PSYC310 Chapter Notes - Chapter 1: Detection Theory, Sensory Neuroscience, Absolute Threshold
3 Mar 2017
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Document Summary
Sensation: ability to detect a stimulus and perhaps to turn that detection into. Thresholds and dawn of psychophysics a private experience. Perception: act of giving meaning to a detected sensation. Methods used in study of senses: thresholds, sensory neuroscience, neuroimaging. Qualia: saying you hear or taste something that experience; is this the same as others": scaling measuring private experience, signal detection theory measuring difficult decisions. Fachner panpsychism: the mind exists as a property of all matter. Just noticeable difference: the difference required for detecting a change in weight (jnd/difference threshold) Weber fractions: constant ratio between the change and what. Weber"s law: the size of the detectable difference (deltai) is a constant proportion (k) of the level of the stimulus (i) Fechners law: considered the smallest detectable change in a stimulus (delta i) could be considered a unit of the mind because this is the smallest bit of change that is perceived: s = k log r.
