cognitive notes (dragged) 7.pdf - Visual Perception \u25cf Sensing\u200b the conversation of physical energy into the neural codes recognized by the brain \u25cf

cognitive notes (dragged) 7.pdf - Visual Perception ●...

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Visual Perception Sensing - the conversation of physical energy into the neural codes recognized by the brain Perceiving - an internal representation of the object is formed and a percept of the external stimulus is developed Cognitive researchers are interested in how we end up at final visual perception The inverse projection problem occurs because the real world is 3-D while our retinal image is 2-D There are an infinite number on 3-D objects that can give rise to a 2-D percept We perceive things in 3-D but light comes in contact with retinas in 2-D No limit to the number of ways a 2-D object can be reinterpreted in 3-D 3-D world, 2-D representation Visual ambiguities Shape and orientation Light source, reflectance, and shadow Accurately identifying color (is something light or dark) Size and distance (something looks small because its far away or is it actually small) Necker cube - percept is not stable (alternates) Sensation is not changing
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Unformatted text preview: ● Face inversion effect ● Office of government commerce ● Perceptual constancies- a retinal image can change dramatically but we still perceive the same thing ○Shape constancy (circle and oval) ○Size constancy (school bus ex) ● Moon illusion- the moon looks up to 50% larger when it is near the horizon ● Brightness and color constancy ○ Change the brightness and still perceive colors accurately ● Depth perception involves using visual cues to perceive the distance of objects ● Monocular depth cues only require the use of one eye while binocular depth cues require both eyes ● Relative size- if an image of one object is bigger than another object it appears closer ○ Monocular cue ●Occlusion- when one object is blocked by another object, the blocked object is perceived as being farther away ○ Monocular cue ○ Very first cue learned ○ Impossible figures ● Atmospheric perspective- faraway objects often appear hazy or slightly blurred...
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  • Fall '12
  • Staff
  • Depth perception

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