PSYC 1101 Lecture Notes - Lecture 7: Retina, Cornea, Binocular Disparity
15 Sep 2016
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Document Summary
Sensation: basic processes by which sensory organs and the nervous system respond to stimuli in the environment and the elementary psychological experiences that result from those processes. Perception: more complex organization of sensory information within the brain and the meaningful interpretations extracted from it. The perceptual experience of one sense that is evoked by another sense. Optical allusions: color, 3-demensional, corners, motion. Psychophysics: methods that measure the strength of a stimulus and the observer"s sensitivity to that stimulus. Absolute threshold: the minimal intensity needed to just barely detect a stimulus. A clock"s tick 20 feet away when all is quiet. A fly"s wing touching the cheek form 1 centimeter away. A single drop of perfume diffused through an area equivalent to the volume of six rooms. A teaspoon of sugar dissolved in two gallons of water. A candle flame 30 miles away on a clear, dark night. Used to evaluate individual thresholds: such has hearing and sigh tests.
