Unit 2 Part 1 - Sensation

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Across
  1. 3. nerve that carries visual information to the brain
  2. 7. the retina's point of central focus
  3. 9. the eye's clear, protective outer layer, covering the pupil and iris
  4. 10. region of the ear that contains the hammer, anvil, and stirrup
  5. 11. region of the retina where the optic nerve leaves the eye
  6. 14. physical dimension of light and sound that determines brightness and loudness, respectively
  7. 17. color theory that the retina contains three different types of color receptors - red, green, and blue
  8. 19. theory that the spinal cord contains a neurological "gate" that blocks pain signals or allows them to pass onto the brain
  9. 21. theory that the region of maximum vibration along the basilar membrane is the basis of pitch
  10. 22. theory of hearing that the rate of auditory nerve impulses matches the frequency of tones, enabling us to sense pitch
  11. 23. term for color seen after staring at its opponent for a whole
  12. 25. part of the eye that changes shape to focus images on the retina
Down
  1. 1. adjustable opening in the eye through which light enters
  2. 2. the sense of smell
  3. 4. aspect of light and sound determined by the amplitude of energy waves
  4. 5. type of deafness that results from damage in the mechanics of the outer or middle ear
  5. 6. process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment
  6. 8. sense of the position and movement of body parts
  7. 12. study of relations between the physical characteristics of stimuli and our psychological experience of them
  8. 13. sense of hearing
  9. 15. retinal receptors that detect black, white, and gray, and are sensitive to movement
  10. 16. inner surface of the eye that contains the rods and cones
  11. 18. color blindness when a person perceives two out of the three visual pigments
  12. 20. region of the ear that contains the cochlea, semicircular canals, and vestibular sacs
  13. 23. threshold that represents the minimum stimulation needed to detect a particular stimulus 50% of the time
  14. 24. ______-down processing is information processing guided by higher-level mental processes