发表于:2011-02-13 00:19 [只看楼主] [划词开启]


The Science of Love

With Valentine's Day just around the corner, love is in the air here on

the Science homepage. We're looking at the science behind falling in love. Like

did you know that there are three phases to falling in love? Flushed cheeks and

a racing heart beat are some of the outward signs of being on cloud nine, but

inside the body there are definite chemical signs that cupid has fired his arrow.

One of the best known researchers in this area is Helen Fisher of Rutgers

University. She has proposed that we fall in love in three stages, each one

involving a different set of chemicals. Find out more on the stages of love and

whether science can help determine whether a relationship will last.

Three Stages of Falling in Love

Stage 1: Lust

Lust is driven by the sex hormones testosterone and oestrogen.

Testosterone is not confined only to men. It has also been shown to play

a major role in the sex drive of women. These hormones as Helen Fisher says

"get you out looking for anything".


Stage 2: Attraction

This is the truly love-struck phase. When people fall in love they can

think of nothing else. They might even lose their appetite and need less sleep,

preferring to spend hours at a time daydreaming about their new lover.

In the attraction stage, a group of neuro-transmitters called 'monoamines' play

an important role:

Dopamine - Also activated by cocaine and nicotine.

Norepinephrine - Otherwise known as adrenalin. Starts us sweating and gets

the heart racing.

Serotonin - One of love's most important chemicals and one that may actually

send us temporarily insane.

Discover which type of partner you're attracted to by taking our face perception



Stage 3: Attachment

This is what takes over after the attraction stage, if a relationship is

going to last. People couldn't possibly stay in the attraction stage forever,

otherwise they'd never get any work done!

Attachment is a longer lasting commitment and is the bond that keeps couples

together when they go on to have children. Important in this stage are two

hormones released by the nervous system, which are thought to play a role

in social attachments:

Oxytocin - This is released by the hypothalamus gland during child birth and also

helps the breast express milk. It helps cement the strong bond between mother

and child. It is also released by both sexes during orgasm and it is thought that it

promotes bonding when adults are intimate. The theory goes that the more sex a

couple has, the deeper their bond becomes

Vasopressin - Another important chemical in the long-term commitment stage.

It is an important controller of the kidney and its role in long-term relationships was

discovered when scientists looked at the prairie vole.

Find out how the three stages can feel even stronger for teenagers in love,

experiencing first love and first sex.

1. 把下划线的句子翻成中文吧

2. 回答下面问题
A: Which kind of chamicals make you get sex drive?

B:Which kind of chamicals fasten your heart beating?

C: Which kind of chamicals get you mad?

最后编辑于:2011-02-13 12:59


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