Chapter 3 Vocab

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Across
  1. 5. the lingering visual impression made by a stimulus that has been removed
  2. 6. the theory that color vision is made possible by three types of cones, some of which respond to red or green light, some to blue or yellow, and some to the intensity of light
  3. 8. the nerve that transmits sensory information from the eye to the brain
  4. 10. rod shaped photoreceptors that are sensitive only to the intensity of light cones
  5. 11. cone shaped photoreceptors that transmit sensations of color
  6. 12. the view that the perception of sensory stimuli involves the interaction of physical, biological, and psychological factors
  7. 13. neurons that conduct neural impulses from rods and cones to ganglion cells
  8. 15. the part of the electromagnetic spectrum that stimulates the eye and produces visual sensations
  9. 16. the theory that color vision is made possible by three types of cones, some of which respond to red light, some to green, and some to blue
  10. 18. neurons whose axons form the optic nerve
  11. 19. a person with normal color vision
  12. 20. the fraction of the intensity by which a source of physical energy must be increased or decreased so that a difference in intensity will be perceived
Down
  1. 1. descriptive of colors of the spectrum that, when combined, produce white, or nearly white, light
  2. 2. the minimal amount by which a source of energy must be increased or decreased so that a difference in intensity will be perceived
  3. 3. a condition characterized by brittleness of the lens
  4. 4. neurons in the sensory cortex that fire in response to specific features of sensory information such as lines or edges of objects
  5. 7. the process of adjusting to conditions of lower lighting by increasing the sensitivity of rods and cones
  6. 9. the minimal difference in intensity required between two sources of energy so that they will be perceived as being different
  7. 14. sensory stimulation below a person's absolute threshold for conscious perception
  8. 17. area near the center of the retina that is dense with cones, and where vision is, consequently, most acutevisual acuity sharpness of vision