AN ANALYSIS OF PERCEPTUAL AND COGNITIVE-FACTORS IN RADIOGRAPHIC INTERPRETATION
AN ANALYSIS OF PERCEPTUAL AND COGNITIVE-FACTORS IN RADIOGRAPHIC INTERPRETATION
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DOI：
10.1068/p090339
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发表时间：
1980-01-01
期刊：
影响因子：
1.7
通讯作者：
KUNDEL, HL
中科院分区：
文献类型：
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作者：
CARMODY, DP;NODINE, CF;KUNDEL, HL
在速示镜观察条件下研究了胸部X线片中小肿瘤的检测，速示镜观察条件旨在模拟自由搜索中发现的不同停留时间的单次固定。提出了两个问题：检测结节需要多长停留时间（实验1）？如何有效的外周输入检测结节（实验2）？我们的研究结果表明，300 ms的停留时间足以检测85%的结节时，他们被直接查看。当肿瘤位于注视轴5°时，检测准确性降低一半。结合眼动实验的数据，这些结果为视觉搜索的感知和认知参数提供了有用的估计。
Detection of small tumors in chest x-ray films was studied under tachistoscopic viewing conditions designed to simulate single fixations varying in dwell time, found in free search. Two questions were asked: How much dwell time is required to detect a nodule (experiment 1)?How effective are peripheral inputs in the detection of a nodule (experiment 2)? Our findings indicate that a dwell time of 300 ms was sufficient to detect 85% of the nodules when they were viewed directly. Detection accuracy was reduced by one-half when the tumor was located 5° from the axis of gaze. Taken together with data from eye movement experiments, these results provide useful estimates of perceptual and cognitive parameters of visual search.