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14 Cards in this Set

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the processes that organize information in the sensory image and interpret it as having been produced by properties of objects or events in the external, three-dimensional world
perception
the process by which stimulation of a sensory receptor gives rise to neutral impulses that result in an experince, or awareness, of conditions inside or outside the body
sensation
the processes that put sensory information together to give the perception of a coherent scene over the whole visual field
perceptual organization
two ways of attaching meaning to percepts
identification and recognition
in the processes of perception, the physical object in the world, as contrasted with the proximal stimulus, the optical image on the retina
distal stimulus
the optical image on the retina; contrasted with the distal stimulus, the physical object in the world
proximal stimulus
the study of the correspondence between physical simulation and psychological experience
psychophysics
the minimum amount of physical energy needed to produce a reliable sensory experience, operationally defined as the stimulus level at which a sensory signal is detected half the time
absolute threshold
a graph that plot the percentage of detections of a stimulus (on the verticle axis) for each stimulus intensity ( on the horizontal axis)
psychometric function
a phenomenon in which receptor cells lose their power to respond after a period of unchanged stimulations; allows a more rapid reaction to new sources of information
sensory adaption
the systematic tendency as a result of nonsensory factors for an observer to favor responding in a particular way
response bias
a systematic approach to the problem of response bias that allows an experimenter to identify and separate the roles of sensory stimuli and the individual's criterial level in producing the final response
signal detection theory
the smallest physical difference between the two stimuli that can still be recognized as a difference; operationally difined as the point at which the stimuli are recognized as different half of the time
difference threshold
the smallest difference between two sensations that allows them to be discriminated
just noticeable difference (JND)