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在口吃的成年人中,静止状态周期性β功率的降低与语音执行的感觉运动控制有关
Andrew Bowers1, Daniel Hudock2
1University of Arkansas, Department of Communication Disorders & Occupational Therapy, College of Education & Health Professions, Fayetteville, AR, USA.
概括
吃的成年人 (AWS) 在静止状态EEG中表现出降低的β节律,特别是在感觉运动区域. 这种降低的β功率与语音任务期间神经活动受损相关,这表明潜在的大脑差异.
科学领域:
- 神经科学是一个神经科学.
- 语音和语言科学 语言科学
- 生物医学工程 生物医学工程
背景情况:
- 吃是一种复杂的语言障碍,可疑有神经学基础.
- 之前的研究表明,成年人吃 (AWS) 的大脑活动发生变化.
- 贝塔 (β) 节律与运动控制和认知过程有关.
研究的目的:
- 为了研究在休息状态下吃 (AWS) 的成年人的异常周期性β (β) 节律.
- 在AWS中的语音任务中探索降低β功率和β事件相关脱同步 (ERD) 之间的关系.
主要方法:
- 在休息状态和音节重复任务期间,从128个通道收集的脑电图 (EEG) 数据.
- 时间独立组件分析 (ICA) 用于隔离神经源.
- 功率光谱密度 (PSD) 和参数化的光谱计算为β频段 (13-30 Hz) 组件.
主要成果:
- 独立组件分析 (ICA) 确定了带有β峰的正面-状中间线和感应运动组件.
- 与对照组相比,口吃的成年人 (AWS) 在这些组件中表现出明显较低的周期性β功率.
- 在语音任务中发现了静止状态感官运动β功率和β事件相关脱同步 (ERD) 之间的显著关系.
结论:
- 大脑频谱中的周期性β峰值可能反映出口的病理生理学差异.
- 改变的中线节奏可以与AWS的默认模式网络 (DMN) 联系起来.
- 侧向感觉运动节律减弱可能与口吃时的运动控制缺陷有关.
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