State Key Laboratory of Brain and Cognitive Science, CAS Center for Excellence in Brain Science and Intelligence Technology, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.
Department of Psychology, University of Chinese Academy of Sciences, Beijing, China.
Elife. 2021 Jun 4;10:e65118. doi: 10.7554/eLife.65118.
Temporal regularity is ubiquitous and essential to guiding attention and coordinating behavior within a dynamic environment. Previous researchers have modeled attention as an internal rhythm that may entrain to first-order regularity from rhythmic events to prioritize information selection at specific time points. Using the attentional blink paradigm, here we show that higher-order regularity based on rhythmic organization of contextual features (pitch, color, or motion) may serve as a temporal frame to recompose the dynamic profile of visual temporal attention. Critically, such attentional reframing effect is well predicted by cortical entrainment to the higher-order contextual structure at the delta band as well as its coupling with the stimulus-driven alpha power. These results suggest that the human brain involuntarily exploits multiscale regularities in rhythmic contexts to recompose dynamic attending in visual perception, and highlight neural entrainment as a central mechanism for optimizing our conscious experience of the world in the time dimension.
时间规律性无处不在，对于在动态环境中引导注意力和协调行为至关重要。先前的研究人员将注意力建模为一种内部节奏，这种节奏可能与来自节奏事件的一阶规律性同步，以便在特定时间点优先选择信息。使用注意瞬脱范式，我们在这里表明，基于上下文特征（音高、颜色或运动）的节奏组织的更高阶规律性可以作为一个时间框架，重新组合视觉时间注意力的动态分布。至关重要的是，这种注意力重构效应很好地预测了皮层对更高阶上下文结构的 delta 频段的同步，以及它与刺激驱动的阿尔法功率的耦合。这些结果表明，人类大脑无意识地利用节奏环境中的多尺度规律性来重新构建视觉感知中的动态注意力，并强调神经同步作为优化我们在时间维度上对世界的有意识体验的核心机制。
