Perception Flashcards
John Locke
• tabula rosa (blank slate)
• Empiricism -> experience you have paints the picture
me think you lock a tablet
Kant
• language
• Nativist -> “born with,” inclinations
- not a blank slate
- propensity for things
Ex: language; if not taught one, will make one up
Difference Threshold vs. Just Noticeable Difference (JND)
• Difference Threshold: “woah this is bright” numerical difference: 29 -> 30
• JND: psychological perception of “woah, it’s brighter”
Webber’s Law
C = 🔼 I
———
Io
C = constant
delta I = change in intensity
Place Theory Place
- location on the basilar membrane that vibrates determines if you hear a high or low pitch
Frequency Theory
- frequency determines pitch you hear
Sight perception pathway in eye
pH bag
• photoreceptors -> horizontal cells -> bipolar cells -> amycrine -> ganglion cells
Photoreceptors vs. Ganglions
Photoreceptors
• rods -> b/w; night vision
• cones -> color
Ganglions
• magno -> “b/w; dark/bright”
• parvo -> “color”
______ side of visual field goes to _____ part of visual cortex/retina
RIGHT side of visual field goes to the LEFT part of visual cortex/retina
Left hemisphere -> __________
Right hemisphere -> ___________
left hemisphere -> vocabulary
right hemisphere -> visuospatial/music emotion
Gestalt
“The whole is greater than the sum of its parts”
- organization
- how you put things together/organize them, see them differently
Retinal Disparity
- each eye gets slightly different retinal images
Ex: thumb -> one eye closed
Monocular Cues
(visual cues don’t need two eyes to receive)
1) relative size -> object closer is bigger
2) relative height -> object taller is further
3) interposition -> overlapping
4) linear perspective
5) texture gradient -> less detail further away
6) size/shape/color constancy -> all change close vs. far
7) shading contour
8) motion parallax -> object further appears to be moving slower
Binocular Cues
depth
