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大脑皮质神经细胞(神经元)由于新陈代谢,故存在着持续不断的自发的脑电活动,在睡眠时也不中断。从胚胎45天神经细胞开始发育起,至大脑死亡止,脑电活动一直存在。脑电活动停止即意味着生命的死亡。脑电所产生的电位差,只有50(5—1000)微伏(μv),通过电子仪器放大100万倍,并变为机械能后,才能自头皮记录下来,这就是脑电图(EEG)。一、电极安置法国际上采用10—20％法,即前后自鼻根至枕骨隆突的正中连线5
Cerebral cortex nerve cells (neurons) due to metabolism, so there is a continuous spontaneous EEG activity, sleep without interruption. From the embryonic 45 days after the start of development of nerve cells to the brain’s death, EEG activity has always existed. EEG activity ceases to mean death of life. EEG potential difference produced by only 50 (5-1000) micro-volts (μv), magnified 100 million times through electronic equipment, and into mechanical energy, can be recorded from the scalp, which is the electroencephalogram (EEG). First, the electrode placement France Internationally adopted 10-20% method, that is, before and after the nose to the occipital protuberance central connection 5