1933
DOI: 10.1085/jgp.17.2.269
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Intermittent Stimulation by Light

Abstract: The Essence and Location of Flicker ChangesIn the intermittent stimulation by light the outside agent alternates abruptly between zero and the particular maximal intensity. When the frequency of this alternation is sufficiently low, the difference between these extreme conditions is completely perceptible in sensation: the brightness during the light period is maximal, and during the dark period it is zero. As the alternation frequency increases, the two sensations become less sharply delimited in time and les… Show more

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Cited by 37 publications
(11 citation statements)
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“…The flicker-fusion threshold was 14 Hz, very low on the cone-response curves reported by various investigators [ 7 , 10 16 ]. This would be expected if flash intensities were in the scotopic range, but here the ambient illumination was mesopic and the intensity was high enough to allow reliable recognition of the letters.…”
Section: Resultsmentioning
confidence: 76%
“…The flicker-fusion threshold was 14 Hz, very low on the cone-response curves reported by various investigators [ 7 , 10 16 ]. This would be expected if flash intensities were in the scotopic range, but here the ambient illumination was mesopic and the intensity was high enough to allow reliable recognition of the letters.…”
Section: Resultsmentioning
confidence: 76%
“…With increasing target radiance, the normal L-cone c.f.f. function starts to rise just above 6.5 log 10 quanta/ sec//degree 2 and then continues to rise steadily until reaching a plateau at 43 Hz (see also, eg, Hecht and Shlaer 16 and Hecht and Verrijp 17 ). The affected female shows a devastating loss of L-cone (and M-cone) mediated sensitivity; the target had to be set to almost 100 times brighter than for normal observers for the affected observer to first see flicker, and the c.f.f.…”
Section: Eyementioning
confidence: 99%
“…76 However, unlike visual acuity, higher CFF values are found outside the fovea at scotopic levels. 77 …”
Section: Spatial Frequency (Cpd) Visual Eccentricity (Deg)mentioning
confidence: 99%