没有证据表明,在口吃的人中,语言侧向性发生变化,而在不同的语音和语言脑成像研究中,口吃有所不同
Birtan Demirel1, Jennifer Chesters1, Emily L Connally1
1Department of Experimental Psychology, Wellcome Centre for Integrative Neuroimaging, University of Oxford, Oxford OX2 6GG, UK.
Brain communications
|September 30, 2024
概括
这项研究没有发现任何证据表明,与流利地说话的人相比,口吃的人的大脑语言侧向化有所不同. 脑成像数据显示,在两组人群中,语音和语言的脑主导程度具有相似的模式.
科学领域:
- 神经生物学 神经生物学 神经生物学
- 语音和语言科学 语言科学
- 认知神经科学 认知神经科学
背景情况:
- 不完整的大脑主导理论表明,口吃是由影响语言横向化的半球竞争引起的.
- 最近的大脑成像研究表明,的人的大脑活动发生了变化,这促使人们重新评估这一理论.
研究的目的:
- 为了研究口的人和通常流利的说话者之间的语言横向化差异.
- 为了测试改变大脑优势导致口吃的假设.
主要方法:
- 功能性磁共振成像 (fMRI) 用于从119名参与者 (吃的儿童和成年人和对照组) 收集数据.
- 参与者参与了四项任务:公开的句子阅读,公开的图片描述,隐藏的句子阅读和隐藏的听觉命名.
- 对额叶和叶计算了侧面性指数,包括特定的语言区域 (pars opercularis和pars triangularis).
主要成果:
- 在口吃的人和通常流利地说话的人之间,没有发现横向性指数的显著差异.
- 贝叶斯分析支持了零假设,表明语言横向化没有差异.
- 左侧,右侧或双边侧面的分布在各组之间没有差异.
结论:
- 这些发现并不支持不完整的大脑主导理论作为口吃的解释.
- 大脑中的语言侧面化似乎没有减少或不同于的人与流利说话的人相比.
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