耳膜外皮松动神经刺激通过调节工作记忆表征来稳定事件细分
Xianzhen Zhou1, Foroogh Ghorbani1, Veit Roessner1,2
1Cognitive Neurophysiology, Department of Child and Adolescent Psychiatry, Faculty of Medicine, TU Dresden, Schubertstrasse 42, 01307, Dresden, Germany.
The international journal of neuropsychopharmacology
|January 23, 2026
概括
耳道穿皮漫神经刺激 (atVNS) 通过减少大脑的事件细分来稳定事件细分.
科学领域:
- 认知神经科学 认知神经科学
- 神经刺激是一种神经刺激.
- 人类神经生理学 人类神经生理学
背景情况:
- 事件细分,即将连续经验分为离散单元的过程,对于情境意识和适应性行为至关重要.
- 事件细分理论 (EST) 认为,上腺素 (NE) 和GABAergic系统在控制事件细分方面发挥作用.
- 耳部穿皮漫神经刺激 (atVNS) 是一种非侵入性的方法来调节神经系统.
研究的目的:
- 调查atVNS是否影响事件细分.
- 探索北上腺素和/或GABAergic系统在事件细分中的潜在调节作用.
- 通过使用EEG来检查VNS对事件细分的影响背后的神经机制.
主要方法:
- 这是一项双盲,对抗平衡的实验,对40名健康成年人进行.
- 参与者看了一部电影,并在活动性VNS和假刺激期间指示事件边界.
- EEG记录了神经活动;多变量模式分析 (MVPA) 评估了神经模式的特异性;来源重建确定了皮质激活.
主要成果:
- 与假刺激相比,活跃的atVNS显著降低了事件细分的可能性.
- MVPA对边界和非边界区间的解码精度较低,表明神经表征不那么明显.
- 脑电图源的重建显示,前额叶皮层的激活减少,与工作记忆相关.
结论:
- atVNS稳定事件表示并限制工作模型的更新,这表明GABAergic对事件细分的调制.
- 这些发现与先前的研究结合起来,将atVNS与工作记忆门连接起来.
- atVNS对事件细分的生态相关认知过程产生影响.
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