Psych Ch. 8 sect. 2

  1. Senses & internal senses
    • vision, hearing, taste, smell, touch
    • internal: vestibular & kinesthetic
  2. pupil
    • opening in iris
    • regulates amnt. of light entering eye
  3. lens
    • flexible, transparent structure
    • changes shape to focus light on the retina
  4. retina
    • innermost coating of the back of the eye
    • contains light-sensitive receptor cells
  5. optic nerve
    carries impulses from retina to the brain
  6. How vision works
    light goes into the pupil, the lens focuses it on the retina, which uses rods and cones to change the light energy into neuronal impulses, then traves over optic nerve ot the occipital lobe
  7. electromagnetic spectrum
    • Gamma Rays
    • X Rays
    • Ultraviolet Rays
    • Visible Light
    • Infared Rays
    • Radar
    • Broadcast Bands
    • AC Circuts
  8. Color Deficiency
    when some/all of a person's cones do not function properly
  9. Bionocular Fusion
    process of combinging images recieved from the two eyes into a single, fused image
  10. Retinal disparity
    differences between the images stimulating each eye
  11. Near/farsightedness
    • Near- eyeball too long
    • Far- eyeball too short
  12. Auditory Nerve
    nerve that carries impulese from inner ear to brain, causing sensation of sound
  13. Cochlear implant
    • device surgically implanted into cochlea
    • changes sound waves into electrical signals
  14. Vestibular sysrem
    • 3 semicircular canals that provide sense of balance
    • located in inner ear & conneted to brain by a nerve
  15. Olfactory nerve
    nerve that carries smell impulses from nose to brain
  16. Gate control theory of pain
    lessen pain by shifting attention away or sending other signals to compete w/ the pain signals
  17. Kinesthesis
    • sense of movement & body position
    • allows for walking, piano playing, etc.
Card Set
Psych Ch. 8 sect. 2
the senses