Psycho-physics | Wikipedia audio article
Channel: wikipedia tts
Date: 05/05/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Psychophysics


00:01:09 1 History
00:06:42 2 Thresholds
00:07:52 2.1 Detection
00:08:39 2.2 Discrimination
00:10:51 3 Experimentation
00:11:19 3.1 Classical psychophysical methods
00:11:43 3.1.1 Method of limits
00:13:24 3.1.2 Method of constant stimuli
00:14:22 3.1.3 Method of adjustment
00:15:17 3.2 Adaptive psychophysical methods
00:16:29 3.2.1 Staircase procedures
00:17:55 3.2.2 Bayesian and maximum-likelihood procedures
00:18:50 3.2.3 Magnitude estimation
00:19:45 4 See also



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SUMMARY
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Psychophysics  quantitatively investigates the relationship between physical stimuli and the sensations and perceptions they produce. Psychophysics has been described as "the scientific study of the relation between stimulus and sensation" or, more completely, as "the analysis of perceptual processes by studying the effect on a subject's experience or behaviour of systematically varying the properties of a stimulus along one or more physical dimensions".Psychophysics also refers to a general class of methods that can be applied to study a perceptual system. Modern applications rely heavily on threshold measurement, ideal observer analysis, and signal detection theory.Psychophysics has widespread and important practical applications. For example, in the study of digital signal processing, psychophysics has informed the development of models and methods of lossy compression. These models explain why humans perceive very little loss of signal quality when audio and video signals are formatted using lossy compression.