胰岛-中位前额叶皮层功能连接调节通过皮肤外耳虚神经刺激:一个fMRI研究
IEEE journal of biomedical and health informatics
|July 4, 2024
概括
通过皮肤进行耳道迷走神经刺激 (taVNS),可以通过改变大脑连接来改善心理健康. 这种神经调节技术削弱了岛膜和中间前额叶皮层之间的负面连接,影响了感知信号.
科学领域:
- 神经科学是一个神经科学.
- 神经调节是一种神经调节.
- 精神病学是一个精神病学.
背景情况:
- 通过皮肤进行耳道迷走神经刺激 (taVNS) 是一种有前途的神经调节技术,对各种疾病具有潜在的治疗益处.
- 塔VNS疗效的确切机制尚不清楚,特别是它对整感应信号处理的影响,这与抑郁症,焦虑症和失眠等疾病有关.
研究的目的:
- 研究taVNS的神经生物学机制,通过检查其对胰岛和中部前额皮层 (MPFC) 之间的功能连接 (FC) 的影响.
- 探索taVNS诱导的大脑活动与感官信号处理之间的关系.
主要方法:
- 基于兴趣和基于种子的功能连接 (FC) 分析的受雇区域.
- 在接受活性taVNS与假手术的参与者中比较大脑活动的变化.
主要成果:
- 在taVNS后观察到,insula和MPFC之间的负功能连接性显著减弱.
- 在假装组中没有发现这种连接的显著变化.
- 这些发现表明taVNS调节了参与整体感应的关键大脑区域之间的内在FC.
结论:
- 通过调节 insula-MPFC 连接,taVNS 可能会增强 interoceptive 意识和认知过程之间的灵活平衡.
- 这种对身体与大脑相互作用的调制,为对神经和精神疾病taVNS的治疗机制提供了洞察力.
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