Chapter 6 Flashcards
Must detect energy from environment (__) and encode it as neural signals (__); we must also select, organize, and interpret (__) our sensations (__)
bottom-upsensationtop-downperception
__ is divided at the level of conscious awareness
Attention
From an immense array of visual __ before us, we select just a few to __
stimuliprocess
__ reveal the ways we normally organize and interpret our sensations
Illusions
Must perceive objects as distinct from their __, having a meaningful and constant __, and discern their __ and __
surroundingsformdistance and motion
In perception, the __ may exceed the sum of its parts. Perceived __ differs from the sum of its parts
wholewhole
__ and __ are one continuous process progressing upward from specialized __ __ and downward from our __
Sensation and perceptiondetector cellsassumptions
First perceptual task: perceive an object (__) as distinct from its surroundings (__)
figureground
We now organize the __ into meaningful form; process basic features of a __ instantly and automatically (color, movement, light/dark contrast)
figure scene
__ and __ found 6-14 month old infants refused to pass over the dangerous drop off in a visual cliff, showing they could perceive __
Eleanor GibsonRichard Walkdepth
By __ __, infants use gestalt perception principles by looking at novel groupings of objects
3 months
__ __ predisposes our wariness of heights, but __ amplifies it
Biological maturationexperience
Since our eyes are about 2½ inches apart, our retinas receive __ __ images of world
slightly different
3-D movies simulate or exaggerate __ __ by photographing a scene with two cameras placed a few inches apart; 3-D effect mimics normal __ __
retinal disparityretinal disparity
Contribute to illusion that vertical dimensions are longer than identical horizontal dimensions
relative height
Objects beyond __ __ appear to move w/ you; farther away the objects are, __ they will move; brain uses the speed and direction to compare objects’ __ __
fixation pointfasterrelative distances