Birds that are literally half asleep—with one brain hemisphere alert and the other sleeping—control which side of the brain remains awake, according to a new study of sleeping ducks.
根据一项关于睡觉的鸭子的新研究来看，半睡半醒的鸟儿——大脑的一个半球处于警觉状态，另一个半球处于睡眠状态——控制着大脑的哪一边保持清醒。
我们只有一个大脑。
The researchers presented stimuli to one brain hemisphere at a time, which allowed them to challenge either the damaged or intact prefrontal cortex in the patients with brain damage.
研究者每次刺激一个大脑半球，这使他们可以对额叶皮质受损或是完好的脑损伤患者的表现均做出检验。
Unfortunately, humans, the sole vessels of knowledge, are very inefficient at passing it along from one brain to another.
遗憾的是，作为知识的唯一持有者，人类把知识从一个大脑传递到另一个大脑的效率却非常低。
Unfortunately, humans, the sole vessels of knowledge, are very inefficient at passing it along from one brain to another.
遗憾的是，作为知识的唯一持有者，人类把知识从一个大脑传递到另一个大脑的效率却非常低。
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