Osugi Takayuki, Murakami Ikuya
Department of Psychology, The University of Tokyo, Tokyo, Japan; Japan Society for the Promotion of Science, Tokyo, Japan.
Department of Psychology, The University of Tokyo, Tokyo, Japan.
Vision Res. 2019 Mar;156:56-65. doi: 10.1016/j.visres.2018.12.009. Epub 2019 Feb 2.
When some distractors (old items) are presented prior to others (new items) during an inefficient visual search task, search becomes easier, as though observers were able to exclude the old items from the search. This phenomenon, called preview benefit, occurs when the locations of the old items are deprioritized relative to the locations of the new items, through a process of visual marking. It has been demonstrated that preview benefit persists when the old items move on the display, if the spatial relationships among the old items remain unchanged, suggesting that the memory template for visual marking represents the spatial configuration of the old items. One remaining question is whether the configuration is coded in two- or three-dimensional coordinates. In the present study, we examined whether preview benefit was preserved when all items were graphically rendered in three-dimensional coordinates and rigidly rotated around the vertical axis at a constant angular velocity. Preview benefit occurred in this situation, suggesting that the memory template for visual marking represents the spatial configuration in three-dimensional coordinates.
在低效的视觉搜索任务中,当一些干扰项(旧项目)先于其他干扰项(新项目)呈现时,搜索会变得更容易,就好像观察者能够将旧项目从搜索中排除一样。这种现象被称为预览效益,当旧项目的位置相对于新项目的位置通过视觉标记过程被降低优先级时就会出现。已经证明,如果旧项目之间的空间关系保持不变,那么当旧项目在显示屏上移动时,预览效益仍然存在,这表明视觉标记的记忆模板代表了旧项目的空间配置。剩下的一个问题是这种配置是用二维还是三维坐标编码的。在本研究中,我们研究了当所有项目都以三维坐标进行图形渲染并绕垂直轴以恒定角速度进行刚性旋转时,预览效益是否仍然存在。在这种情况下出现了预览效益,这表明视觉标记的记忆模板代表了三维坐标中的空间配置。