PSY 1101 Study Guide - Retina, Color Vision, Absolute Threshold
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PSY 1101 Full Course Notes
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Representations of external world determined by sensation and perceptions. Sensation process by which sensory receptors and nervous sys. Perception process of selecting, organizing, + interpreting our sensations, enabling us to recog. 2 ways we process sensory info- bottom up, and top-down: bottom up- from sense rec. to brain= a sensed at black blotch, decomposed by brain and perceived by a by brain, top-down- using higher level mental proc. Construct perceptions drawing on expectations + exp. (predictive abilities used: picture of fruit man, top down, b/c recognize food and face shape. Psychophysics- study of relationship btw physical characteristic of stimuli (their intensity) and our psychological exp. Of them (physical world= psychological world, light= brightness, sound=volume: absolute threshold- minimum stim. No: self-esteem tapes given to students, and control= no tapes, there was no diff btw groups, difference threshold= min. diff btw 2 stimuli req. for detection 50% of the time also called just noticeable diff (jnd) aka.
