Exploring the effect of negative mood on working memory subprocesses: An event-related potential study

IF 2.9 3区医学 Q1 BEHAVIORAL SCIENCES

Biological Psychology Pub Date : 2025-09-04 DOI:10.1016/j.biopsycho.2025.109117

Qiaoling Hua , Ziyuan Li , Qiang Liu

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引用次数: 0

Abstract

Working memory (WM) regulates information flow through gate mechanisms, consisting of four subprocesses: gate opening, gate closing, updating, and substitution. However, their neural mechanisms remain underexplored. While emotion-cognition interactions are well studied, the effects of negative mood on these subprocesses are unclear. This study examines the neural mechanisms underlying four WM subprocesses using event-related potentials (ERPs) and explores the influence of negative mood. Thirty-seven participants completed a cue-version reference-back task after mood induction (negative or neutral) across two sessions, with behavioral and EEG data recorded. Mood changes were assessed via the Positive and Negative Affect Schedule (PANAS) before and after the experiment. A total of 32 participants were included in the final analysis. The behavioral results showed that all WM subprocess (gate opening, gate closing, updating, and substitution) costs were observed in reaction time (RT), but only substitution costs were evident in error rate (ER). Negative mood only reduced substitution costs in RT. The ERP results revealed that gate opening was activated during both the cue phase (550–1000 ms at frontal and central areas) and the probe phase (670–920 ms at central and parietal areas), whereas no gate closing costs were observed in neural activity. Updating was activated at central, parietal, and occipital areas (630–1000 ms post-probe), and substitution was linked to parietal area (710–980 ms post-probe). Negative mood specifically reduced gate opening costs during the probe phase. This study confirms the existence of four WM subprocesses, and suggests that negative mood influences gate opening and substitution subprocesses.

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负性情绪对工作记忆子过程的影响：事件相关电位研究。

工作记忆（WM）通过门机制调节信息流，门机制包括四个子过程：门打开、门关闭、门更新和替代。然而，它们的神经机制仍未被充分探索。虽然情绪与认知的相互作用已经得到了很好的研究，但消极情绪对这些子过程的影响尚不清楚。本研究利用事件相关电位（ERPs）分析其神经机制，并探讨负面情绪的影响。37名参与者在情绪诱导（消极或中性）后完成了一个线索版本的参考反馈任务，并记录了行为和脑电图数据。在实验前后通过积极和消极情绪量表（PANAS）评估情绪变化。共有32名参与者被纳入最终分析。行为学结果表明，所有WM子过程（门打开、门关闭、门更新和替代）的成本都体现在反应时间（RT）上，而只有替代成本体现在错误率（ER）上。消极情绪只会降低替代成本。ERP结果显示，在提示阶段（额叶和中央区域550-1000毫秒）和探测阶段（中央和顶叶区域670-920毫秒），门打开都被激活，而在神经活动中没有观察到门关闭成本。更新激活于中央、顶叶和枕叶区域（探测后630-1000 ms），替代激活于顶叶区域（探测后710-980 ms）。消极情绪特别降低了探测阶段的门开启成本。本研究证实了四个WM子过程的存在，并提示负性情绪影响门开启子过程和替代子过程。

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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来源期刊

Biological Psychology 医学-行为科学

CiteScore

4.20

自引率

11.50%

发文量

146

审稿时长

3 months

期刊介绍： Biological Psychology publishes original scientific papers on the biological aspects of psychological states and processes. Biological aspects include electrophysiology and biochemical assessments during psychological experiments as well as biologically induced changes in psychological function. Psychological investigations based on biological theories are also of interest. All aspects of psychological functioning, including psychopathology, are germane. The Journal concentrates on work with human subjects, but may consider work with animal subjects if conceptually related to issues in human biological psychology.