PS102 Study Guide - Midterm Guide: Surface Detail, Oval Window, Opponent Process
Document Summary
Place in space- rely on 3 cues to determine which way is up: visual, gravity and body direction. Involves absorption of energy, such as light or sound waves, by sensory organs, such as ears, eyes. Perception- selection, organization and interpretation of sensory input. Psychophysics- study of how physical stimuli are translated into psychological experience. Threshold- is a dividing point between energy levels that do and don"t have detectable effect. Absolute threshold- minimum amount of stimulation an organism can detect: stimulus intensity detected 50 percent of the time. Just notable difference (jnd) - smallest difference in the amount of stimulation that a specific sense can detect (fetchner) Weber"s law- states that the size of a just noticeable difference is a constant proportion of the size of the initial stimulation (weber fraction) Fetchner"s law- states the magnitude of a sensory experience is proportional to the number of.
