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神经振荡反映了对视听语音时间感知的个体差异
Zeliang Jiang1, Xingwei An1, Shuang Liu1
1Academy of Medical Engineering and Translational Medicine, Tianjin University, 300072 Tianjin, China.
Cerebral cortex (New York, N.Y. : 1991)
|September 20, 2023
概括
视听语音感知中的个体差异与不同的大脑活动模式有关. 在三角波段,三角波段和α波段的神经振荡与人们如何感知语音同步和时间相关.
科学领域:
- 神经科学是一个神经科学.
- 听觉感知是一种听觉感知.
- 语音处理 语音处理
背景情况:
- 多感官集成依赖于精确的时间处理刺激.
- 视听时间感知中的个体变化是显著的,但尚未完全理解,特别是在语音方面.
- 之前的研究集中在非语音刺激上,在理解语音特定的时间感知机制方面留下了一个差距.
研究的目的:
- 探究在视听语音时间感知中的个体差异背后的神经机制.
- 检查 prestimulus 神经振荡与视听语音同步和时间灵敏度之间的关系.
- 在语音感知中区分主观并发点和时间绑定窗口的神经相关性.
主要方法:
- 录制了28名参与者的脑电图 (EEG) 在视听语音/ba/同时性判断任务中.
- 使用主观同时性点 (PSS) 量化感知同步.
- 使用时间绑定窗口 (TBW) 量化时间灵敏度,包括听觉引导 (LTBW) 和视觉引导 (RTBW) 类型.
主要成果:
- 对于PSS和TBW的个体差异,发现了分离的神经机制.
- 前中心三角洲功率与听觉领先的TBW (LTBW) 有积极的相关性,这表明了上下注意力的作用.
- 帕里埃托 - 头垂体功率与视觉领先的TBWs (RTBWs) 有负相关性,表明语言特有的自下而上的视觉注意力.
- 额头和尾部区域的α功率增加与更大的PSS值有关,反映了一般的注意力状态.
结论:
- 视听语音时间感知中的个体差异是由不同的神经振荡机制支的.
- 上下注意力 (delta) 和下向上视觉注意力 (theta) 不同调节时间灵敏度 (TBW).
- 一般的注意状态 (alpha) 影响感知同步点 (PSS).
- 提高注意力可以改善视听语言的时间感知和整合.
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