| 释义 |
psychophysic, a. and n.|ps-, saɪkəʊˈfɪzɪk|
Also with hyphen.
[f. Gr. ψῡχο- psycho- + ϕυσικ-ός physical.]
A. adj. = psychophysical, esp. in psychophysic law, ‘the law expressing the relation between a change of intensity in the stimulus and the resulting change in the sensation’ (Billings).
1887Amer. Jrnl. Psychol. I. 140 The conditions are as infinitely complicated as the psycho-physic constitution of man. 1890Billings Nat. Med. Dict. 404 The psychophysic law requires that the just observable difference shall be a constant fraction of the mean of the two stimuli.
B. n. Commonly in pl. psychoˈphysics. [= Ger. Psychophysik (Fechner 1859): see physic n. 1, physics.] The science of the general relations between mind and body; spec. the investigation of the relations between physical stimuli and psychic action in the production of sensations; ‘experimental psychology’ (Syd. Soc. Lex.).
1878Rep. Brit. Assoc. Adv. Sci. 1877 ii. 95 Most of you are aware of the recent progress of what has been termed Psycho-physics, or the science of subjecting mental processes to physical measurements and to physical laws. 1879Lewes Stud. Psychol. 184 It has been found possible to introduce quantitative relations between stimuli and sensations, and a new branch of science, called Psychophysics, has arisen. 1893Pall Mall G. 30 Jan. 2/3 Mr. F. Galton was to lecture at the Royal Institution on ‘The Just-Perceptible Difference’... It turned out to be a discourse on the somewhat vague science known to experts as psycho-physics. 1937Amer. Speech XII. 228/1 On the psycho-physics of speech. 1944Jrnl. Optical Soc. Amer. XXXIV. 66/1 Physicists..have surrendered almost the entire field of psychophysics to the psychologist. 1973C. D. Kernig Marxism, Communism & Western Society VII. 91/2 A distinction is made between (a) classical psychophysics in which the physiology of the senses is studied with the help of refined..techniques..; (b) activation (arousal) research, which is concerned with..conditions for the release and course of affective and motivational states. 1976S. George Fatal Shadows 37 The new scientists, men whose discoveries of gifted psychics had shot them to the top of psychophysics. |