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Updated: May 23, 2025

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Stimulating the Lip Motor Cortex with Transcranial Magnetic Stimulation
Published on: June 14, 2014
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在大脑和喉发言的时机和运动控制中的反延迟问题
John P Veillette1, Jacob Rosen2, Daniel Margoliash2,3
1Departments of Psychology, University of Chicago Chicago, Illinois 60637 johnv@uchicago.edu.
概括
大脑通过从电脑电图 (EEG) 信号解码球事件来预测发声时间. 这种预测能力对于运动学习至关重要,并与改变的感官反进行重新校准,如在语音生产中所见.
科学领域:
- 神经科学是一个神经科学.
- 语音科学 语言科学
- 发动机控制器的控制器
背景情况:
- 学习复杂的运动技能需要将行为与其感官后果联系起来.
- 大脑必须预测外围事件时间,这可以通过非线性动力学与电机输出脱.
- 人类的语音产生涉及特定的喉事件 (声声),由特定的生理值触发.
研究的目的:
- 为了研究大脑如何预测语音生成过程中离散的外围事件的时间.
- 为了确定电脑电图 (EEG) 是否反映并能够解码球事件时间.
- 检查预测和解码如何适应改变的感官反.
主要方法:
- 在演讲过程中使用电造影 (EGG) 测量了人类球波形发作.
- 分析了脑电图 (EEG) 对神经信号的分析,这些信号先于和相关于球事件.
- 在长时间暴露于延迟的听觉反后,评估了球事件的EEG解码的变化.
主要成果:
- 发生状事件的发作反映在事件发生前的EEG信号中.
- 能从EEG数据中解码球事件时间.
- 暴露于延迟的听觉反导致听觉-运动不匹配检测的重新校准,并将解码的事件时间与实际运动脱.
结论:
- 大脑利用外围时间的塑性预测来在运动学习中进行信用分配.
- 脑电图解码性能反映了这些预测机制.
- 研究结果表明,在声学学习物种中,运动控制的原则是可以通用的.
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