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静脉损失扰乱了阿尔法EEG节奏中的视觉反应

Richard T Ibitoye¹, Patricia Castro², Toby J Ellmers³

¹Centre for Vestibular Neurology, Department of Brain Sciences, Imperial College London, London W6 8RP, United Kingdom; Department of Neurology, Gloucestershire Hospital NHS Foundation Trust, Gloucester GL1 3NN, United Kingdom; Department of Clinical and Motor Neurosciences, Centre for Vestibular and Behavioural Neurosciences, University College London, London WC1N 3BG, United Kingdom.

NeuroImage. Clinical

|July 17, 2023

概括

静脉功能会影响阿尔法节律的反应性,这是一种对认知重要的大脑振荡. 降低前庭功能导致眼睛关闭时的α功率增强减弱,影响感官处理.

科学领域:

神经科学是一个神经科学.
人体生理学人体生理学

背景情况:

阿尔法节奏,一个关键的脑电学振荡,对于感觉运动和认知功能至关重要.
阿尔法节律的反应性,例如随着闭眼的增强,显示了个体间的变化,老化和神经退行等因素减少了它.
视觉和前体系统之间的相互作用表明前体系统在调节阿尔法节律反应性方面的潜在作用.

研究的目的:

为了研究前庭功能对阿尔法节律反应性的影响.
为了确定降低前庭功能是否会改变闭眼时典型的阿尔法振荡增强.

主要方法:

使用脑电图 (EEG) 来记录参与者的大脑活动.
参与者包括15名双边前庭病变患者和15名年龄相匹配的对照.
测试包括记录静坐和站立姿势的EEG,视频头部脉冲测试 (vHIT) 和视觉依赖的杆盘测试.

主要成果:

与对照人群相比,视力功能减弱的个体在眼睛闭上后在前脑对面区域的α电脑电图功率增强较少.
在降低前庭功能组中,vHIT增益与头皮的α功率反应相关.
视觉依赖度的增加与闭眼期间阿尔法增强的减少相关,特别是在前庭损失患者中,并且部分受到vHIT增强的缓解.

结论:

前庭功能显著影响阿尔法节律的反应性,这一发现首次得到证实.
观察到的效应可能归因于减少上升的外围前庭输入和视觉前庭处理中的中心适应性变化.
这些发现突显了感官系统在调节与认知和空间定向相关的大脑振荡方面的综合性.

关键词:

阿尔法节律的节奏反应性反应性反应性垂体门口 (Vestibular) 是一个垂体门口.垂体细胞病变 (Vestibulopathy) 是一种病变.视觉上的依赖视觉上的依赖

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