病理性关节活动驱动人类慢性疼痛中的异常认知网络处理.
Brent W Stewart1, Michael L Keaser1, Hwiyoung Lee2
1Department of Neural and Pain Sciences, University of Maryland School of Dentistry, W Baltimore Street, Baltimore, MD 21201, USA.
Current biology : CB
|April 13, 2024
概括
慢性疼痛会破坏认知网络. 这项研究揭示了偏头痛患者的病态关节活动,表明慢性疼痛中认知缺陷的脑电路机制.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 疼痛研究 疼痛研究
背景情况:
- 慢性疼痛与认知网络功能障碍有关.
- 导致这些认知缺陷的确切机制尚不清楚.
- 关闭层在疼痛期间的认知调节中的作用尚未得到充分研究.
研究的目的:
- 调查关闭层在与慢性疼痛相关的认知网络改变中的作用.
- 为了确定特定的大脑区域和电路涉及与疼痛相关的认知障碍.
- 探索偏头痛患者认知缺陷的神经基础.
主要方法:
- 功能磁共振成像 (fMRI) 用于观察疼痛和认知任务期间的大脑活动.
- 动态因果建模 (DCM) 来推断大脑区域之间的定向连接.
- 扩散权重成像 (DWI) 来评估结构连接性.
主要成果:
- 在健康个体中,关节被急性疼痛和预测线索激活.
- 偏头痛患者在疼痛和认知任务期间表现出病态的关闭体和右背侧额前皮层 (piDLPFC) 活动.
- DCM分析表明,从关闭层到piDLPFC的方向影响,受到结构连接的支持.
结论:
- 闭关体在急性疼痛期间起到调节认知网络的作用.
- 变化的关节-piDLPFC电路活动可能是慢性疼痛,特别是偏头痛的认知障碍的基础.
- 这些发现为慢性疼痛疾病中的认知功能障碍提供了潜在的电路级机制.
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