absolute difference limen

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• limen — noun the smallest detectable sensation • Syn: ↑threshold • Hypernyms: ↑sensation, ↑esthesis, ↑aesthesis, ↑sense experience, ↑sense impression, ↑sense datum …   Useful english dictionary

• Absolute threshold — In neuroscience and psychophysics, an absolute threshold is the smallest detectable level of a stimulus. For example, in an experiment on sound detention, researchers may present a sound with varying levels of volume. The smallest level that a… …   Wikipedia

• Just-noticeable difference — In psychophysics, a just noticeable difference, customarily abbreviated with lowercase letters as jnd, is the smallest detectable difference between a starting and secondary level of a particular sensory stimulus.[1] It is also known as the… …   Wikipedia

• Just noticeable difference — In psychophysics, a just noticeable difference, customarily abbreviated with lowercase letters as jnd, is the smallest difference in a specified modality of sensory input that is detectable by a human being. It is also known as the difference… …   Wikipedia

• Psychophysics — is a subdiscipline of psychology dealing with the relationship between physical stimuli and their subjective correlates, or percepts. Psychophysics has been described variously as “the scientific study of the relation between stimulus and… …   Wikipedia

• threshold — 1. The point at which a stimulus first produces a sensation. 2. The lower limit of perception of a stimulus. 3. The minimal stimulus that produces excitation of any structure; e.g., the minimal stimulus eliciting a moto …   Medical dictionary

• Egypt — • Provides information on history, religion, and literature Catholic Encyclopedia. Kevin Knight. 2006. Egypt     Egypt     † …   Catholic encyclopedia

• illusion — illusioned, adj. /i looh zheuhn/, n. 1. something that deceives by producing a false or misleading impression of reality. 2. the state or condition of being deceived; misapprehension. 3. an instance of being deceived. 4. Psychol. a perception, as …   Universalium

• Weber , Ernst Heinrich — (1795–1878) German physiologist and psychologist Weber was the eldest of three brothers who all made important contributions to science. He was born at Wittenberg in Germany and became a professor at the University of Leipzig in 1818, a position… …   Scientists

• psychophysics — psychophysical /suy koh fiz i keuhl/, psychophysic, adj. psychophysically, adv. psychophysicist /suy koh fiz euh sist/, n. /suy koh fiz iks/, n. (used with a sing. v.) the branch of psychology that deals with the relationships between physical… …   Universalium