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Relation between simultaneous spatial-discrimination thresholds and luminance in man.

作者信息

Reymond L, Cook M

出版信息

Behav Brain Res. 1984 Oct;14(1):51-9. doi: 10.1016/0166-4328(84)90019-6.

DOI:10.1016/0166-4328(84)90019-6
PMID:6518080
Abstract

Simultaneous spatial-discrimination thresholds of 6 human subjects were measured at luminances between 0.2 and 2000 cd/m2. Subjects were tested on a forced-choice discrimination task which required them to distinguish between test and control stimuli of high contrast square-wave gratings with similar space-average luminances. The form of the function depicting the relationship between acuity and luminance is similar to that obtained by other researchers. The estimated maximum acuity of 72 cycles/degree (c/deg) is higher than the commonly cited value of 60 c/deg and this is probably due to the combination of the high stimulus luminance and the psychophysical technique employed in this study.

摘要

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