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13 Cards in this Set
- Front
- Back
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sensation |
The process by which out sensory receptors and nervous system receive and represent stimulus energies from our environment |
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perception |
the process of organizing and interpreting sensory information enabling us to recognize meaningful objects and events |
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bottom-up processing |
analysis that begins with the sensory receptor and works up to the rains integration of sensory information |
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top-down processing |
information processing guided by higher level mental processes, as when we construct perceptions drawing on our experience and expectations |
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Transduction |
conversion of one form of energy into another. in sensation, the transforming of stimulus energies, such as sights, sounds, and smells, into neutral impulses our brain can interpret. |
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Absolute threshold |
the minimum stimulus energy needed to detect a particular stimulus 50 percent of the time |
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signal detection theory |
a theory predicting how and when we detect the presence of a faint stimulus (signal) and background stimulation (noise). assumes there is no single absolute threshold and that detection depends partly on a persons experience, expectations, motivation, and alertness. |
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subliminal |
below ones absolute threshold for conscious awareness |
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priming |
the activation, often unconsciously, of certain associations, thus predisposing ones perception, memory, or response. |
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Difference threshold |
the minimum difference between two stimuli required for detection 50 percent of the time. (Just noticeable difference) or JNB |
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webers law |
the principle that to be perceived as different, two stimuli must differ by a constant minimum percentage (rather than a constant amount) |
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Sensory adaptation |
diminished sensitivity as a consequence of constant stimulation |
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perceptual set |
A mental predisposition to perceive one thing and not another |
