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From philosophers and historians, to poets and scientists alike, love has captured our imagination and curiosity for centuries.
Many have experienced the rush of falling in love for the first time.
Or the deep feelings of love for your children, family and friends.
But what is love from a biological perspective?
No doubt it's intertwined with the evolutionary survival of our species.
After all, you come from an unbroken line of organisms reproducing from the very first microbe that split in two,
to your ancestors who have all successfully mated since the dawn of time.
Sadly, if you fail to have children, this perfect streak comes to a halt.
But while we're driven to reproduce, we're also driven to make sure our offspring survive.
Though we often associate love with the heart, the true magic can be seen inside the brain.
It may not be entirely surprising to find out that the brain of somebody in love
looks awfully similar to one on cocaine.
Cocaine acts on the pleasure centers in the brain by lowering the threshold at which they fire.
This means that you feel really good a lot easier.
We see the same thing in the brains of those in love,
but it's not just the cocaine or the love that makes you feel good.
It's the fact that anything you experience will now more easily set off pleasure centers and make you feel good.
Because of this you not only fall in love with the person, but begin to build a romanticized view of the world around you.
Interestingly, nearby pain and aversion centers begin to fire less, so you become less bothered by things.
Simply put we love being in love.
So what chemicals are at work to make all of this happen?
Both during orgasm or by simply looking at photos of a loved one,
there is a surge of dopamine and norepinephrine from the ventral tegmental area.
This not only triggers sexual arousal in your racing heart,
but gives you the motivation, craving and desire to be with a person more and more.
You see romantic love is not simply an emotion,
it is a drive from the motor of the mind.
And this motor brings about intense energy focused attention and elation.
The pleasure centers are part of the brains reward system.
The mesolimbic dopamine system.
If you stimulate this region while learning,
learning becomes much easier because it's pleasurable and perceived as a reward.
We also see a surge in the neuromodulator oxytocin from the nucleus accumbens.
Sometimes called the "commitment neuromodulator" because in mammals
it helps to reinforce bonding or attachment.
When prairie voles are injected with either oxytocin or vasopressin,
they will instantly find a mate to pair a bond with.
Finally, studies have shown that people in love have low levels of serotonin.
Which is similar to people with obsessive-compulsive disorder.
This is likely the cause of our obsession and infatuation during early love.
Amazingly, these areas associated with intense romantic love can remain active for decades,
and more there are many other physiological and psychological components that add to the mix,
the truth is, science still knows very little about exactly why or how love works.
And yet somehow, we all seem to know it only (when we) feel it.
Got a burning question you want answered?
Ask it in the comments, or on Facebook and Twitter.
And subscribe for more weekly science videos.
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愛神來了我知道!愛的科學原理(The Science of Love)

111214 分類 收藏
Why Why 發佈於 2017 年 8 月 16 日    Peggy Sha 翻譯    Kristi Yang 審核

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愛是世界上最強大的力量之一。偶像劇裡都說:「愛是一種感覺,是一種怦然心動。」但是,如果從科學的角度切入,愛還是這麼地羅曼蒂克嗎?想了解愛讓人愉悅的原因嗎?現在讓我們一起來用科學分析愛吧!

1capture somebody's imagination 0:03
imagination 原指「想像力」,在此有「注意;興趣」的意思,因此 capture the imagination of somebody'scapture somebody's imagination 就表示「使某人感興趣;吸引某人」,也可以說 capture one's attention
The story of Harry Potter captures children's imaginations.
哈利波特的故事引起孩子的興趣。


capture 同時也有「捕獲」的意思,受詞通常是動物或人。
After three hours, police officers finally captured the alligator.
三小時之後,警察終於捕獲那隻鱷魚了。


除此之外,「佔據頭條」也可以用 capture the headlines 來表達。
The gossip about Taylor Swift and Tom Hiddleston has been capturing the headlines this week.
小天后泰勒絲跟洛基的緋聞在本週持續攻佔頭條。


2come to a halt 0:32
halt 是指「停止;中止」, come to a halt 就表示某事物「停止運作」,也可以說 come to a standstill ,或是 wind up
As the semester is going to end, our team project will soon come to a halt as well.
學期即將結束,我們的小組計劃也將告一個段落。

I will wind up the meeting soon.
我很快就會把會議結束。


*同場加映:
新興市場 前景堪憂 Gloomy tide taints emerging markets | FT Markets


3set off 1:02
set off 在這裡有「使...開始運作」之意。所以 set off pleasure centers 就是「使快樂中樞開始運作」。 set off 另有「開始」之意,常用的片語包含 set off on a journey ,也就是「開始一段旅程」。
They are going to set off on a journey to America.
他們即將出發前往美國。


另外, set off 也有「發射」的意思,像是發射煙火、飛彈等等。
Somebody was setting off fireworks down the street.
有人在街上燃放煙火。


4bother 1:14
bother 最常用的意思就是「打擾」囉!像是 sorry to bother you. 「不好意思,打擾你了。」就是很實用的片語喔!

以下列出幾個跟 bother 相關的片語,很多片語的意思,都跟我們以為的不一樣喔!

I am not bothered. 是很多人容易誤解的片語。因為,這句話的意思不是「我沒有被打擾」,而是指「某件事對我而言不重要」喔!
I am not bothered whether we go out or stay in.
我們要外出還是待在家,對我來說都沒差。


someone can't be bothered ,這句話的意思不是「這個人不能被打擾喔!」,而是「某人因位懶惰,或是覺得某件事太困難,而不願意去做。」
She couldn't even be bothered to say hello.
所以,這句話的意思就是:「她根本懶得打招呼」喔!


看完影片才發現,原來「愛」不只是一種怦然心動而已呢!

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