Frequency thresholds for two-flash flicker and critical flicker: Why they differ
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چکیده
منابع مشابه
Critical Flicker Frequency and Intelligence*
Tests of verbal intellegence (Concept Mastery Test) and nonverbal intelligence (Raven's Advanced Progressive Matrices) showed nonsignificant zero-order correlations and a nonsignificant multiple correlation with critical flicker frequency (CFF), in 100 university students. Age-partialled correlations were even lower, and corrections for attenuation and restriction of range yielded unimpressive ...
متن کاملIntensity and Critical Frequency for Visual Flicker
Using the rotating striped cylinder device previously employed for determination of the flicker response function with lower animals, corresponding measurements have been made with human observers. The curves based upon the relation between critical flash frequency and critical intensity for the signalling of the recognition of flicker have the properties of human flicker fusion data as obtaine...
متن کاملCritical flicker frequency and centrally-acting drugs.
THE critical flicker frequency (cff) may be defined as the fastest rate at which a flickering source of light appears to be flickering as opposed to being steady. It has a number of determinants including the luminance, wave-length, wave-form, and light-dark ratio of the stimulating light, the area, position, and light-adapted state of the retina illuminated, the duration of exposure, and the s...
متن کاملCritical Illumination and Flicker Frequency, as a Function of Flash Duration: for the Sunfish
From the relations between critical illumination in a flash (I(m)) and the flash frequency (F) for response of the sunfish to visual flicker when the proportion of light time to dark time (t(L)/t(D)) in a flicker cycle is varied at one temperature (21.5 degrees ) the following results are obtained: At values of t(L)/t(D) between 1/9 and 9/1 the F - log I(m) curves are progressively shifted towa...
متن کاملVisual experience can substantially alter critical flicker fusion thresholds.
Studies of psychopharmacology often use the test of the critical flicker fusion (CFF) threshold as a measure of total information processing. It is true that studies of practice effects have shown that CFF thresholds are remarkably stable within and across multiple days of testing. This study confirms that subjects who undergo CFF testing on sequential days have stable thresholds, but also demo...
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ژورنال
عنوان ژورنال: Perception & Psychophysics
سال: 1974
ISSN: 0031-5117,1532-5962
DOI: 10.3758/bf03205832