Anderson Nicola C, Donk Mieke, Meeter Martijn
Department of Cognitive Psychology, VU University Amsterdam, Van der Boechorststraat 1, 1081 BT, Amsterdam, The Netherlands.
Department of Education Science, VU University Amsterdam, Amsterdam, The Netherlands.
Psychon Bull Rev. 2016 Dec;23(6):1794-1801. doi: 10.3758/s13423-016-1035-4.
Rich contextual and semantic information can be extracted from only a brief presentation of a natural scene. This is presumed to be activated quickly enough to guide initial eye movements into a scene. However, early, short-latency eye movements in natural scenes have been shown to be dependent on the salience distribution across the image (Anderson, Ort, Kruijne, Meeter, & Donk, 2015). In the present work, we manipulated the salience distribution across a natural scene by changing the global contrast. We showed participants a brief real or nonsense preview of the scene and examined the time-course of eye movement guidance. A real preview decreased the latency and increased the amplitude of initial saccades into the image, suggesting that the preview allowed observers to obtain additional contextual information that would otherwise not be available. However, the preview did not completely override the initial tendency for short-latency saccades to be guided by the underlying salience distribution of the image. We discuss these findings in the context of oculomotor selection based on the integration of contextual information and low-level features in a natural scene.
仅从自然场景的简短呈现中就能提取丰富的上下文和语义信息。据推测，这种信息能被足够快地激活，以引导最初的眼动进入场景。然而，研究表明，自然场景中早期的短潜伏期眼动依赖于图像上的显著性分布（安德森、奥尔特、克鲁伊内、米特和唐克，2015年）。在本研究中，我们通过改变全局对比度来操纵自然场景中的显著性分布。我们向参与者展示场景的简短真实或无意义预览，并检查眼动引导的时间进程。真实预览减少了进入图像的初始扫视潜伏期并增加了其幅度，这表明预览使观察者能够获得否则无法获得的额外上下文信息。然而，预览并没有完全克服短潜伏期扫视最初由图像潜在显著性分布引导的倾向。我们在基于自然场景中上下文信息和低级特征整合的眼动选择背景下讨论这些发现。
