tachistoscopes'

tachistoscope

[tuh-kis-tuh-skohp]
noun Psychology.
an apparatus for use in exposing visual stimuli, as pictures, letters, or words, for an extremely brief period, used chiefly to assess visual perception or to increase reading speed.

Origin:
1905–10; < Greek táchist(os), superlative of tachýs swift + -o- + scope

tachistoscopic [tuh-kis-tuh-skop-ik] , adjective
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World English Dictionary
tachistoscope (təˈkɪstəˌskəʊp)
 
n
an instrument, used mainly in experiments on perception and memory, for displaying visual images for very brief intervals, usually a fraction of a second
 
[C20: from Greek takhistos swiftest (see tachy-) + -scope]
 
tachistoscopic
 
adj
 
tachisto'scopically
 
adv

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American Heritage
Medical Dictionary

tachistoscope ta·chis·to·scope (tā-kĭs'tə-skōp', tə-)
n.
An apparatus that projects a series of images onto a screen at rapid speed to test visual perception, memory, and learning.


ta·chis'to·scop'ic (-skŏp'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
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