Results 181 to 190 of about 3,572 (238)
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The Journal of Genetic Psychology, 1955
(1955). Flicker Fusion in the Rat. The Journal of Genetic Psychology: Vol. 87, No. 2, pp. 257-264.
M G, GOLDZBAND, G, CLARK
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(1955). Flicker Fusion in the Rat. The Journal of Genetic Psychology: Vol. 87, No. 2, pp. 257-264.
M G, GOLDZBAND, G, CLARK
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Phase Relations in Flicker Fusion
Journal of the Optical Society of America, 1962The luminance at which the flicker of a white test light was perceived was determined as a function of the phase angle between the light and pulsing white, green, yellow, red, and blue surround fields which were equated for brightness. It was found that the luminance thresholds for perceived flicker increased when the test light and the surround were ...
S M, LURIA, H G, SPERLING
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Flicker fusion thresholds in pregnancy
American Journal of Obstetrics and Gynecology, 1952Abstract 1. 1. A brief review of pertinent physiology in flicker phenomena is presented. 2. 2. The results of a study of 118 gravid women and 465 flicker fusion tests are presented and analyzed. 3. 3. A false-positive result is noted in 14 per cent and a false-negative in 3.3 per cent. 4. 4.
J P, MARTY, J A, HARDY
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Science, 1959
Brown and Forsyth have recently performed a flicker-fusion experiment showing clearly that there is more to flicker than meets the eye. This report presents an analysis of their results which indicates the likelihood that at fusion threshold all but one of the Fourier components of their presentation are imperceptible.
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Brown and Forsyth have recently performed a flicker-fusion experiment showing clearly that there is more to flicker than meets the eye. This report presents an analysis of their results which indicates the likelihood that at fusion threshold all but one of the Fourier components of their presentation are imperceptible.
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Science, 1960
Flicker waveform has been found to have a slight but specific effect upon fusion threshold. A depression of threshold amplitude of about 30 percent occurs if a second harmonic of near-threshold amplitude is added to the fundamental. The magnitude of the depression depends critically on the relative phase of the two components of the waveform.
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Flicker waveform has been found to have a slight but specific effect upon fusion threshold. A depression of threshold amplitude of about 30 percent occurs if a second harmonic of near-threshold amplitude is added to the fundamental. The magnitude of the depression depends critically on the relative phase of the two components of the waveform.
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Science, 1968
The high-frequency temporal behavior of the human visual system has been shown to have some of the properties of a linear low-pass filter. For such a system it is appropriate to consider a repetitive stimulus as having separable Fourier harmonic components.
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The high-frequency temporal behavior of the human visual system has been shown to have some of the properties of a linear low-pass filter. For such a system it is appropriate to consider a repetitive stimulus as having separable Fourier harmonic components.
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Documenta Ophthalmologica, 1964
The author reviews several phenomena occurring in sine wave flicker experiments, classifying them into low-frequency (below 10 cps) and highfrequency (above 20 cps) effects, and suggests that two different, kinds of mechanisms are needed to account for the behavior of amplitude sensitivity curves in these two frequency ranges.
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The author reviews several phenomena occurring in sine wave flicker experiments, classifying them into low-frequency (below 10 cps) and highfrequency (above 20 cps) effects, and suggests that two different, kinds of mechanisms are needed to account for the behavior of amplitude sensitivity curves in these two frequency ranges.
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Critical flicker fusion in Siamese cats
Experimental Brain Research, 1981Critical flicker fusion was determined over a wide luminance range for six Siamese and four normal cats. The Siamese cats had the lowest CFF at all luminance levels when compared to normal and binocularly deprived (BD) cats. The Siamese cat's inferior temporal resolution is most likely due to their profound y-cell loss because (1) CFF is proportional ...
M S, Loop, T J, Frey
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Effects of Fasting on Visual Flicker Fusion
Perceptual and Motor Skills, 1989Two experiments are reported which investigated the effects of fasting on visual flicker fusion (VFF). In Exp. 1 the VFF of 40 undergraduate students, 20 men and 20 women, whose mean age was 22.5 yr., was measured in nonfasting conditions 1 to 2 weeks before and in fasting conditions during the Muslim fasting month of Ramadan. In Exp.
M R, Ali, T, Amir
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American Journal of Ophthalmology, 1950
MANY attempts have been made in the past to alter the usual technic of taking visual fields in an effort to detect the earliest changes due to glaucoma. Some have reduced the illumination (Bair,11940; Marlow,21947; Mann and Sharpley,31947). Others (Derby, Waite and Kirk,41926; Derby, Chandler and O'Brien,51928) found that the light threshold and the ...
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MANY attempts have been made in the past to alter the usual technic of taking visual fields in an effort to detect the earliest changes due to glaucoma. Some have reduced the illumination (Bair,11940; Marlow,21947; Mann and Sharpley,31947). Others (Derby, Waite and Kirk,41926; Derby, Chandler and O'Brien,51928) found that the light threshold and the ...
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