三角波tACS通过在编码的早期阶段增强大脑活动来提高工作记忆性能
Jianxu Zhang1, Jian Ouyang2, Tiantian Liu2
1School of Mechatronical Engineering, Beijing Institute of Technology, Beijing, 100081, China.
Neuroscience bulletin
|May 23, 2025
概括
三角波跨交替电流刺激 (tACS) 通过改善大脑网络连接来增强工作记忆,而正弦波tACS则为以后的编码增强了theta功率.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
背景情况:
- 工作记忆包括编码,维护和检索.
- 跨交替电流刺激 (tACS) 可以调节工作记忆.
- 在tACS当前变化率对工作记忆的影响还不太清楚.
研究的目的:
- 研究三角波tACS和正弦波tACS对工作记忆性能和大脑活动的影响.
- 为了比较不同tACS当前变化率对认知过程的影响.
主要方法:
- 随机,单盲研究,81名参与者.
- 三组接受了三角波tACS,正弦波tACS或假刺激.
- 参与者用电脑电图 (EEG) 记录执行了背后的任务.
主要成果:
- 与基线相比,所有tACS类型都改善了工作记忆性能 (精度,响应时间).
- 三角波tACS增强了非目标信息处理效率和早期编码大脑网络连接.
- 在后来的编码过程中,正弦波tACS在中央前部区域增加了theta功率.
结论:
- 三角波tACS通过早期编码中增强的大脑网络连接来显著提高工作记忆的效率.
- 侧面波tACS可能通过调节theta功率在后期信息处理中发挥作用.
- 结果提供了对调制工作记忆的tACS机制的见解.
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