School of Psychological Sciences, University of Melbourne, Carlton, Victoria 3010, Australia.
Neuron. 2012 Sep 20;75(6):1122-34. doi: 10.1016/j.neuron.2012.08.020.
The interaction between episodic retrieval and visual attention is relatively unexplored. Given that systems mediating attention and episodic memory appear to be segregated, and perhaps even in competition, it is unclear how visual attention is recruited during episodic retrieval. We investigated the recruitment of visual attention during the suppression of gist-based false recognition, the tendency to falsely recognize items that are similar to previously encountered items. Recruitment of visual attention was associated with activity in the dorsal attention network. The inferior parietal lobule, often implicated in episodic retrieval, tracked veridical retrieval of perceptual detail and showed reduced activity during the engagement of visual attention, consistent with a competitive relationship with the dorsal attention network. These findings suggest that the contribution of the parietal cortex to interactions between visual attention and episodic retrieval entails distinct systems that contribute to different components of the task while also suppressing each other.
情景检索和视觉注意之间的相互作用相对来说还没有被充分研究。鉴于介导注意力和情景记忆的系统似乎是分开的，甚至可能存在竞争，因此尚不清楚在情景检索过程中如何招募视觉注意力。我们研究了在抑制基于要点的错误识别过程中视觉注意力的招募情况，即错误地识别出与之前遇到的项目相似的项目的倾向。视觉注意力的招募与背侧注意网络的活动有关。顶下小叶（inferior parietal lobule）通常与情景检索有关，它跟踪知觉细节的真实检索，并且在视觉注意力的参与过程中表现出活动减少，这与与背侧注意网络的竞争关系一致。这些发现表明，顶叶皮层对视觉注意和情景检索之间相互作用的贡献需要不同的系统，这些系统对任务的不同组成部分做出贡献，同时也相互抑制。
