大脑刺激可以防止神经下调,并优化学习
F Contò1, G Ellena2, G Edwards3
1Center for Neuroscience and Cognitive Systems@UniTn, Istituto Italiano di Tecnologia, Corso Bettini 31, 38068 Rovereto TN, Italy; Department of Human and Social Sciences, University of Bergamo, Piazzale S. Agostino, 2, 24129, Bergamo BG, Italy.
NeuroImage
|February 22, 2026
概括
在注意力训练过程中,跨骨随机噪声刺激 (tRNS) 通过内突维持神经活动. 这种非侵入性大脑刺激通过防止神经适应来增强学习和认知表现.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 神经成像是一种神经成像.
背景情况:
- 非侵入性脑刺激,如tRNS,可以增强皮质刺激性和学习能力.
- 对于tRNS诱导的学习促进神经机制还没有完全理解.
- 注意力训练会导致神经活动下降,阻碍学习.
研究的目的:
- 研究在注意力训练期间,tRNS如何通过内 (IPS) 调节神经可塑性.
- 确定tRNS是否可以防止神经活动下降并增强学习.
- 使用fMRI检查tRNS对注意网络的影响.
主要方法:
- 多会话tRNS-fMRI范式与37名参与者 (18-35岁).
- 在视觉空间认知任务期间,对双边IPS和假刺激的活跃tRNS进行比较.
- 在注意网络中分析任务唤起的BOLD活动,以及与行为表现的相关性.
主要成果:
- 假刺激显示,任务唤起的BOLD活动下降,没有行为改善.
- 活跃的tRNS阻止了BOLD活动的下降,维持神经反应,特别是在IPS和前视野 (FEF).
- 在tRNS条件下持续的BOLD活动与改善的任务性能相关.
结论:
- 顶层皮层上的tRNS在短时间的认知训练协议期间缓解了早期的神经下调.
- 通过tRNS维持神经刺激性可以保持功能反应动态,并优化注意力学习.
- tRNS是增强认知表现和调节神经可塑性在各种人群中的有希望的工具.
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