Psych Ch 3

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Psych Ch 3
2012-09-13 19:21:48

Psych Ch 3
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  1. Sensation
    process detecting and aquiring information
  2. Perception
    Organzing what you see
  3. Gestan
    • The whole is greater than the sum of it's parts
    • (the brain sees more)
  4. Absolute threshold
    The minimal amount of stymulas you need to detect something
  5. Subliminal info
    infor that is below your absolute threshold 
  6. Difference Threshold
    just noticable difference, once stimulus is already present how much change is needed for you to detect it
  7. Weber's law
    The size of the difference threshold is going to depend on how much stimulus is already present 
  8. Sensory adaptation
    Your body doesn't get used to something, your neurons really just calm down 
  9. Transduction
    Your body taking external information and turning it into neural information
  10. Stimulus input: light energy
    we don't see all light, but that is a good thing
  11. Shortwave length
    high frequeny, high pitched sounds, blueish colors
  12. Long wavelength
    low frequency, reddish colors, soft sounds
  13. Saturation
    purity of light
  14. Cornea
    outter most part of the eye, focus on the light 
  15. Pupil
    light goes into your pupil, it is controlled by the iris
  16. lens
    • primary structure of the eye
    • this is what focuses and projects image onto the back of the eye
  17. fovea
    high concentration of neurons and it is able to see the most clearly, it controls color vision 
  18. Blindspot
    point where information goes into the brain
  19. Near sighted 
    Eye is stretched vertically
  20. Far sighted 
    eye is stretched horizontally
  21. Retina cells: Rods
    120 Mil. work well in low levels of light, blueisgh grey color 
  22. Retina Cells: Cones
    6 mil. color, details, don't function in low levels of light
  23. Thalamus
    Color, how far away, sorts through and sends to diff parts of visual cortex 
  24. Parallel processing 
    all regions of the visual cortex are working simulataneously
  25. Trichromatic 
    three color theory,, 3 types of cones, red, green, blue
  26. Opponet process
    black and white, red and green, yellow and blue, brain is responding to changes in neural activity 
  27. stimulus input
    wavelength, amplitude, timbre
  28. Pinna
    outside part of ear
  29. auditory canal
    sending sound waves to inner ear
  30. eardrum 
    vibrates as sound waves come in
  31. cochlea
    • hair cells stircups connect to this, 
    • as sound comes in the stirup bangs against the oval window and sounds waves then turn into waves of liquid in the cochlea
  32. Place theory
    location of baslar membrane in being stimulated 
  33. frequency theory
    frequency of neural firings is directly tied to frequency of sound
  34. Volley principle
    neurons right next to each other take turns firing and working together
  35. locating sound 
    time lag between two ears as they hear sounds, create a sound shadow to hear where the sound is coming from
  36. bottom up processing
    basic levels and builds up to meaning
  37. top down processing
    • uses prior experiences to influence what you percieve 
    • ex. words 
  38. selective attention
    change blindness, stimulus changes right in front of your face and you don't notice