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analysis that begins with the sensory receptors and works up to the brain's integration of sensory info
info processing guided by higher-level mental processes; construct perceptions and experience expectations
study of relationships b/w physical characteristics of stimuli and our psychological experience of them
activation usually unconsciously of certain associations, predisposing on'es perception, memory or response
principle that, to be percieved as diff., 2 stimuli must differ by constant minimum percentage
dimension of color that is determined by the wavelength of light; for example, blue and green as colors
amount of energy in a light or sound wave, which we perceive as brightness or loudness determined by a wave's amplitude
light-sensitive inner surface of the eye, containing the receptor rods and cones and layers of neurons that begin processing of visual info
retinal recpetors that detect black, white and gray; necessary for peripheral and twilight vision when cones don't respond
retinal receptor cells near the center of the retina and function in daylight; detect fine detail and give rise to color sensations
point at which optic nerve leaves the eye, creating a "blind" spot b/c no receptor cells are located there
nerve cells in the brain that respond to specific features of stimulus, such as shape, angle or movement
processing of aspects of a problem simultaneously; brain's natural mode of info processing for many functions including vision
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