响应性神经刺激的状态依赖性影响取决于发作局部化
Sharon Chiang1,2, Ankit N Khambhati3, Thomas K Tcheng4
1Department of Neurology and Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA 94158, USA.
Brain : a journal of neurology
|July 25, 2024
概括
响应神经刺激 (RNS) 的有效性各不相同. 这项研究发现,RNS系统的影响取决于大脑状态和的位置,这表明个性化的刺激可以改善抗药性的发作减少.
科学领域:
- 神经科学是一个神经科学.
- 神经学 神经学
- 生物医学工程 生物医学工程
背景情况:
- 脑响应神经刺激 (RNS) 是一种治疗耐药焦点的方法.
- 很大一部分患者没有通过RNS系统实现有意义的发作减少.
- 目前的RNS疗法定位是标准化的,可能会忽视患者特定的变量.
研究的目的:
- 调查RNS系统的依赖状态效应是否可在一个大型的多中心队列中观察到.
- 为了确定这些依赖状态的效应是否在介质和新皮层之间有所不同.
- 评估个性化的刺激参数是否可以提高RNS系统的有效性.
主要方法:
- 来自多中心RNS系统临床试验队列的81名患者的回顾性分析.
- 根据每日和多天的间歇性型活动周期来定义发作风险状态.
- 分析刺激参数 (电荷密度,频率) 和刺激位置 (半时脉与新皮层) 如何影响风险状态过渡.
主要成果:
- 发作风险状态过渡的概率受到刺激参数,开始风险状态和刺激的大脑区域的影响.
- 电荷密度和刺激频率对基于局部的风险状态过渡产生了相反的影响.
- 国家依赖的RNS显示,新皮质 (双极刺激) 和半导体 (单极刺激) 的风险状态转换的变异性更大.
结论:
- RNS系统有效性的变化可能源于当前的范式,不考虑大脑状态波动或刺激部位.
- 国家依赖的响应性神经刺激效应是显而易见的,并因的位置而异.
- 这些发现支持开发适应性,闭环神经刺激设备,以适应个体大脑状态和发作区域.
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