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 loss compression. These models explain why humans perceive very little loss of signal quality when audio and video signals are formatted using loss compression.
Psychophysics quantitatively investigates the relationship between physical stimuli and the sensations and perceptions they affect. 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.”
- Physical stimuli
- Sensations and perceptions
- Descrimination and detection
- Entric perceptions and sences
- Quantum gravity and spin foams