PSYC 100 Lecture Notes - Lecture 7: Detection Theory, Absolute Threshold, Environmental Noise
19 Apr 2016
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Don"t have to study pain, taste, touch, smell!!!!!! Bottom-up and top-down: bottom = eyes, looking at details (contrasts, shades, shapes, up = perception. Sensation: the detection of environmental stimuli, such as sounds, objects and smells. Simple: simple stimulation of a sense organ stimulation of sense organ. Perception: the organization, identification and interpretation of that sensation in order to form a mental picture. Synesthesia: perceptual experience of one sense that is evoked by another sense". Psychophysicists: often measure the minimum amount of a stimulus needed for detection. Psychophysics: methods that measure the strength of a stimulus and the observer"s sensitivity to that stimulus: things like sleep, nutrition, can affect how you perceive something. Rate how bright the light is, how loud the tone is. A threshold is a boundary: absolute threshold: minimal intensity needed to barely detect a stimulus is 50%
