Increment and Decrement Visual Thresholds
JOSA, Vol. 58, Issue 5, pp. 696-699 (1968)
http://dx.doi.org/10.1364/JOSA.58.000696
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Abstract
Increment and decrement contrast thresholds have been measured for stimuli 15 min to 4.3° diam and repeated durations of 20 to 1000 msec. The fixation point was 7° from the fovea. The increment threshold was consistently greater than decrement threshold.
Citation
A. S. PATEL and R. W. JONES, "Increment and Decrement Visual Thresholds," J. Opt. Soc. Am. 58, 696-699 (1968)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-58-5-696
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