Department of Neurobiology, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, United States; Jules Stein Eye Institute, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, United States; Department of Psychology and the Brain Research Institute, UCLA, Los Angeles, CA 90095, United States.
Department of Neurobiology, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, United States.
Curr Opin Psychol. 2019 Oct;29:108-112. doi: 10.1016/j.copsyc.2019.01.002. Epub 2019 Jan 11.
The term priority map is commonly used to describe a map of the visual scene, in which objects and locations are represented by their attentional priority, which itself is a combination of low-level salience and top-down control. The aim of this review is to examine how such a map may be represented at the neuronal level. We propose that there is not a single, common map in the brain, but that a number of cortical areas work together to generate the resultant behavior. Specifically, we suggest that the lateral intraparietal area (LIP) of posterior parietal cortex provides a simple representation of attentional priority, which remaps across saccades, so that there is an apparent allocentric map in a region with retinocentric encoding scheme. We propose that the frontal eye field (FEF) of prefrontal cortex receives the responses from LIP, but can suppress them to control the flow of eye movement behavior, and that the intermediate layers of the superior colliculus (SCi) reflect the final saccade goal. Together, these areas function to guide eye movements and may play a similar role in allocating covert visual attention.
术语“优先图”通常用于描述视觉场景的地图，其中对象和位置通过其注意力优先级来表示，而注意力优先级本身是低水平显著性和自上而下控制的组合。本综述的目的是研究这种地图如何在神经元水平上表示。我们提出，大脑中没有一个单一的、通用的地图，而是有许多皮层区域共同作用以产生最终的行为。具体来说，我们建议后顶叶皮层的外侧顶内区（LIP）提供注意力优先级的简单表示，该优先级在扫视过程中重新映射，因此在具有视网膜中心编码方案的区域中存在明显的无定向地图。我们提出，前额叶皮层的额眼区（FEF）接收来自 LIP 的反应，但可以抑制它们以控制眼球运动行为的流动，而高级视丘（SCi）的中间层反映最终的扫视目标。这些区域共同作用以引导眼球运动，并可能在分配隐蔽视觉注意力方面发挥类似的作用。
