PSY 105 Study Guide - Midterm Guide: Detection Theory, Absolute Threshold, Neural Adaptation
18 Dec 2019
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Sensation: detection of physical energy by the sense organs. Stimulus: something that can be sensed or reacted to. Perception: the brain"s interpretation of raw sensory data. Sensory adaptation: how we don"t realize we smell or our house smells. Study of how we perceive sensory stimuli based on their physical characteristics. When do we begin to notice a difference in things. The point you can tell something has been altered. Absolute threshold: the lowest level of stimulus we can detect 50% of the time. Better at knowing your moving down then up. Just noticeable difference: the smallest amount of stimulus change humans can detect ex) spotting weight difference. Weber"s law: the stronger the stimulus the greater the change needed to detect. Ex 1) 2% brightness to 5% would be more noticeable then 95% to 98% Position is you agree with the statement. Pop quiz: john thinks he doesnt smell bad but he does false negative.
