Suspiciousness perception in dynamic scenes: a comparison of CCTV operators and novices.
Suspiciousness perception in dynamic scenes: a comparison of CCTV operators and novices.
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DOI：
10.3389/fnhum.2013.00441
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发表时间：
2013
影响因子：
2.9
通讯作者：
Hogg DC
中科院分区：
文献类型：
--
作者：
Howard CJ;Troscianko T;Gilchrist ID;Behera A;Hogg DC
场景的感知通常通过使用静态或简化的视觉显示来研究。注意力是如何被用来感知和评估动态的，现实的场景是更少的理解，部分原因是比较眼睛固定的问题，以移动刺激跨观察者。当任务和刺激在观察者之间是共同的时，一致的注视位置可以指示该区域具有高的基于目标的相关性。在这里，我们调查这些问题时，观察员有一个具体的，自然的，任务：闭路电视（CCTV）监测。当不同的观察者观看来自真实的闭路电视录像的同一组片段时，我们同时记录了眼球运动和感知可疑度的评级。训练有素的闭路电视操作员表现出更大的一致性，在固定位置和更大的一致性，可疑的判断比未经培训的观察员。培训似乎通过学习“知道在这些场景中要寻找什么”来增加操作员之间的一致性。我们使用了一种新的“动态聚焦区域（Dynamic Area of Focus，简称DAF）”分析来表明，在CCTV监控中，眼球运动和随后的手动响应之间存在时间关系，正如我们之前在体育视频观看任务中所发现的那样。对于受过训练的CCTV操作员和未经训练的观察员，手动响应是最高度相关的观察员之间的眼睛位置传播时，引入固定和响应数据之间的时间滞后。在观察者之间的眼睛位置变得最相似的几百毫秒后，观察者倾向于推动操纵杆来表示感知到的怀疑。相反，在观察者之间的眼睛位置变得不一样之后的几百毫秒，观察者倾向于将怀疑度评定为低。这些数据提供了进一步的支持，这种方法作为一个重要的工具，检查目标导向的固定行为时，刺激是一个真实的运动图像。
Perception of scenes has typically been investigated by using static or simplified visual displays. How attention is used to perceive and evaluate dynamic, realistic scenes is more poorly understood, in part due to the problem of comparing eye fixations to moving stimuli across observers. When the task and stimulus is common across observers, consistent fixation location can indicate that that region has high goal-based relevance. Here we investigated these issues when an observer has a specific, and naturalistic, task: closed-circuit television (CCTV) monitoring. We concurrently recorded eye movements and ratings of perceived suspiciousness as different observers watched the same set of clips from real CCTV footage. Trained CCTV operators showed greater consistency in fixation location and greater consistency in suspiciousness judgements than untrained observers. Training appears to increase between-operators consistency by learning “knowing what to look for” in these scenes. We used a novel “Dynamic Area of Focus (DAF)” analysis to show that in CCTV monitoring there is a temporal relationship between eye movements and subsequent manual responses, as we have previously found for a sports video watching task. For trained CCTV operators and for untrained observers, manual responses were most highly related to between-observer eye position spread when a temporal lag was introduced between the fixation and response data. Several hundred milliseconds after between-observer eye positions became most similar, observers tended to push the joystick to indicate perceived suspiciousness. Conversely, several hundred milliseconds after between-observer eye positions became dissimilar, observers tended to rate suspiciousness as low. These data provide further support for this DAF method as an important tool for examining goal-directed fixation behavior when the stimulus is a real moving image.
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影响因子：
8.2
作者：
Greene MR;Oliva A
通讯作者：
Oliva A
影响因子：
3.5
作者：
Howard CJ;Troscianko T;Gilchrist ID
通讯作者：
Gilchrist ID
影响因子：
2.6
作者：
Haider, H;Frensch, PA
通讯作者：
Frensch, PA
影响因子：
1.8
作者：
Lo, Shih-Yu;Howard, Christina J.;Holcombe, Alex O.
通讯作者：
Holcombe, Alex O.
影响因子：
2.6
作者：
Cooper, Robbie;Howard, Christina J.;Munafo, Marcus R.
通讯作者：
Munafo, Marcus R.