Scientists aren't exactly sure what causes the brain freeze when we eat ice cream or other super cold foods too quickly, though some believe it's the result of changed blood.

当我们过快地吃冰激凌或其他超冷食物时，科学家们并不确定是什么原因导致大脑冻结，尽管有些人认为这是血液变化的结果。

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In addition, yawning when it is extremely cold may be maladaptive, as this may send unusually cold air to the brain, which may produce a thermal shock.

另外，在极度寒冷的时候打呵欠也许不大合适，因为这时通常会将冷空气送到大脑，从而使大脑发生热冲击。

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Even if a cold drink was able to temporarily chill your brain a few degrees, it wouldn't be a big deal.

就算冷冻饮料能暂时把你的大脑降下个几度，那也不是什么大不了的事。

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The researcher said that before the body begins to freeze, cold can cause changes in brain chemistry which lead to hallucinations.

VOA: special.2010.02.24

But my brain is so cold I can't remember if I did.

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If a subject is presented with a sentence like, "When she came in from the cold her cheeks were like roses, " many sections of the brain become involved, including those responsible for visual processing.

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