the normal brainwave in the electroencephalogram of a person who is awake but relaxed; occurs with a frequency of 8-12 hertz 目覚めている状態でなおかつ安静時に、人の脳波図に現れる正常時の脳波。8から12ヘルツの周波で起こる。
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【上位】 (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph 脳波計で見るために大脳皮質の各所に置いた電圧の速い変動。
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