你睡觉时身体干的四件疯狂事_BEC初级作文

你睡觉时身体干的四件疯狂事

2. BRAIN WAVES START TO GET EERILY SPECIFIC

2. 脑电波变得异常具体

Neural oscillations, or brain waves, are created by the electrical signals in your brain. Certain waves correlate with certain activities. Scientists are aware of them, and can use them to measure stuff, but have absolutely no clue what purpose they serve. When you sleep however, your neural oscillations become oddly specific for each stage of sleep. Alpha activity, theta waves, delta waves... they all are emitted during very specific points in your sleep cycle. So much so, that scientists can pinpoint the exact part of sleep you're in -- just from the type of brain wave given off.

神经震荡，或脑电波，是由大脑内的电信号产生的。特定的脑电波与特定的活动相关联。科学家们了解这种联系，并能够利用它们判定事物，却毫不清楚它们有什么用途。然而当你熟睡时，神经震荡在睡眠的各个阶段变得异常具体。α行为，θ电波，δ电波……他们全都在睡眠周期中十分具体的点发射。如此，科学家们便可以仅仅通过发射出的脑电波类型，来精确指出你所处的睡眠阶段。

3. BLOOD FLOW TO YOUR HEAD IS RAMPED UP

3. 颅腔血流量增加

Your brain gets more oxygen and nutrients, and you can blame it upon a rush of blood to the head. (No Coldplay fans out there? Really?) Since your brain is one of the only parts of your body that's still fully functioning, what blood is still being pumped gets diverted to your head. This powers all the maintenance functions going on in your skull.