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高分辨率的fMRI揭示了一条背部大脑通路,可以选择的同类发音

Mathilda Froesel^1,2, Koh Ikuchi³, Qi Zhu⁴

¹Department of Neurosciences, Lab for Neuro- and Psychophysiology, KU Leuven, Leuven, Belgium.

Imaging neuroscience (Cambridge, Mass.)

|August 18, 2025

概括

这项研究揭示了灵长类人与语音相关的背部网络,包括区域Tpt和6DR/F2,处理语音. 这突显了听觉运动路径和灵长类动物的沟通,包括人类的言语之间的进化联系.

科学领域:

系统神经科学系统神经科学
灵长类的认知能力
听觉神经科学听觉神经科学

背景情况:

了解灵长类动物的社会沟通和声音感知是至关重要的.
皮质"语音补丁"处理同类的发音,但背流在非人类灵长类动物中的作用尚不清楚.
背流与听觉运动功能和人类语言有关.

研究的目的:

在 rhesus 子中研究处理发声的大脑区域.
澄清背脊流对处理特定物种灵长类动物发声的贡献.
识别参与语音感知的神经网络.

主要方法:

高分辨率的功能性磁共振成像 (fMRI) 使用0.6毫米的同otropic voxels.
研究醒着的 rhesus 子暴露在各种发声 (coos,尖叫,攻击性呼叫) 和控制声音中.
分析了在听觉和相关皮质区域的选择性激活和人口反应歧视.

主要成果:

一个广泛的网络,包括听觉皮层,前运动和体感官区域,处理语音.
在尾部侧 (Tpt区域) 和背部前运动皮质 (区域6DR/F2) 中观察到选择性激活.
人口对Tpt和6DR/F2的反应可以区分不同的发音.

结论:

突出了 (Tpt,6DR/F2) 的与声音相关的背部网络,用于处理突出的声音刺激.
表明处理声调的声学特征和运动表现之间的联系.
提供了对支持灵长类动物和人类听觉通信的听觉运动通路的进化前体的见解.

关键词:

背部前运动皮层的前运动皮层.功能磁力共振成像 (fMRI) 是一种子,子,子,子,子,子,子,子,子,子,子,子,子,子,子,子.顶部时间皮层皮层.语音的发音和表达方式.

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