PSY100Y5 Chapter Notes - Chapter 4: Absolute Threshold, Psy, Subjective Constancy
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PSY100Y5 Full Course Notes
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Chapter 4- sensation and perception: people rely on 3 cues for up direction- visual, gravity + body direction, sensation. = selection, organization, interpretation of sensory input: sensation = absorption of energy through organs, perception = organizing and translating sensory input into something meaningful. Psychophysics: basic concepts and issues: psychophysics experience. Study of how physical stimuli are translated into psychological: gustav fechner published work on psychophysics @ university of leipzig. Thresholds looking for limits: sensation begins with a stimulus detectable input from environment, fechner wanted to know what is minimum amount, threshold detectable effect. Dividing point between energy levels that do and don"t have a: absolute threshold. = min amount of stimulation that an organism can detect: stimulus intensity detected 50% of the time. Weighing the differences the just noticeable difference. Smallest difference in amount of stimulus that a: vary from absolute threshold by sense, webers law stimulus.
