| 释义 |
metacontrast Psychol.|mɛtəˈkɒntrɑːst, -æ-|
[ad. G. metakontrast (R. Stigler 1910, in Arch. f. ges. Physiol. CXXXIV. 386), f. Gr. µετα- meta- + kontrast contrast n.]
A change, esp. a diminution, in the after-effect of a visual stimulus as a result of a second stimulus following shortly afterwards.
1950Jrnl. Optical Soc. Amer. XL. 796/1 An investigation of the effect of variation of the luminance, exposure asynchrony, and spatial separation of the stimuli on the magnitude of metacontrast. 1971Jrnl. Gen. Psychol. LXXXIV. 86 Masking and metacontrast studies do, however, demonstrate that a second stimulus may impair the perception of the first stimulus. 1972Science 13 Oct. 179/3 They suggest that temporally backward and spatially lateral inhibition (metacontrast) occurs when the duration of the flash is long enough. |
