PSYC 1010 Lecture Notes - Detection Theory, Visual Cortex, Absolute Threshold
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PSYC 1010 Full Course Notes
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Document Summary
Sensation: the process by which our sensory receptors and nervous system receive. Bottom up processing: taking information and then assembling and integrating it. Signal detection theory: predicts when we will detect weak signals. How certain are we that stimulus is present? (you are walking alone, did u hear something?) What criteria do we use to determine if stimulus is present: criteria fluctuate, apparent sensitivity fluctuates, other factors such as fatigue. When absolute threshold are not absolute: signal detection theory: whether or not we detect a stimulus, especially amidst background noise, mother can tell their babies cries over background noise or other cries. Difference threshold: smallest diff between 2 stimulus: for weight is about 1/50 breaks down at very high. Perceptual set is what we expect to see, which influences what we do see. Perceptual set is an example of top down processing (if you are monster hunting you are going to see the lockness monster not a branch)
