在想象的语音镜中,Mu节奏运动听觉延迟明显的语音时间表
Francesco Mantegna1,2, David Poeppel3, Joan Orpella3,4
1Department of Psychology, New York University, New York, NY, 10003, USA. fm1672@nyu.edu.
Scientific reports
|January 28, 2026
概括
想象中的语音感官运动协调保持了公开的语音时间. 运动区域的大脑活动在听觉区域之前约为120毫秒,显示内部神经过程与语音发音约束保持一致.
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:
- 开放式的言论涉及到具有确定的时间的感觉运动协调.
- 以前对想象式言语的研究依赖于间接证据来证明时间等价性.
研究的目的:
- 为了调查在想象的演讲中感觉运动协调是否保留了公开的演讲时间.
- 为了确定想象中的言语是否受到与语音发音相同的生物物理因素的约束.
主要方法:
- 参与者想象制作音节 (/pa/, /ta/, /ka/) 呈现在视觉上.
- 磁脑电图 (MEG) 测量了mu节律 (8-30 Hz) 的功率抑制.
- 基于集群的顺序分析和延迟分析检查了时空动态.
主要成果:
- 阿尔法 (8-12 Hz) 和贝塔 (15-30 Hz) 频率分别分离到听觉和运动区域.
- 运动区域的β抑制在听觉区域的α抑制之前大约120 ms.
- 这种时间延迟反映了在公开演讲中观察到的情况.
结论:
- 想象语音的感官运动协调直接证明了与公开语音的时间等价性.
- 阿尔法-贝塔功率抑制作为神经标记器,用于在想象语音中独特的运动和听觉过程.
- 这些发现提供了内部神经过程的直接证据,这些过程将想象中的言语与声音发音的约束联系起来.
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