Linking the Rapid Cascade of Visuo-Attentional Processes to Successful Memory Encoding.
Linking the Rapid Cascade of Visuo-Attentional Processes to Successful Memory Encoding.
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DOI：
10.1093/cercor/bhaa295
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发表时间：
2020-12
期刊：
影响因子：
3.7
通讯作者：
Benjamin R. Geib;R. Cabeza;M. Woldorff
中科院分区：
文献类型：
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作者：
Benjamin R. Geib;R. Cabeza;M. Woldorff
虽然人们普遍认为注意调节记忆，但特定的快速注意过程对成功编码的贡献在很大程度上是未知的。为了研究这个问题，我们利用脑电图记录的高时间分辨率，将视觉注意神经过程的级联与成功的编码直接联系起来：（1）N2PC（2）持续的后对侧负波（峰值~200 ms），反映了刺激特异性的注意定向和分配;（后N2 pc），其与持续的视觉处理相关，（3）振荡α功率的对侧降低（α的对侧降低> 200 ms），其也与注意力持续的视觉处理独立相关。这些视觉注意过程中的每一个都是成功编码的强有力的预测，而且，每个增强的记忆独立于经典的，较长的延迟，概念上相关的，由于记忆（Dm）效应的差异。早期潜伏期midfrontal θ功率也促进成功的编码，至少有一部分的这种影响是由后来的潜伏期Dm效应介导的。这些发现显着扩展了现有的知识，有助于阐明知觉加工的注意调制和有效的编码以后的记忆提取之间的密切关系。
While it is broadly accepted that attention modulates memory, the contribution of specific rapid attentional processes to successful encoding is largely unknown. To investigate this issue, we leveraged the high temporal resolution of electroencephalographic recordings to directly link a cascade of visuo-attentional neural processes to successful encoding: namely (1) the N2pc (peaking ~200 ms), which reflects stimulus-specific attentional orienting and allocation, (2) the sustained posterior-contralateral negativity (post-N2pc), which has been associated with sustained visual processing, (3) the contralateral reduction in oscillatory alpha power (contralateral reduction in alpha > 200 ms), which has also been independently related to attentionally sustained visual processing. Each of these visuo-attentional processes was robustly predictive of successful encoding, and, moreover, each enhanced memory independently of the classic, longer-latency, conceptually related, difference-due-to memory (Dm) effect. Early latency midfrontal theta power also promoted successful encoding, with at least part of this influence being mediated by the later latency Dm effect. These findings markedly expand current knowledge by helping to elucidate the intimate relationship between attentional modulations of perceptual processing and effective encoding for later memory retrieval.