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血液动力学参数和神经活动之间的脱意味着自发大脑振荡的复杂起源

Ming Li¹, Lihua He¹, Zhuo Zhang¹

¹College of Intelligence Science and Technology, National University of Defense Technology, Changsha, China.

Frontiers in computational neuroscience

|August 16, 2023

概括

N-nitro-L-arginine甲基 (L-NAME) 触发了正常的大脑振荡. 神经元和血液动力学信号中的这些自发的低频振荡可能来自多个来源,挑战以前的假设.

科学领域:

神经科学是一个神经科学.
神经生理学神经生理学
系统神经科学系统神经科学

背景情况:

自发的低频振荡对大脑功能至关重要.
它们的确切起源和潜在机制尚未完全理解.

研究的目的:

为了调查自发低频振荡的起源.
为了探索 L-NAME 管理期间神经元活动和血液动力学信号之间的关系.

主要方法:

在清醒和麻醉的小鼠中结合光学成像和电生理记录.
使用N-nitro-L-arginine甲基 (L-NAME) 诱导大脑活动的变化.

主要成果:

L-NAME显著改变了局部场势 (LFP) 信号光谱,增加了能量和空间同步.
在LFP和血液动力学信号中,L-NAME诱导了规律的振荡.
在清醒的小鼠中观察到血动力学和LFP振荡之间的不同峰值频率.

结论:

自发的低频振荡可能来自多个来源.
神经血管模型可以解释观察到的频率不匹配.
这些发现挑战了低频脑振荡的单源理论.

关键词:

地方现场潜力地方现场潜力氧化合成酶抑制剂氧化合成酶抑制剂这是光学成像.信号脱的信号脱.这是自发的振荡.

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