag for a minute, you shift your gaze to a white wall. Which of the following best explains why you “see” a red, white, and blue flag when looking at the white wall?
    1. Frequency theory
    2. Young-Helmholtz theory
    3. Opponent-process theory
    4. Ganglion-bipolar theory
    5. Weber’s law

Free-Response Questions

  1. Ester is walking to class when she notices someone in the distance suddenly duck into a dark doorway. As she chases the figure, she misjudges the distance and runs into the door and falls down. She laughs when she discovers that the mystery person is her roommate, who was avoiding Ester, because she had borrowed Ester’s favorite sweater without permission and was afraid Ester might be angry.

    Use the following terms to explain the perceptual processes involved in this scenario.

    • Gate-control theory
    • Vestibular sense
    • Selective attention
    • Signal detection theory
    • Binocular cues
    • Perceptual set

(6 points)

  1. Describe, from the beginning of the process to the end, how your brain is perceiving the words you are reading right now. Use the following terms in your answer.
    • Transduction
    • Top-down processing
    • Retina
    • Pupil
    • Occipital lobe
    • Rods
    • Feature detectors

(7 points)