PSY 200 Lecture Notes - Lecture 18: Psychophysics, Neural Adaptation, Luis Walter Alvarez
16 Nov 2020
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Document Summary
Transduction: sensory coding: sensory receptors translate the physical properties of stimuli into patterns of neural impulses, transduction: the process by which sensory stimuli are converted to signals the brain can interpret. Quantity: the brain needs qualitative and quantitative information about a stimulus, qualitative information: consists of most basic qualities of a stimulus, quantitative information: consists of the degree or magnitude of those qualities. Detection requires a certain amount of the stimulus: psychophysics: a subfield developed during the 19th century by the researchers ernst. Weber and gustav fechner, examines our psychological experiences of physical stimuli. Signal detection theory: signal detection theory (sdt): a theory of perception based on the idea that the detection of a stimulus requires a judgment it"s not an all-or-nothing process. Sensory adaptation: sensory adaptation: a decrease in sensitivity to a constant level of stimulation, same as tolerance; neurons are being stimulated be it drugs or sensory input.
