平行还是连续? 在语言生产过程中,从MEG信号中解码概念和声学/语音信息
Francesca Carota1,2, Jan-Mathijs Schoffelen1,2, Robert Oostenveld2,3
1Max Planck Institute for Psycholinguistics, Nijmegen, The Netherlands.
Cognitive neuropsychology
|December 18, 2023
概括
语音规划的神经活动显示了多个变量的早期并行激活,挑战了级联模型. 这表明,在准备发言词语的过程中,复杂的,互动的处理.
科学领域:
- 神经科学是一个神经科学.
- 心理语言学 心理语言学
- 认知科学 认知科学
背景情况:
- 语音生产涉及到复杂的,时间规划从意义到表达.
- 以前的研究提出了相互矛盾的证据,关于神经事件是否发生顺序或并行.
研究的目的:
- 调查语音规划期间神经激活的时间动态.
- 区分语音准备的顺序级联和早期并行处理模型.
主要方法:
- 使用磁脑电图 (MEG) 来记录34名参与者的神经磁性活动.
- 参与者公开命名了来自四个对象类别的图像,文字长度和语音密度被操纵.
- 应用多变量模式分析 (MVPA) 在源空间中的搜索灯来解码神经模式.
主要成果:
- 对象类别被解码在皮及中皮层.
- 声学和声学变量在左下额叶皮层 (BA 44) 和运动皮层的早期被解码.
- 研究结果表明,多个语言变量在早期并行激活.
结论:
- 结果支持早期的并行处理模型用于语音准备.
- 语言信息的互动性和相关性质可能推动了这种早期激活.
- 提出了关于语音规划过程中词汇表示是如何结构化的问题.
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