Prediction of behavioral performance by alpha-band phase synchronization in working memory

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS ACS Applied Bio Materials Pub Date : 2024-07-05 DOI:10.1016/j.physbeh.2024.114630

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Abstract

Working memory (WM) is a cognitive system with limited capacity that can temporarily store and process information. The purpose of this study was to investigate functional connectivity based on phase synchronization during WM and its relationship with the behavioral response. In this regard, we recorded EEG/Eye tracking data of seventeen healthy subjects while performing a memory-guided saccade (MGS) task with two different positions (near eccentricity and far eccentricity). We computed saccade error as memory performance and measured functional connectivity using Phase Locking Value (PLV) in the alpha frequency band (8–12 Hz). The results showed that PLV is negatively correlated with saccade error. Our finding indicated that during the maintenance period, PLV between the frontal and visual area in trials with low saccade error increased significantly compared to trials with high saccade error. Furthermore, we observed a significant difference between PLV for near and far conditions in the delay period. The results suggest that PLV in memory maintenance, in addition to predicting saccade error as behavioral performance, can be related to the coding of spatial information in WM.

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工作记忆中阿尔法波段相位同步对行为表现的预测。

工作记忆（WM）是一种容量有限的认知系统，可以暂时存储和处理信息。本研究旨在研究工作记忆过程中基于相位同步的功能连接及其与行为反应的关系。为此，我们记录了 17 名健康受试者在两种不同位置（近偏心和远偏心）执行记忆引导囊瞄（MGS）任务时的脑电图/眼球跟踪数据。我们计算了作为记忆表现的囊回误差，并使用α频段（8-12 Hz）的锁相值（PLV）测量了功能连通性。结果显示，锁相值与囊回错误呈负相关。我们的研究结果表明，在维持期，与高盲动误差试验相比，低盲动误差试验中额叶和视觉区之间的锁相值显著增加。此外，我们还观察到在延迟期，近距离和远距离条件下的 PLV 存在显著差异。结果表明，记忆维持中的PLV除了能预测作为行为表现的囊跳误差外，还可能与WM中的空间信息编码有关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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