…(1) Sleep stages There are two types of sleep: non-REM sleep and REM sleep. Non-REM sleep is usually divided into four stages. In the first stage (S1), the alpha waves (8-12 Hz) that occur during wakefulness disappear and are replaced by smaller amplitude theta waves (4-7 Hz). … *Some terminology that refers to "non REM sleep" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…(1)睡眠段階 ノンレム睡眠とレム睡眠の2種類の睡眠がある。ノンレム睡眠non REM sleepは通常4段階に区別されている。第1段階(S1)は覚醒時のα波(8~12Hz)が消えて振幅の小さいθ波(4~7Hz)となる。… ※「non REM sleep」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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