HD-tACS在左侧前部植入管上,涉及与言语运动控制相关的theta活动
Karim Johari1, Fatemeh Tabari1
1Human Neurophysiology and Neuromodulation Lab, Louisiana State University, Baton Rouge, LA, USA.
Brain research
|January 1, 2025
概括
在语音运动控制网络上的theta阶段高清跨交替电流刺激 (HD-tACS) 改善了反应时间和增强了神经活动,这表明语音产生增强的潜力.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 语音运动控制 语音运动控制
背景情况:
- 左侧前额置身管 (FAT) 的损伤损害了语音的产生.
- 脂肪对言语运动控制和认知功能至关重要.
研究的目的:
- 为了研究多位点 (4赫兹) 高清跨交替电流刺激 (HD-tACS) 对左额头置管 (FAT) 的影响.
- 调节语音运动控制的神经和行为方面,使用相位和反相位刺激协议.
主要方法:
- 21名参与者接受了三次相对平衡的阶段内,反阶段和假设的 HD-tACS 在左侧 SMA 和 IFG 上.
- 在语音Go/No-Go任务中记录了脑电图 (EEG) 数据,以评估神经相关性.
- 行为测量包括语音反应时间和抑制精度.
主要成果:
- 与模拟和反相条件相比,在相位的THETA HD-tACS显著改善了语音反应时间.
- 神经数据显示,在语音启动过程中,前额THA功率增加,中央和前额电极之间的THA相同步增强.
- 在相内刺激后,Theta活动功率和前中心连接性增加,这表明语音抑制增强.
结论:
- 应用于FAT的theta HD-tACS增强了语音运动准备和抑制认知控制的神经标志物.
- 这种多站点刺激协议显示了改进语音生产和控制的翻译潜力.
相关概念视频
Higher Mental Functions of the Brain: Language
Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
Language formation and comprehension take place in the dominant hemisphere. The dominant hemisphere is responsible for understanding the meaning of spoken, written, or sign language, as well as the ability to communicate. For most people, the left hemisphere is the dominant one. The right hemisphere, then, gives tone and emotional context to the...
Lateralization
Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.


