During sleep, the researchers found, alpha waves are still present—they're just drowned out by the theta and delta waves, like the din of a noisy restaurant drowns out individual conversations.
研究人员发现，α波在睡眠期间仍然存在——它们只是被θ波和δ波所掩盖了，就如同餐厅中个别的谈话被喧嚣嘈杂的声音淹没一样。
Finally, as you move into REM sleep, your brain is as busy as it was during the day, firing theta waves with burst of alpha and beta.
最终当你进入快速眼动睡眠，你的大脑还是跟白天一样忙，通过和波的爆发激活波。
A change from alpha wave drowsiness to lower frequency theta brain waves signify early sleep.
脑波从波变化到低频波 为早期睡眠。
A change from alpha wave drowsiness to lower frequency theta brain waves signify early sleep.
脑波从波变化到低频波 为早期睡眠。
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