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Psychophysics
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Tthe study of physical sources of stimulation-light,sound, odors, and so on-relate to our exp. of these stimuli in form of sensatios
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Gustave theeodor fechner
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Began study of psyhcophysic
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Absolute threshold
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Is the smallest amount of a stimulus that a person can reliably detect
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Difference threshold
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The minimal difference people can detect between 2 stimuli
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Weber's law
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The amount you must change a stimulus to detect a difference is given by a constant fraction or proportion of the original stimulus.
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Signal detection theory
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The belief that the ability to detect a signal varies with the characteristics of the perciever, backgrnd and the stimulus itself
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Sensory adaptation
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Process by which sensory systems become less sensitive to unchanging stimuil. habituation
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Sensation
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The process of taking info from the world, transforming in into nerual impulses, and transmitting these signals to the brain.
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