许多哺乳动物的奶含有大麻素，这种物质可以刺激大脑中的某些受体。
The milk of many mammals contains cannabinoids, substances that are known to stimulate certain receptors in the brain.
受惊吓时会让你的大脑充满一些健康的化学物质，能刺激你情绪，让你十分兴奋。
Being frightened makes your brain flood with healthy chemical substances that excite your mood and release feelings of great excitement.
另一种联系可能会涉及到大脑温度的变化和神经递质（传递神经冲动的物质）的释放。
Other links may involve changes in brain temperature and the release of neurotransmitters (substances that transmit nerve impulses.)
为了研究大麻素的作用，研究人员给新生老鼠注射了一种化学物质，这种化学物质可以阻止大麻素到达它们大脑中的受体。
To investigate the function of cannabinoids, researchers injected newborn mice with a chemical that is known to block cannabinoides from reaching their receptors in the brain.
报告说，正在发育的大脑特别容易受到这些产品里可能含有的某些化学物质的毒性影响，而这些化学物质造成的损害可能是永久性的。
The developing brain, the report says, is particularly vulnerable to the toxic effects of certain chemicals these products may contain, and the damage they cause can be permanent.
科学家推测，一个人大脑释放的这些化学物质的数量多少很可能表明这个人对他或她的医生有多大的信心。
Scientists theorized that the amount of these chemicals released by a person's brain quite possibly indicates how much faith the person has in his or her doctor.
人们尝试新鲜事物或是冒险性举动时，大脑中的某种化学物质会让人产生愉快感。
When people do something new or risky, a chemical (化学物质) in the brain creates a pleasant feeling.
她走出来了，朝我走来，我也朝她走去，我的感情、眼泪和大脑里的化学物质，你知道的：就像发生了一场核聚变。
She came forth and walked forward, and I walked forward, and my feelings and tears and the chemical in my brain, you know, it was like a nuclear fusion.
研究人员发现，一些电子产品在夜间发出的人造光可能会减少大脑中有助于睡眠的化学物质。
Researchers find that man-made light from some electronic products at night may reduce the brain chemicals that help sleep.
有趣的是，当我们的大脑得到新信息时，它会释放一种与快乐相关的化学物质，使得寻找信息成为像进食一样的另一种惬意活动。
An interesting thing is that our brain will release a pleasure-related chemical when it has been given new information, making seeking information much like eating—another pleasant activity.
即正电子放射断层摄影术，是一项成像研究，它能使医生评价大脑对某些物质的使用。
PET, or positron emission tomography, is an imaging study that allows doctors to evaluate the use of certain substances by the brain.
而大脑白色物质内的不健康意味着脑细胞之间交流的欠缺、不良。
And poor quality of the brain's white matter indicates poor, inefficient communication between brain cells.
但现在，赫希博士表示，自己已经欣喜的接纳了“物质大脑和思想不可思议的一致性”，因为这样的发现使人类的整体改进成为了可能。
Now, however, Dr. Hirsch says she joyfully embraces “the astonishing unity of the physical brain and the mind” for the potential it clearly holds for improving the lot of humankind.
屏障中的特殊蛋白质负责运输大脑所需的营养及物质。
Special proteins in the barrier transport necessary nutrients and substances into the brain.
因此，观察大脑成像时，她将注意力放在大脑的白色物质即神经组织上。
So using brain imaging, she focused on the white matter, or nerve tissue, of the brain.
大脑的多巴胺系统出现了物质滥用与精神疾病的问题。
Problems with the brain's dopamine system have been linked to substance abuse and mental illness.
在近期的研究，她报告说，发现了酗酒人员的大脑白色物质中有显著差异。
She reports in her recent study a marked difference in the white matter of the binge drinkers.
物质是构成世界的根本，就算是我们的大脑结构也是物质构成的，现在科技已经可以深入到分子原子层面了，解决了物质的构成问题。
Materials are the basis for this world, even our brain is made up of materials. The technology today has gone deep into the level of molecues and atoms, solving the problem of material structure.
特别是胆碱，近年来认为是维持大脑功能的重要物质。
They also have choline, recently in the newsfor its importance in brain function.
这些舒缓的感受最可能是释放内啡肽的结果，它是大脑化学物质可以产生兴奋和缓解疼痛。
These soothing feelings most likely result from the release of endorphins, brain chemicals that relieve pain and can produce euphoria.
肥胖的受测者们较容易使得包围并隔离大脑中的神经纤维的物质所受到伤害，而这一部分物质则利于优化大脑的认知功能。
The obese subjects tended to have damage to a particular substance that surrounds and insulates nerve fibres in the brain, suggesting that substance is needed for optimal cognitive function.
如早先提到的，这些区域是最后停止髓鞘(大脑中的白色物质，能提高信息传输速度)化的。
As noted earlier, these areas are the last to lay down the fatty myelin insulation-the brain's white matter-that speeds transmission.
这表明大脑中的某些物质与辨别愤怒的情绪有关联，特别是容易发怒的人。
This suggests that something in the brain is attuned to picking out angry expressions, and that it is especially concerned about angry men.
血脑障壁更是重大障碍，它有着阻止血液中许多物质进入我们大脑的作用。
The blood-brain barrier - which stops most things in the blood stream from crossing to our brains - is much too great an obstacle.
或是物质滥用对损毁大脑功能负有责任呢？
Or is substanceabuse responsible for damaged brain functions?
如果你的大脑依靠化学物质的话，那么不要指望你的睡意会在合适的时间到来。
Don't expect natural sleepiness to occur at the right time if you're screwing with your brain chemistry.
神经系统和大脑需要营养物质。
有些鸡块里含有铝，这是一种有毒物质，对大脑和新陈代谢都有严重影响。
Some chicken nuggets contain aluminum which is toxic to the brain and poisons the metabolism.
抑郁症似乎与大脑中某种化学物质的不平衡有关。
Depression seems to be related to an imbalance of certain chemicals in your brain.
研究人员称进一步的研究应关注患有如创伤后紧张症的精神疾病病人使用该大脑化学物质的效果。
Researchers say future studies could look at the effects of the brain chemical in patients with other psychiatric disorders, such as post-traumatic stress disorder.
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