front 1 sensation | back 1 the process by which our sensory receptors and nervous system receive and represent stimulus energies from our envrionment |
front 2 sensory receptors | back 2 sensory nerve endings that respond to stimuli |
front 3 perception | back 3 the process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events |
front 4 bottom-up processing | back 4 analysis that begins with the sensory receptors and works up to the brain's integration of sensory information |
front 5 top-down processing | back 5 information processing guided by higher-level mental processes, as when we construct perceptions drawing on our experience and expectations |
front 6 transduction | back 6 conversion of one form of energy into another. In sensation, the transforming of stimulus energies, such as sights, sounds, and smells, into neural impulses our brain can interpret |
front 7 psychophysics | back 7 the study of relationships between the physical characteristics of stimuli, such as their intensity, and our psychological experience of them |
front 8 absolute threshold | back 8 the minimum stimulus energy needed to detect a particular stimulus 50 percent of the time |
front 9 signal detection theory | back 9 a theory predicting how and when we detect the presence of a faint stimulus (signal) aid background stimulation (noise). Assumes there is no single absolute threshold and that detection depends partly on a person's experience, expectations, motivation, and alertness |
front 10 subliminal | back 10 below one's absolute threshold for conscious awareness |
front 11 priming | back 11 the activation, often unconsciously, of certain associations, thus predisposing one's perception, memory, or response |
front 12 difference threshold | back 12 the minimum difference between two stimuli required for detection 50 percent of the time. We experience the difference threshold as a just noticeable difference |
front 13 Weber's law | back 13 the principle that, to be perceived as different, two stimuli must differ by a constant minimum percentage (rather than a different amount) |
front 14 sensory adaptation | back 14 diminished sensitivity as a consequence of constant stimulation |
front 15 perceptual set | back 15 a mental predisposition to perceive one thing and not another |