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语言体验塑造了节奏声音序列的预测编码.
Piermatteo Morucci1,2, Sanjeev Nara2,3, Mikel Lizarazu2
1Department of Fundamental Neurosciences, University of Geneva, Geneva, Switzerland.
母语通过创造长期预测来塑造听觉处理. 这项研究表明,语言背景如何影响大脑对声音模式的反应,影响早期的听觉感知.
科学领域:
- 神经科学是一个神经科学.
- 精神声学是一种精神声学.
- 计算语言学 计算语言学
背景情况:
- 感知系统利用先前的知识和预测来解释环境.
- 听觉感知中的短期预测得到了很好的研究,但长期的预测影响仍然不清楚.
研究的目的:
- 研究长期的语言经验如何塑造早期的听觉处理.
- 确定母语单词顺序是否影响非语言声音的听觉预测.
主要方法:
- 从西班牙语 (functor-initial) 和巴斯克语 (functor-final) 的母语使用者记录的磁脑电图 (MEG).
- 参与者听到二进制声音序列的时间交替,偶尔有遗漏.
- 分析了与语言背景和声音特性相关的不匹配负面 (MMN) 幅度.
主要成果:
- 根据语言背景,MMN的幅度有所不同,特别是在左听力皮层.
- 群体的差异是基于持续时间的声音序列,而不是基于音调的声音序列.
- 结果支持语言特异性的长期持续时间先验影响听觉处理的假设.
结论:
- 终身语言接触塑造了基本的听觉感知,特别是节奏声音的神经处理.
- 提供了在听觉皮层中长期预测编码系统的直接证据.
- 基于母语的内部模型影响大脑如何预测和处理传入的声音序列.
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