Unit 3 Sensation & Perception

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Across
  1. 2. adaptation, diminished sensitivity as a consequence of constant stimulation
  2. 3. threshold, the smallest detectable difference between two stimuli
  3. 4. a ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening
  4. 5. The clear tissue that covers the front of the eye
  5. 6. the light-sensitive inner surface of the eye, containing the receptor rods and cones plus layers of neurons that begin the processing of visual information
  6. 7. blindness, failing to notice changes in the environment
  7. 11. retinal receptors that detect black, white, and gray; necessary for peripheral and twilight vision, when cones don't respond
  8. 12. nerve, the nerve that carries neural impulses from the eye to the brain
  9. 15. set, a mental predisposition to perceive one thing and not another
  10. 16. retinal receptor cells that are concentrated near the center of the retina and that function in daylight or in well-lit conditions. The cones detect fine detail and give rise to color sensations.
  11. 17. the process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events
  12. 20. persuasion, A way to persuade viewers or listeners of a message by way of communication that actually is received subconsciously.
  13. 22. spot, the point at which the optic nerve leaves the eye, creating a "blind" spot because no receptor cells are located there
  14. 25. the activation, often unconsciously, of certain associations, thus predisposing one's perception, memory, or response
  15. 26. the process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment
Down
  1. 1. "morphine within"--natural, opiatelike neurotransmitters linked to pain control and to pleasure.
  2. 2. attention, the focusing of conscious awareness on a particular stimulus
  3. 8. threshold, the smallest possible strength of a stimulus that can be detected half the time
  4. 9. blindness, failing to see visible objects when our attention is directed elsewhere
  5. 10. below one's absolute threshold for conscious awareness
  6. 13. the adjustable opening in the center of the eye through which light enters
  7. 14. the amount of energy in a light or sound wave, which we perceive as brightness or loudness, as determined by the wave's amplitude
  8. 16. implant, a device for converting sounds into electrical signals and stimulating the auditory nerve through electrodes threaded into the cochlea
  9. 18. sense of smell
  10. 19. noticeable difference, the minimal change in a stimulus that can just barely be detected
  11. 21. the transparent structure behind the pupil that changes shape to help focus images on the retina
  12. 23. the central focal point in the retina, around which the eye's cones cluster
  13. 24. the dimension of color that is determined by the wavelength of light; what we know as the color names blue, green, and so forth