Abstract

When freely viewing a scene, the eyes often return to previously visited locations. By tracking eye movements and coregistering eye movements and EEG, such refixations are shown to have multiple roles: repairing insufficient encoding from precursor fixations, supporting ongoing viewing by resampling relevant locations prioritized by precursor fixations, and aiding the construction of memory representations. All these functions of refixation behavior are understood to be underpinned by three oculomotor and cognitive systems and their associated brain structures. First, immediate saccade planning prior to refixations involves attentional selection of candidate locations to revisit. This process is likely supported by the dorsal attentional network. Second, visual working memory, involved in maintaining task-related information, is likely supported by the visual cortex. Third, higher-order relevance of scene locations, which depends on general knowledge and understanding of scene meaning, is likely supported by the hippocampal memory system. Working together, these structures bring about viewing behavior that balances exploring previously unvisited areas of a scene with exploiting visited areas through refixations.

中文翻译：

---

自然观看中的再固定行为：方法、机制和神经相关性

摘要

当自由观看场景时，眼睛经常会回到之前访问过的位置。通过跟踪眼球运动并协调眼球运动和脑电图，这种重新注视被证明具有多种作用：修复前体注视的不足编码，通过对前体注视优先的相关位置进行重新采样来支持持续观看，以及帮助构建记忆表征。所有这些再固定行为的功能都被认为是由三个动眼神经和认知系统及其相关的大脑结构支撑的。首先，重新注视之前的立即扫视计划涉及注意选择要重新访问的候选位置。这个过程很可能得到背侧注意力网络的支持。其次，参与维护任务相关信息的视觉工作记忆可能由视觉皮层支持。第三，场景位置的高阶相关性取决于一般知识和对场景含义的理解，很可能得到海马记忆系统的支持。这些结构共同作用，带来的观看行为可以平衡探索场景中以前未访问过的区域与通过重新固定来利用访问过的区域。