Psych and Soc CH 2 Sensation and Perception

  1. transduction
    conversion of information from internal and external environment to electrical signals in the nervous system
  2. perception
    processing of information to make sense of its significance
  3. psychophysics
    relationship between physical nature of stimuli and the sensations and perceptions they evoke
  4. photoreceptors
  5. hair cells
    hearing, rotational and linear acceleration
  6. nociceptors
    pain, somatosensation
  7. thermoreceptors
  8. osmoreceptors
    osmolarity of the blood
  9. olfactory receptors
  10. taste receptors
  11. threshold
    minimum amount of a stimulus that renders a difference in perception
  12. absolute threshold
    minimum of stimulus energy that is needed to activate a sensory system
  13. signal detection theory
    changes in our perception of the same stimuli depending on bout psychological and environmental context
  14. response bias
    tendency of subjects to systematically respond to a stimulus in a particular way
  15. catch trials
    trials in which signal is presented
  16. noise trials
    trials in which signal is not presented
  17. hits
    signal present, positive response
  18. miss
    signal present, negative response
  19. false alarm
    signal absent, positive response
  20. correct negative
    signal absent, negative response
  21. retina
    contains photoreceptors to transduce light into electrical information
  22. cones
    color vision and fine details
  23. rods
    sensation of light and dark
  24. bipolar cells
    highlights gradients between adjacent rods or cones
  25. amacrine/horizontal cells
    receive input from multiple retinal cells before being passed on to ganglion cells
  26. parvocellular cells
    shape detection
  27. magnocellular cells
    motion detection
  28. order of ossicles
    • malleus
    • incus
    • stapes
  29. Eustachian tube
    equalize pressure between middle ear and the environment
  30. bony labyrinth contains
    • cochlea
    • vestibule
    • semicircular canals
  31. endolymph
    potassium rich fluid that bathes the membranous labyrinth
  32. perilymph
    fluid that suspends the membranous labyrinth
  33. vestibule (utricle, saccule)
    linear acceleration
  34. semcircular canals
    rotational acceleration
  35. lateral geniculate nucleus
  36. medial geniculate nucleus
  37. superior olive
    localizes sound
  38. tonotopical
    vibrations indicate pitch of sound
  39. Pacinian corpuscles
    depp pressure and sensation
  40. Meissner corpuscles
    light touch
  41. Merkel cells
    deep pressure and texture
  42. Ruffini endings
  43. free nerve endings
    pain and temperature
  44. normal temperature of skin
  45. law of proximity
    elements close to one another tend to be perceived as a unit
  46. law of similarity
    objects that are similar tend to be grouped together
  47. law of good continuation
    elements that appear to follow in the same pathway tend to be grouped together
  48. law of pragnanz
    perceptual organization will always be as regular, simple, and symmetric as possible
Card Set
Psych and Soc CH 2 Sensation and Perception