在秘密演讲制作过程中,听觉运动功能连接的时间解析半球侧面化
Francesco Mantegna1, Joan Orpella2, David Poeppel3
1Department of Psychology, New York University, New York, NY 10003, USA; Department of Engineering Science, Oxford University, Oxford, Oxfordshire, UK.
Cell reports
|February 11, 2025
概括
这项研究揭示了在隐蔽演讲期间大脑半球活动的交替. 左向大脑侧面化之前隐藏的言语,转向右后,表明共享的感觉运动通路的内部和外部的言语.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 语音制作 语音制作
背景情况:
- 隐蔽演讲 (内部演讲) 涉及到发音运动和感官反,可能与公开演讲不同.
- 露面语音模型表明分离的前 (左半球) 和反 (右半球) 信号.
- 隐藏的语音感官运动通信背后的神经机制仍然不清楚.
研究的目的:
- 调查在隐蔽语音制作过程中功能连接的横向化.
- 为了确定隐藏言语是否使用与公开言语相同的神经通道.
- 为隐蔽语音运动控制模型提供电生理学证据.
主要方法:
- 磁脑电图 (MEG) 用于记录大脑活动.
- 功能连接在预测的隐蔽言论发作之前和之后被分析.
- 分析的重点是阿尔法频段和前运动和听觉区域之间的连接.
主要成果:
- 在功能连接中观察到交替横向化的模式.
- 左向横向化先于预测的隐蔽言论的出现.
- 右向横向化随着预测的隐蔽言论的出现而发生.
- 这种模式是特定于阿尔法频段的前运动-听觉连接.
结论:
- 隐藏的语音传感运动通信似乎涉及到交替的半球横向化.
- 这些发现支持了隐蔽和公开语音共享神经通信通道的假设.
- 结果为理解语音运动控制模型提供了新的视角.
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