Sastyin Gergo, Niimi Ryosuke, Yokosawa Kazuhiko
Department of Psychology, Graduate School of Humanities and Sociology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
Atten Percept Psychophys. 2015 Apr;77(3):856-66. doi: 10.3758/s13414-014-0817-x.
Traditional research on the scene consistency effect only used clearly recognizable object stimuli to show mutually interactive context effects for both the object and background components on scene perception (Davenport & Potter in Psychological Science, 15, 559-564, 2004). However, in real environments, objects are viewed from multiple viewpoints, including an accidental, hard-to-recognize one. When the observers named target objects in scenes (Experiments 1a and 1b, object recognition task), we replicated the scene consistency effect (i.e., there was higher accuracy for the objects with consistent backgrounds). However, there was a significant interaction effect between consistency and object viewpoint, which indicated that the scene consistency effect was more important for identifying objects in the accidental view condition than in the canonical view condition. Therefore, the object recognition system may rely more on the scene context when the object is difficult to recognize. In Experiment 2, the observers identified the background (background recognition task) while the scene consistency and object views were manipulated. The results showed that object viewpoint had no effect, while the scene consistency effect was observed. More specifically, the canonical and accidental views both equally provided contextual information for scene perception. These findings suggested that the mechanism for conscious recognition of objects could be dissociated from the mechanism for visual analysis of object images that were part of a scene. The "context" that the object images provided may have been derived from its view-invariant, relatively low-level visual features (e.g., color), rather than its semantic information.
传统的场景一致性效应研究仅使用清晰可辨的物体刺激来展示物体和背景成分在场景感知上的相互交互的情境效应(达文波特和波特,《心理科学》,第15卷,第559 - 564页,2004年)。然而,在现实环境中,物体是从多个视角观看的,包括偶然的、难以识别的视角。当观察者在场景中命名目标物体时(实验1a和1b,物体识别任务),我们重现了场景一致性效应(即具有一致背景的物体识别准确率更高)。然而,一致性和物体视角之间存在显著的交互效应,这表明场景一致性效应在偶然视角条件下识别物体比在标准视角条件下更重要。因此,当物体难以识别时,物体识别系统可能更多地依赖于场景上下文。在实验2中,观察者在操控场景一致性和物体视角的同时识别背景(背景识别任务)。结果表明,物体视角没有影响,而观察到了场景一致性效应。更具体地说,标准视角和偶然视角都同样为场景感知提供了上下文信息。这些发现表明,物体的有意识识别机制可能与作为场景一部分的物体图像的视觉分析机制相分离。物体图像提供的“上下文”可能源自其视角不变的、相对低层次的视觉特征(如颜色),而非其语义信息。