Wackermann Jiří
Department of Empirical and Analytical Psychophysics, Institute for Frontier Areas of Psychology and Mental Health, Freiburg i. Br., Germany.
Acta Neurobiol Exp (Wars). 2012;72(4):412-20. doi: 10.55782/ane-2012-1912.
Subjective estimates of lengths or areas in the visual field depend on the visual contents of the estimated space (filled/empty or Oppel-Kundt illusion). We studied the dependence of this phenomenon on the presentation mode (white on black vs. black on white background), and on the figure/ground contrast. We found, as expected, overestimation of the filled part of the figure for both contrast polarities. The expansion effect was found to be an increasing function of the absolute luminance contrast, and was consistently higher for the negative (luminant figures on a dark background) than for the positive polarity. The contrast factor contributes from one-fifth to one-third of the total effect. Possible interpretations in terms of known sensory phenomena (irradiation, lateral interactions) or higher, integrative functions are discussed.
视野中长度或面积的主观估计取决于被估计空间的视觉内容（填充/空白或奥佩尔-昆特错觉）。我们研究了这种现象对呈现模式（白底黑字与黑底白字）以及图形/背景对比度的依赖性。正如预期的那样，我们发现对于两种对比度极性，图形的填充部分都被高估。扩展效应被发现是绝对亮度对比度的递增函数，并且负极性（深色背景上的发光图形）始终比正极性更高。对比度因素对总效应的贡献为五分之一到三分之一。我们讨论了根据已知的感官现象（辐照、侧向相互作用）或更高层次的整合功能进行的可能解释。
