Task-dependence in scene perception: Head unrestrained viewing using mobile eye-tracking
Task-dependence in scene perception: Head unrestrained viewing using mobile eye-tracking
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DOI：
10.1167/jov.20.5.3
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发表时间：
2020-05-01
影响因子：
1.8
通讯作者：
Trukenbrod, Hans A.
中科院分区：
文献类型：
--
作者：
Backhaus, Daniel;Engbert, Ralf;Trukenbrod, Hans A.
真实世界的场景感知通常是在实验室中使用限制头部位置的静态图像观看来研究的。因此，将在这一范例中获得的结果转移到现实世界的情景中受到了质疑。然而，移动眼球跟踪器的进步和图像处理的进步允许更自然的实验设置，同时保持标准实验室设置的高实验控制。我们调查了参与者站在投影仪屏幕前时的眼球运动，并在四个特定任务指令下探索图像。使用移动眼球跟踪设备记录眼球运动，并将原始凝视数据从以头部为中心的坐标转换为以图像为中心的坐标。我们观察了不同任务在时间和空间眼动参数上的差异，发现不同任务对注视中心附近图像的偏见不同。我们的结果表明，当前的移动眼球跟踪技术和高度受控的设计支持在实验环境中研究精细任务依赖关系，这种实验环境允许比静态图片观看范式更自然的观看行为。
Real-world scene perception is typically studied in the laboratory using static picture viewing with restrained head position. Consequently, the transfer of results obtained in this paradigm to real-word scenarios has been questioned. The advancement of mobile eye-trackers and the progress in image processing, however, permit a more natural experimental setup that, at the same time, maintains the high experimental control from the standard laboratory setting. We investigated eye movements while participants were standing in front of a projector screen and explored images under four specific task instructions. Eye movements were recorded with a mobile eye-tracking device and raw gaze data were transformed from head-centered into image-centered coordinates. We observed differences between tasks in temporal and spatial eye-movement parameters and found that the bias to fixate images near the center differed between tasks. Our results demonstrate that current mobile eye-tracking technology and a highly controlled design support the study of fine-scaled task dependencies in an experimental setting that permits more natural viewing behavior than the static picture viewing paradigm.