Visual orientation by motion-produced blur patterns: Detection of divergence
Visual orientation by motion-produced blur patterns: Detection of divergence
复制标题
通过运动产生的模糊模式进行视觉定向：发散检测
DOI：
10.3758/bf03204388
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发表时间：
1980
期刊：
影响因子：
--
通讯作者：
Y. Koh
中科院分区：
文献类型：
--
作者：
T. L. Harrington;M. K. Harrington;C. Wilkins;Y. Koh
模糊模式是光化学和神经活动的生理“条纹”，每当观察者和他的视觉环境处于相对运动时就会发生。当视网膜速度很高时，视觉“流动”的印象让位于一个“模糊线”的领域，其图案富含关于运动和产生它们的光学纹理的信息。模拟模糊模式产生和阈值测量的检测在九个视网膜位点的分歧。中央视网膜的敏感度稍高。阈值保持不变，尽管变化的模式速度，元素的数量，和存在或不存在的内部速度梯度。观察员能够定位阈值以上的模式，但始终低估了倾斜量。
Blur patterns are physiological “streaks” of photochemical and neural activity that occur whenever an observer and his visual environment are in relative motion. When retinal velocities are high, the impression of visual “flow” gives way to one of a field of “blur lines” whose patterns are rich with information about the motions and the optical textures that produced them. Simulated blur patterns were produced and thresholds measured for the detection of divergence at nine retinal loci. Sensitivity was somewhat greater in the central retina. Thresh-olds remained the same despite variations in pattern velocity, number of elements, and the presence or absence of an internal velocity gradient. Observers were able to orient above-threshold patterns, but consistently underestimated the amount of slant.