反应式抑制控制先于公开的事件
Joan Orpella1,2,3, Graham Flick2, M Florencia Assaneo4
1Department of Neuroscience, Georgetown University Medical Center, Washington, DC, USA.
Neurobiology of language (Cambridge, Mass.)
|June 24, 2024
概括
这项研究揭示,右前补充运动区域 (R-preSMA) 的脑活动增加之前口语,这表明反应抑制控制在口语中的作用. 这一发现为口吃事件的神经认知基础提供了新的见解.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 语音科学 语言科学
背景情况:
- 的研究通常集中在流利和不流利的说话者之间的语音运动差异上.
- 人们对口吃语音事件之前的认知过程的关注较少.
- 现有的研究主要检查语音运动过程,忽视认知贡献.
研究的目的:
- 为了研究反应性抑制控制在口吃发言发生之前被激活的假设.
- 探索导致口吃言语的认知过程的神经生理相关性.
- 区分基础的认知过程流利与口吃的语音制作.
主要方法:
- 磁脑电图 (MEG) 用于记录29个口吃者的大脑活动.
- 参与者完成了一个延迟响应任务,涉及有线词生成 (口吃或流利).
- 分析的重点是特定大脑区域的β功率变化,特别是右前补充运动区域 (R-preSMA).
主要成果:
- 在R-preSMA中,与流利言语相比,在口吃言语之前观察到贝塔功率的增加.
- R-preSMAβ功率与口吃的严重程度相关,并预测了口吃与流利的试验.
- 的试验显示言语发作的延迟,可能与抑制控制机制有关.
结论:
- 通过R-preSMA调解的反应性抑制控制似乎在口吃言语之前被触发.
- 这些发现为口吃提供了神经认知解释,突出了公开失语之前的认知过程.
- 自我感知到口吃的预期与增强的抑制控制和增加口吃的可能性有关.
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