CNN News: 未曾相见 但似曾相似

This next segment is going to trigger some serious deja vu. It`s not because we`ve covered it before, but if some reason you think we have, you`re probably in the age range when people experience deja vu the most often.

下面我们所要讲的内容将会让你产生似曾相识的感觉。这并不是因为我们曾报道过类似的内容，而是某些原因使你有这种感觉，那么你可能就处于人们经常经历似曾相识感觉的年龄段。

Dr. Sanjay Gupta explores what it is exactly and the latest ideas from the medical community about why we experience it.

桑基·古普塔医生研究了到底什么是“超时空效应”，以及医学界关于有这种“超时空体验”产生原因的最新思想。

You know, I suddenly have this feeling that I`ve told you this before.

现在我突然有了这种感觉是否我曾经报道过这则新闻。

You know, it happens without warning, the strange feeling that you`ve been there, done that, even though you know you never have.

有时候，感觉就是那么奇怪，毫无警示，奇怪的感觉就突然而至，及即使你知道自己从未做过此事，但是你就感觉自己曾经做过这件事。

The French have a word for it deja vu, meaning already seen.

在法语中有描述此现象的词语“deja vu”(超时空效应)，这个词语的意思是“已经见过”。

Now, while some claimed deja vu is a evidence of the paranormal such as past lives or alien abductions, other says we partially absorb scenes from television or movies to feel a sense of familiarity. It could be that our visual cortex is so fast at sending signals to our memory center, the hippocampus, that some believe the feeling of having seen it before is true, and it is true, but we saw it just a split second earlier.

现在，有部分人表示“超时空效应”证明了一些超自然现象，如过去的生活、外星人绑架，而另外一些人则表示我们曾从电视或者电影上看到一些场景，因此会产生似曾相识的感觉。也可能是我们的视觉皮质向记忆中心——海马体发送信号速度很快，因此有些人认为这种似曾相识的感觉是真的，但是只不过是我们在瞬间之前见过此景，

About two-thirds of us experience deja vu, and oddly enough, it seems to happen most often between the ages of 15 and 25. So, it could be linked to the ongoing development of the brain. Scientists aren`t really sure. Because deja vu occurs randomly among healthy people, it`s been hard to study.

大约有2/3的人经历过这种似曾相识的感觉，但是奇怪的是，似乎这种情境经常发生在15-25岁的人群之间。因此，这种感觉可能与大脑袋的经历有关。科学家们也不是十分确定。因为，健康人群会毫无规律的产生这种“超时空效应”，所以很难进行研究。

Now, we do know deja vu occurs in the medial temporal lobe, that`s this area of the brain over here. That`s where the rhinal cortex, the part of the brain that helps us recognize familiar, interacts with the hippocampus, that`s the part of the brain that stores details of specific memories.

现在，我们知道这种超时空效应发生在内侧颞叶，这同时也是大脑所在的区域。大脑中的顶叶皮层通过与海马体相互作用，帮助我们识别熟悉的事物。而海马体的作用是帮助储存具体信息的细节内容。

Perhaps signals there get crossed, could be that brain circuits convulsed in an almost sort of seizure. And actually, you know what? That makes sense, because people with epilepsy do experience deja vu at the onset of the seizure. So, it`s now on epilepsy where most of today`s research is underway. In fact, neurologists have been able to trigger deja vu and people with epilepsy by stimulating, you guessed it, their medial temporal lobes.

也可能是交叉的信号，在惊厥中大脑回路震撼。实际上呢，这样也讲得通。因为癫痫病患者在发病的时候，也会产生“超时空效应”。现在进行对癫痫病患者的研究。实际上，神经学家通过刺激癫痫病患者的内颞叶，引发了他们的似曾相识的效应。