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JoVE Encyclopedia of Experiments
Neuroscience
癫痫诱发大鼠癫痫发作的脑电图记录
癫痫诱发大鼠癫痫发作的脑电图记录
Encyclopedia of Experiments
Neuroscience
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Encyclopedia of Experiments Neuroscience
Electroencephalographic Recording of Epileptic Seizures in Epilepsy-Induced Rats

癫痫诱发大鼠癫痫发作的脑电图记录

Protocol
526 Views
02:19 min
July 8, 2025
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Please note that some of the translations on this page are AI generated. Click here for the English version.

Transcript

以一只癫痫诱导的大鼠为例,在头骨中植入了电极。电极的尖端插入腹侧海马体区域。

将

脑电图或脑电图记录系统连接到植入的电极。

将

大鼠转移到有机玻璃圆柱体中,以记录动物自由移动时的大脑活动。

癫痫诱导导致神经元突触中兴奋性神经递质的释放增加,而抑制性神经递质的释放减少,破坏兴奋性和抑制性信号之间的平衡。

兴奋性神经递质的增加会引发正离子的持续流入,使神经元过度兴奋。这会导致电信号的连续产生。

相邻神经元在高频下爆发同步电活动称为癫痫发作。

使用植入的电极,记录大脑活动的异常爆发,以识别癫痫诱导的大鼠癫痫发作的发生。

首先打开位于

法拉第笼外部的放大器。打开脑电图软件,开始脑电图采集,观察未连接电缆产生的脑电图信号。

接下来,将动物连接到系留脑电图记录系统,方法是用一只手的两根伸展的手指握住动物的头部,并用另一只另一只手将连接器拧紧到电极基座上。

根据

单个动物的电极信号在放大器的每个通道上设置一个放大因子,使脑电图信号符合比例。然后,让动物在研究人员的直接观察下探索新笼子至少一小时。

根据动物的商品调整电缆,并确保电缆不会干扰动物的运动和躺姿。

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