Cognitive & Affective Psychophysiology Laboratory, Department of Experimental Clinical and Health Psychology, Ghent University, Ghent, Belgium.
Cognitive & Affective Psychophysiology Laboratory, Department of Experimental Clinical and Health Psychology, Ghent University, Ghent, Belgium; Institute of Medical Psychology and Systems Neuroscience, University of Muenster, Germany.
Biol Psychol. 2021 Jul;163:108119. doi: 10.1016/j.biopsycho.2021.108119. Epub 2021 May 18.
The neurocognitive process underlying attention switches between external (perception-based) and internal (memory-based) attention is poorly characterized. Previous research has found that when participants switch attention either between two perception-based tasks (within-domain switches) or between a memory- and a perception-based task (between-domain switches), a substantial and similar processing cost was observed compared to the repetition of the same task (Verschooren, Schindler, De Raedt, & Pourtois, 2019). Here, we recorded 64-channel EEG while participants carried out within- versus between-domain switches of attention. ERP results showed that during early sensory processing, a marked P1 attenuation was associated with both switch types, suggesting that switching was associated with an early bottleneck during information processing. This early gating effect was stronger when switching from an internal to an external task, compared to switching between external tasks, suggesting different top-down requirements for them. These findings are in line with earlier proposals in the literature.
注意在外部（基于感知）和内部（基于记忆）之间切换的神经认知过程尚未得到很好的描述。先前的研究发现，当参与者在两种基于感知的任务之间（域内切换）或在基于记忆和基于感知的任务之间（域间切换）切换注意力时，与重复相同任务相比，观察到相当大且相似的处理成本（Verschooren、Schindler、De Raedt 和 Pourtois，2019）。在这里，我们记录了参与者进行注意力域内与域间切换时的 64 通道 EEG。ERP 结果表明，在早期感觉处理过程中，标记的 P1 衰减与两种切换类型都有关联，这表明切换与信息处理过程中的早期瓶颈有关。与在外部任务之间切换相比，从内部任务切换到外部任务时，这种早期门控效应更强，这表明它们需要不同的自上而下的要求。这些发现与文献中的早期提议一致。
