Sensation/Perception/Consciousness

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Across
  1. 2. smallest amount of energy needed for a person to detect a stimulus 50% of the time
  2. 4. conscious focus on one stimulus or perception at one time
  3. 7. characterize deep sleep
  4. 8. Photoreceptor - for visual acuity and color vision
  5. 9. when energy is picked up by one (or more) of our senses
  6. 10. we are taking deliberate actions (problem solving, naming objects, defining words).
  7. 13. Photoreceptor - for use in dimly-lit conditions
  8. 14. Central area of the retina where light rays are most sharply focused; greatest density of cones.
  9. 16. when your senses are exposed to an unchanging stimulus and stop registering that stimulus
  10. 21. what is ignored while your attention is selectively focused on something else
  11. 22. characterize being drowsy or relaxed
  12. 26. Awareness of ourselves and our environment
  13. 27. Where the optic nerve leaves the eye; there are no photoreceptor cells here.
  14. 28. characterize active wakefulness
  15. 31. states there are three different cones that are each sensitive to varying wavelengths of light
  16. 32. refers to the type of processing of information that starts with the raw data, or the stimuli from the environment
  17. 33. Transparent disc that changes shape to bring objects into focus.
Down
  1. 1. characterized by excessive daytime sleepiness and periodic, uncontrollable sleep attacks
  2. 3. sleep disorder involving regular interruptions of breathing during sleep
  3. 5. Transmits visual information from the retina to the brain.
  4. 6. relies heavily on your previous knowledge and experience to influence perceptions
  5. 11. characterized by the dissatisfaction with the amount or quality of sleep; symptoms include: difficulty falling asleep at bedtime, difficulty staying asleep, etc
  6. 12. Curved, transparent dome that bends incoming light waves so the image can be focused on the retina.
  7. 15. states there are three special visual receptors that work in pairs and in an opposing manner
  8. 17. we are performing automatic actions, often without being aware of them (walking, acquiring phobias, processing sensory details)
  9. 18. Innermost layer of the eye, where incoming light is converted into nerve impulses; contains photoreceptor cells.
  10. 19. when the brain selects, organizes, and interprets this information
  11. 20. the minimum difference between two stimuli needed to detect a difference 50% of the time
  12. 23. occurs during NREM sleep in response to an abnormal transition from N3 to REM or lighter stage of sleep (also known as sleep walking)
  13. 24. Opening in the center of the iris that changes size depending on the amount of light in the environment.
  14. 25. when physical energy is converted into an electrical charge
  15. 29. Specialized cells that convert physical energy into electrical energy that can be transmitted as nerve impulses to the brain
  16. 30. Colored area containing muscles that control the pupil.