Young children's neural processing of their mother's voice: An fMRI study.
Young children's neural processing of their mother's voice: An fMRI study.
复制标题
幼儿对母亲声音的神经处理：一项功能磁共振成像研究。
DOI：
10.1016/j.neuropsychologia.2018.12.003
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发表时间：
2019
期刊：
影响因子：
2.6
通讯作者：
Scherf,KSuzanne
中科院分区：
文献类型：
--
作者：
Liu,Pan;Cole,PamelaM;Gilmore,RickO;Pérez-Edgar,KoralyE;Vigeant,MichelleC;Moriarty,Peter;Scherf,KSuzanne
除了语义内容之外，人类语音还携带副语言信息，可传达重要的社会线索，例如说话者的身份。对于年幼的孩子来说，他们自己母亲的声音是他们日常生活环境中最显着的声音输入之一。事实上，母亲声音的品质被证明有助于儿童的社会性发展。然而，我们对母亲声音在神经层面如何处理的了解还很有限。这项研究调查了母亲的声音对幼儿人声激活区域网络的调节作用是否与陌生母亲的声音不同。我们收集了 32 名正在正常发育的 7 岁和 8 岁儿童的功能磁共振成像数据，他们听的是自己的母亲和另一个孩子的母亲发出的自然语言。我们使用情绪变化的自然言语刺激来近似儿童日常体验的范围。我们在儿童语音敏感神经网络中单独定义了功能 ROI，然后独立研究了这些区域的激活受说话者身份调节的程度。与陌生母亲的声音相比，双侧后听觉皮层、颞上回（STG）和额下回（IFG）对自己母亲的声音的反应表现出增强的激活。研究结果表明，儿童以独特的方式处理自己母亲的声音，并为未来研究社会信息处理如何促进儿童社会发展轨迹铺平了道路。
In addition to semantic content, human speech carries paralinguistic information that conveys important social cues such as a speaker's identity. For young children, their own mothers’ voice is one of the most salient vocal inputs in their daily environment. Indeed, qualities of mothers’ voices are shown to contribute to children's social development. Our knowledge of how the mother's voice is processed at the neural level, however, is limited. This study investigated whether the voice of a mother modulates activation in the network of regions activated by the human voice in young children differently than the voice of an unfamiliar mother. We collected fMRI data from 32 typically developing 7- and 8-year-olds as they listened to natural speech produced by their mother and another child's mother. We used emotionally-varied natural speech stimuli to approximate the range of children's day-to-day experience. We individually-defined functional ROIs in children's voice-sensitive neural network and then independently investigated the extent to which activation in these regions is modulated by speaker identity. The bilateral posterior auditory cortex, superior temporal gyrus (STG), and inferior frontal gyrus (IFG) exhibit enhanced activation in response to the voice of one's own mother versus that of an unfamiliar mother. The findings indicate that children process the voice of their own mother uniquely, and pave the way for future studies of how social information processing contributes to the trajectory of child social development.