Foulsham Tom, Alan Rana, Kingstone Alan
Department of Psychology, University of Essex, Wivenhoe Park, Colchester CO4 3SQ, England, UK.
Atten Percept Psychophys. 2011 Oct;73(7):2008-25. doi: 10.3758/s13414-011-0158-y.
Previous research has demonstrated that search and memory for items within natural scenes can be disrupted by "scrambling" the images. In the present study, we asked how disrupting the structure of a scene through scrambling might affect the control of eye fixations in either a search task (Experiment 1) or a memory task (Experiment 2). We found that the search decrement in scrambled scenes was associated with poorer guidance of the eyes to the target. Across both tasks, scrambling led to shorter fixations and longer saccades, and more distributed, less selective overt attention, perhaps corresponding to an ambient mode of processing. These results confirm that scene structure has widespread effects on the guidance of eye movements in scenes. Furthermore, the results demonstrate the trade-off between scene structure and visual saliency, with saliency having more of an effect on eye guidance in scrambled scenes.
先前的研究表明，自然场景中物体的搜索和记忆会因图像“加扰”而受到干扰。在本研究中，我们探讨了通过加扰破坏场景结构如何影响搜索任务（实验1）或记忆任务（实验2）中的眼动注视控制。我们发现，加扰场景中的搜索能力下降与眼睛对目标的引导较差有关。在这两项任务中，加扰导致注视时间缩短、扫视时间延长，以及更分散、选择性更低的外显注意力，这可能对应于一种环境处理模式。这些结果证实，场景结构对场景中眼动的引导具有广泛影响。此外，结果表明场景结构与视觉显著性之间存在权衡，显著性在加扰场景中对眼动引导的影响更大。
