通过不同的练习时间表提高知觉、注意力和工作记忆要求:高密度脑电图多尺度分析的启示。

IF 2.9 2区 医学 Q2 NEUROSCIENCES
Alexandre Cretton, Kate Schipper, Mahmoud Hassan, Paolo Ruggeri, Jérôme Barral
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引用次数: 0

摘要

情境干扰(Contextual interference,CI)可通过以随机顺序而非阻塞顺序练习运动任务来提高学习效果。一种假说认为,这种益处来自于早期知觉/注意过程的增强,而另一种假说则认为,更好的学习是由于记忆过程的高度激活。我们使用高密度脑电图进行多尺度分析,包括地形分析、源估计和功能连接,以研究短时间窗口内注意力和记忆过程相互交织的动态变化。我们采用交叉设计,在随机和阻断条件下记录了 35 名参与者在三个不同距离执行瞄准任务时的头皮活动。我们的结果表明,在随机条件下,与感知/注意力(N1、P3a)和工作记忆(P3b)相关过程有关的拓扑结构更为明显。源估计分析支持了这些发现,揭示了在随机练习过程中,知觉腹侧通路、前扣带回和顶叶皮层的参与程度更高,同时腹侧阿尔法和前顶叶θ波段网络的功能连接也有所增加。我们的研究结果表明,与阻断条件相比,在随机条件下,知觉、注意和工作记忆过程等特定过程以及维持更普遍的注意和执行过程的大规模功能网络都得到了增强。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Enhancing perceptual, attentional, and working memory demands through variable practice schedules: insights from high-density EEG multi-scale analyses.

Contextual interference (CI) enhances learning by practicing motor tasks in a random order rather than a blocked order. One hypothesis suggests that the benefits arise from enhanced early perceptual/attentional processes, while another posits that better learning is due to highly activated mnemonic processes. We used high-density electroencephalography in a multi-scale analysis approach, including topographic analyses, source estimations, and functional connectivity, to examine the intertwined dynamics of attentional and mnemonic processes within short time windows. We recorded scalp activity from 35 participants as they performed an aiming task at three different distances, under both random and blocked conditions using a crossover design. Our results showed that topographies associated with processes related to perception/attention (N1, P3a) and working memory (P3b) were more pronounced in the random condition. Source estimation analyses supported these findings, revealing greater involvement of the perceptual ventral pathway, anterior cingulate and parietal cortices, along with increased functional connectivity in ventral alpha and frontoparietal theta band networks during random practice. Our results suggest that CI is driven, in the random compared to the blocked condition, by enhanced specific processes such as perceptual, attentional, and working memory processes, as well as large-scale functional networks sustaining more general attentional and executive processes.

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来源期刊
Cerebral cortex
Cerebral cortex 医学-神经科学
CiteScore
6.30
自引率
8.10%
发文量
510
审稿时长
2 months
期刊介绍: Cerebral Cortex publishes papers on the development, organization, plasticity, and function of the cerebral cortex, including the hippocampus. Studies with clear relevance to the cerebral cortex, such as the thalamocortical relationship or cortico-subcortical interactions, are also included. The journal is multidisciplinary and covers the large variety of modern neurobiological and neuropsychological techniques, including anatomy, biochemistry, molecular neurobiology, electrophysiology, behavior, artificial intelligence, and theoretical modeling. In addition to research articles, special features such as brief reviews, book reviews, and commentaries are included.
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