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使用实时阶段调节的横交替电流刺激来增强工作记忆

David Haslacher¹, Alessia Cavallo², Philipp Reber³

¹Clinical Neurotechnology Laboratory, Department of Psychiatry and Neurosciences, Charité Campus Mitte, Charité - Universitätsmedizin Berlin, Berlin, Germany.

Brain stimulation

|July 19, 2024

概括

这项研究开发了实时阶段调节的横交替电流刺激 (tACS),以增强工作记忆. 该系统成功调节了大脑活动并提高了任务性能,显示了未来治疗应用的潜力.

科学领域:

神经科学是一个神经科学.
认知科学认知科学
生物医学工程生物医学工程

背景情况:

跨交替电流刺激 (tACS) 可以通过准阿尔法振荡来调节工作记忆 (WM).
以前的方法由于刺激工件而缺乏实时相位跟踪.
实时适应tACS相位延迟到内源性振荡对于有效调制至关重要.

研究的目的:

开发一个闭环系统,用于实时阶段调节的tACS,以准腰头阿尔法振荡.
调查假设实时阶段调节的tACS可以提高工作记忆的性能.
为了确定增强工作记忆的最佳相位延迟.

主要方法:

开发了实时阶段调节的闭环振幅调制tACS (CLAM-tACS).
应用了CLAM-tACS在六个阶段的滞后,参与者执行工作记忆任务 (N=21).
使用对照组 (N=25) 接受正面刺激以排除感官混.

主要成果:

工作记忆的准确性得到了显著的改善,与平面头CLAM-tACS以相位延迟依赖的方式 (p=0.0350).
观察到最强的增强是在330°阶段滞后 (p=0.00273,d=0.976) 的时候.
面对面对面阿尔法振荡的调制与WM精度变化相关;对照组没有观察到任何影响.

结论:

证明了实时阶段调整的CLAM-tACS的可行性和有效性.
证实CLAM-tACS可以调节大脑活动和行为.
开辟了研究大脑行为关系和治疗应用的途径.

关键词:

封闭循环的封闭循环.电脑电图 (电脑电图) 是一种脑电图.阶段依赖的阶段依赖.跨骨交替电流刺激工作记忆工作记忆

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