Results 241 to 250 of about 32,031 (301)

Critical flicker frequency and cortical alpha

Electroencephalography and Clinical Neurophysiology, 1956
The purpose of this pape r is to check the s t a r t l i ng ly high correlation (0.855) which C. Chyat te (1954) has found between critical flicker f requency and a lpha index. Chya t te ' s work was carr ied out in our labora tory three years ago with the same equipment as used in this s tudy and in a previous one by F. P. Fr iedl (1954).
A, DONDERO, P R, HOFSTAETTER, J P, O'CONNOR   +2 more
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Sex Differences in Critical Flicker Frequency

Perceptual and Motor Skills, 1982
In a sample of 101 subjects 42 men showed significantly higher CFFs than 59 women. This is contrary to the prediction of Broverman, et al. and differs from the results of Misiak, who reported no sex difference. The findings were discussed in relation to the organizational hypothesis of Phoenix, et al.
N, Ginsburg, M, Jurenovskis, J, Jamieson
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Relationship Between Critical Flicker Frequency and Age in Flicker Perimetry

Archives of Ophthalmology, 1964
Introduction In flicker perimetry, a test target well above the limits of visibility with regard to size and luminance is presented at various fixed positions of the visual field. The frequency of the flickering target is lowered from fusion to a level at which flicker becomes perceptible.
E, WOLF, A M, SCHRAFFA
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Critical flicker frequency in monocularly deprived cats

Behavioural Brain Research, 1982
Critical flicker frequency (CFF) was determined for both eyes of long-term monocularly deprived (MD) cats over a wide luminance range. Although MD cats could discriminate flicker before and after lid opening, CFF of the deprived eye (30 Hz) was much lower than CFF of the non-deprived eye (40 Hz) and the CFF of the non-deprived eye was lower than a ...
M S, Loop, T J, Frey
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Critical Flicker Frequency and Auditory Stimuli - Procedure Settings

2022 IEEE Industry Applications Society Annual Meeting (IAS), 2022
This paper is concerned with the design of experiments aimed at determining whether the critical flicker frequency (CFF) is subject to change when the observer is exposed to pulsating sounds. The paper describes the work done in designing the experiments and also reveals data from a preliminary campaign.
Leoš Kukačka, Michaela Chmelařová, Jan Hergesel, Pascal Dupuis, Georges Zissis   +4 more
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Critical flicker frequency responses in visual cortex

Experimental Brain Research, 2001
Critical flicker frequency (CFF) threshold is defined as the frequency at which a flickering light is indistinguishable from a steady, non-flickering light. CFF is useful for assessing the temporal characteristics of the visual system. While CFF responses are believed to reflect activity in the central visual system, little is known about how these ...
E F, Wells, G M, Bernstein, B W, Scott, P J, Bennett, J R, Mendelson   +4 more
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CRITICAL FLICKER FREQUENCY AND THE PULFRICH PHENOMENON

Optometry and Vision Science, 1975
The critical flicker frequency and the Pulfrich stereophenomenon were both used to investigate the long term effects on temporal resolution and visual latency of wearing a tinted lens in front of one eye for a period of five days. The results obtained from three subjects showed that in every case the critical flicker frequency was depressed by the ...
W A, Douthwaite, L C, Morrison
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Photic Driving of the Critical Flicker Frequency*

Journal of the Optical Society of America, 1961
A light pulsing above the critical flicker frequency (CFF) significantly elevates, and one pulsing below CFF significantly depresses, subsequent CFF measurements. The characteristics of these phenomena, their dependence upon the duration of fixation, the luminance of the measuring and the adaptation lights, and the duration of the after-effect are ...
M, ALPERN, S, SUGIYAMA
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Size-Constancy and Critical Flicker-Frequency

The American Journal of Psychology, 1964
Investigations of size-constancy have almost invariably employed direct judgments or estimates by Os of size or distance as dependent variables.' It was the purpose of the current experiment to determine whether sizeconstancy was demonstrable in a situation which required no such subjective estimation per se.
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Impaired critical flicker frequency in recovered optic neuritis

Annals of Neurology, 1991
AbstractThirteen patients with optic neuritis who recovered normal visual acuity and kinetic perimetry all showed impairment of foveal critical flicker frequency, a psychophysical test of visual temporal resolution. Because the magnocellular visual system demonstrates higher temporal resolution than the parvocellular system, this finding implicates ...
D M, Jacobson, K A, Olson
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