高清超直流刺激头顶皮层调节了语言工作记忆背后的神经动态
Yasra Arif1, Richard W Song1,2, Seth D Springer1,3
1Institute for Human Neuroscience, Boys Town National Research Hospital, Boys Town, Nebraska, USA.
Human brain mapping
|August 22, 2024
概括
高清度跨直流刺激 (HD-tDCS) 通过影响和α振荡,影响语言工作记忆 (vWM). 右侧刺激促进了编码,而左侧刺激影响了不同的区域,表明了复杂的神经调节效应.
科学领域:
- 认知神经科学 认知神经科学
- 神经成像是一种神经成像.
- 大脑刺激 大脑刺激
背景情况:
- 口头工作记忆 (vWM) 是一个重要的认知功能,由前侧-双侧网络支持.
- 非侵入性脑刺激技术越来越多地被用于认知增强,但对vWM的发现仍然不一致.
- 了解精确的神经机制和大脑刺激对vWM的区域影响是必不可少的.
研究的目的:
- 研究高清超直流刺激 (HD-tDCS) 对口头工作记忆期间神经活动的影响.
- 为了确定左侧与右侧顶膜刺激对vWM子过程的差异影响.
- 在vWM任务中识别特定的大脑区域和由顶部HD-tDCS调节的振荡频率.
主要方法:
- 39名健康成年人接受了左侧阳,右侧阳或假 HD-tDCS 在皮上.
- 参与者在接受高密度磁脑电图 (MEG) 时执行了一项vWM任务.
- 使用光束成形分析了传感器级神经反应,全脑ANOVA确定了对vWM阶段的刺激效应.
主要成果:
- 与左侧或虚假相比,右侧顶膜刺激在右侧下额叶皮层编码期间促进了 teta 振荡.
- 在左侧体刺激中,在左上边缘区域显示相反的模式.
- 无论刺激的侧向性如何,在部区域促进了theta振荡和部区域促进了alpha振荡.
结论:
- 周围的HD-tDCS具有复杂的神经调节作用,在vWM编码和维护过程中促进和干扰神经反应.
- 刺激的横向性会影响vWM网络内的特定区域和振荡反应.
- 需要进一步的研究来优化HD-tDCS参数,以有针对性地增强vWM功能.
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