P300 波被分解成反映反应选择和刺激-反应联系自动重新激活的两个部分。

IF 2.9 2区 心理学 Q2 NEUROSCIENCES
Psychophysiology Pub Date : 2024-08-01 Epub Date: 2024-03-31 DOI:10.1111/psyp.14578
Juri D Kropotov, Valery A Ponomarev, Marina V Pronina
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引用次数: 0

摘要

顶叶 P300 波事件相关电位(ERPs)与许多实验室任务中的各种心理操作有关。本研究旨在将 ERP 的 P3 波分解为若干子成分,并将它们与行为参数(如刺激-反应(S-R)联系的强度和 GO/NOGO 反应)联系起来。研究人员记录了 172 名健康成年人(107 名女性)的脑电图(31 个通道),这些人都参与了两项诱导 GO/NOGO 任务,其中 S-R 链接的强度通过指令进行了调整。在主动条件下对提示、GO/NOGO 刺激做出反应时,以及在不需要手动反应的被动条件下,观察到了 P300 波。结合使用电流源密度转换和盲源分离方法,我们将 P300 波分解为两个不同的成分,据称这两个成分来自顶叶的不同部位。顶叶中线成分(电流源在 Pz 附近)的振幅密切反映了主动、被动和消极条件下 S-R 联系的强度。顶叶外侧分量(电流源在 P3 和 P4 附近)的振幅与基底神经节输出核在行动选择-抑制操作中的推拉活动相似。这些发现为行动选择过程和重新激活 S-R 链接的神经机制提供了启示。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The P300 wave is decomposed into components reflecting response selection and automatic reactivation of stimulus-response links.

The parietal P300 wave of event-related potentials (ERPs) has been associated with various psychological operations in numerous laboratory tasks. This study aims to decompose the P3 wave of ERPs into subcomponents and link them with behavioral parameters, such as the strength of stimulus-response (S-R) links and GO/NOGO responses. EEGs (31 channels), referenced to linked ears, were recorded from 172 healthy adults (107 women) who participated in two cued GO/NOGO tasks, where the strength of S-R links was manipulated through instructions. P300 waves were observed in active conditions in response to cues, GO/NOGO stimuli, and in passive conditions when no manual response was required. Utilizing a combination of current source density transformation and blind source separation methods, we decomposed the P300 wave into two distinct components, purportedly originating from different parts of the parietal lobules. The amplitude of the parietal midline component (with current sources around Pz) closely mirrored the strength of the S-R link across proactive, reactive, and passive conditions. The amplitude of the lateral parietal component (with current sources around P3 and P4) resembled the push-pull activity of the output nuclei of the basal ganglia in action selection-inhibition operations. These findings provide insights into the neural mechanisms underlying action selection processes and the reactivation of S-R links.

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来源期刊
Psychophysiology
Psychophysiology 医学-神经科学
CiteScore
6.80
自引率
8.10%
发文量
225
审稿时长
2 months
期刊介绍: Founded in 1964, Psychophysiology is the most established journal in the world specifically dedicated to the dissemination of psychophysiological science. The journal continues to play a key role in advancing human neuroscience in its many forms and methodologies (including central and peripheral measures), covering research on the interrelationships between the physiological and psychological aspects of brain and behavior. Typically, studies published in Psychophysiology include psychological independent variables and noninvasive physiological dependent variables (hemodynamic, optical, and electromagnetic brain imaging and/or peripheral measures such as respiratory sinus arrhythmia, electromyography, pupillography, and many others). The majority of studies published in the journal involve human participants, but work using animal models of such phenomena is occasionally published. Psychophysiology welcomes submissions on new theoretical, empirical, and methodological advances in: cognitive, affective, clinical and social neuroscience, psychopathology and psychiatry, health science and behavioral medicine, and biomedical engineering. The journal publishes theoretical papers, evaluative reviews of literature, empirical papers, and methodological papers, with submissions welcome from scientists in any fields mentioned above.
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