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前额α不对称与反应抑制控制的行为和大脑活动指数之间的关系

Atakan M Akil^1,2,3, Renáta Cserjési², Tamás Nagy²

¹Doctoral School of Psychology, ELTE Eötvös Loránd University, Budapest, Hungary.

Journal of neurophysiology

|June 12, 2024

概括

额头α不对称 (FAA) 与tDCS没有变化,但基线FAA与抑制控制时间相关. 较大的右额头活动与早期的抑制活动减少和晚期的抑制活动增加相关,特别是在食物奖励环境中.

科学领域:

神经科学是一个神经科学.
认知心理学认知心理学
电子生理学电子生理学

背景情况:

反应性抑制控制对于各种疾病至关重要.
前额α不对称 (FAA) 是抑制控制的潜在电生理学标志物.
静止状态FAA和反应性抑制控制之间的关系尚未完全理解.

研究的目的:

评估静止状态FAA与反应性抑制控制之间的关系.
研究跨直流刺激 (tDCS) 对FAA和抑制控制的影响.
探索食物奖励背景如何影响这些关系.

主要方法:

一个随机模拟控制的设计,65名健康参与者.
脑电图数据和停止信号任务 (SST) 的性能在右额头部的20分钟阳极tDCS之前和之后收集.
进行了相关性和事件相关潜力 (ERP) 分析.

主要成果:

tDCS没有显著影响FAA或抑制性控制指数.
基线FAA与食物奖励条件中的抑制性大脑活动时间相关.
较高的相对右前额活动与早期发作的抑制控制减少和晚期发作的抑制控制增强相关.
ERP分析显示,早期发作的抑制活性减少,晚期发作的抑制活性增加,特别是在食物奖励条件下.

结论:

基线前脑活动横向化和反应性抑制过程的时间之间存在分离.
前额α不对称可能反映了抑制性控制时间的不同方面,特别是在奖励敏感的环境中.
这些发现凸显了抑制控制机制及其神经支的复杂性.

关键词:

与事件相关的潜力.额头的阿尔法不对称反应性抑制控制的反应性抑制控制停止信号任务任务停止信号任务通过骨进行直流刺激.

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