Luminance of Optical System in Flicker Value Apparatus
نویسندگان
چکیده
منابع مشابه
Interactions between flicker thresholds and luminance pedestals
We investigated the interactions between flicker thresholds and luminance pedestals using threshold versus contrast (TvC) and method of constant stimuli paradigms. High amplitude luminance pedestals were found to elevate flicker thresholds, but low amplitude luminance pedestals were unable to reduce flicker thresholds. Luminance pedestals elevated flicker thresholds more at low temporal frequen...
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PURPOSE To determine retinal vessel diameter variations in response to neuronal activity induced by diffuse luminance flicker. METHODS The diameter of retinal arteries and veins was measured in 9 normal subjects by computer analysis of fundus pictures taken in monochromatic light under normal conditions of illumination and after 1 min of sinusoidally varying diffuse luminance flicker at 10 Hz...
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Effect of eccentricity on luminance-pedestal flicker thresholds
We investigated the effect that spatially coincident luminance increments (luminance pedestals) have on flicker thresholds at several eccentricities and target sizes. Luminance pedestals elevated flicker amplitude-thresholds more when stimuli were presented eccentrically, both at low (4 Hz) and high (20 Hz) temporal frequencies. Altering the size of the eccentric stimulus failed to equate centr...
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ژورنال
عنوان ژورنال: JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN
سال: 1977
ISSN: 0019-2341,1349-838X,2185-1506
DOI: 10.2150/jieij1917.61.3_152