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just noticeable difference
the smallest difference between two stimuli that is detectable 50 percent of the time
the smallest amount of energy needed for a person to consciously detect a stimulus 50 percent of the time it is present
tendency of sensory receptor cells to become less responsive to a stimulus that is unchanging
the method by which the sensations experienced at any given moment are interpreted and organized in some meaningful fashion
the tendency to interpret an object as always being the same actual size, regardless of its distance
specialized forms of neurons that are activated by different stimuli such as light and sound
the tendency to interpret the shape of an object as being constant, even when its shape changes on the retina
the tendency to perceive the apparent brightness of an object as the same even when the light conditions change
the tendency to perceive things that look similar to each other as being part of the same group
the tendency to perceive objects that are spacially close to each other as part of the same grouping
the tendency to perceive things as simply as possible with continuous pattern rather than with a complex, broken-up pattern
perception that occurs when objects that a person expects to be of a certain size appear to be small and are, therefore, assumed to be much further away
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