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Bekesy, G.
Traveling wave theory
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Broadbent, D
Filter theory of attention
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Gibson, E & Walk, R
Visual cliff
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Hering, E - opcv
Opponent process of color vision
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Hubel, D & Wiesel, T - s,c,hc
Feature detection in visual cortex;
discovered simple (orientation and boundaries), complex (advacned info - movement), and hypercomplex cells (abstract concepts like object shape)
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Melzack, R & Wall, P
Gate theory of pain
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Swets, John
ROC curves in signal detection theory
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Wever, E & Bray, C
Volley theory of pitch
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Yerkes, R & Dodson, J
- Yerkes-Dodson law:
- Performance is best at intermediate level of arousal
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Weber, Ernst
Just noticebale difference:
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CPILR
- parts of the eye:
- Cornea
- Pupil
- Iris
- Lens
- Retina
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Cells in the retina - C R A RGC ON ONF
- Cones - color and fine detail
- Rods - perceive achromatic cells, low sensitivity to detail, no color vision, functions best in reduced illumination
- Bipolar cells - connect cones and rods
- Amacrine cells
- Retinal ganglion cells. - form optic nerve
- Optic nerve fibers
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optic chiasm
Where fibers from Nasal half of retina cross paths
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Path of auditory info - OC LGN(t) VC(o) SC
- Optic Chasm
- Lateral Geniculate Nucleus (thalamus)
- Visual Cortex (occipital lobe)
- Superior colliculus
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Perceived brightness - a, sb, li
Adaptation - your eyes adapt to bright And dark environments
SimultAneous brightness contrast - stimulus Ppears brighter when compared to. Darker object
LaterL inhibition - adjacent retinal cells inhibit one another
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ROYGBIV
- Colors of the spectrum:
- Red
- OrAnge
- Yellow
- Green
- Blue
- Indigo
- Violet
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Trichromatic theory Y/H
- Young-Helmhotz theory:
- The retina contains three differrent types of color receptors (cones) which Re differentially sensitive to different colors
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Hering's criticism of trichromatic theory
Yellow is a primary color
- Opposing pairs:
- Red-green
- Blue-yellow
- Black-white
- (opponent process theory of color vision)
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Depth cues - I/O S LP TXG MP BD/S
- Interposition/overlap
- Relative size
- Linear perspective
- Texture gradient
- Motion parallax
- Binocular disparity/stereopsis (requires 2 eyes)
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perception of form
Figure (object at center of attention) and ground (background)
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5 laws of perception - PSCCP
- Proximity
- Similarity
- Good continuation
- Closure
- Pragnanz
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Bottom-up processing
Perception of components and then entire object
(data drivem)
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Top-down processing
Object perception guided by conceptual processes (memories and expectations)
Recognize whole object and then components
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