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在疼痛下认知表现的个体差异与特定区域的α功率调制有关

Francesca Storey^1,2,3, Mariya Prokhorenko^4,5,6, Michael L Keaser^4,5

¹School of Psychology, University of Birmingham, United Kingdom.

Neurobiology of pain (Cambridge, Mass.)

|October 27, 2025

概括

在疼痛处理过程中具有更好的认知功能的人可能会使用一种行为策略来抑制与疼痛相关的大脑活动. 这项研究探讨了在实验诱导的神经病状疼痛时的注意力成本和大脑振荡.

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
疼痛研究疼痛研究

背景情况:

慢性疼痛与认知缺陷有关,可能是由于认知资源的转移.
在疼痛期间对认知障碍的不一致的发现表明注意力成本的个体差异.
了解这些差异对于管理与疼痛相关的认知功能障碍至关重要.

研究的目的:

在经历实验诱导疼痛的个体中,研究认知任务期间大脑活动的自上向下调制.
为了比较在疼痛期间具有不同性能水平的参与者之间的认知表现和脑电图 (EEG) 模式.
探索注意力成本,疼痛和认知功能之间的关系.

主要方法:

使用脑电图 (EEG) 检查振荡活动.
使用视觉线索和听觉/视觉目标的跨模式注意力任务.
使用素热疼痛模型诱导长期的神经病状疼痛.
通过以不同方式呈现有或没有分心器的目标来评估注意力成本.

主要成果:

在疼痛期间受视觉分心影响较小的参与者表现出额头/中心α功率 (8-12 Hz) 的增加.
在疼痛期间这种α功率的增加可能表明疼痛处理区域 (例如体感皮质) 的抑制.
这种抑制可以释放认知资源,支持更好的任务执行.

结论:

疼痛期间更好的认知功能与特定的行为策略有关.
疼痛期间阿尔法功率的增加可能反映了资源分配的适应性神经机制.
研究结果表明,调节注意力和大脑活动可以减轻疼痛的认知影响.

关键词:

阿尔法振荡是指阿尔法振荡.跨模式的注意力.个体变化的个体变化.疼痛疼痛疼痛疼痛

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