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研究发现,女性大脑"比男性年轻四岁"
2019-02-06 UP机器人 2188 0 0  



Men’s brains are nearly four years “older” than those of females the same age, explaining why women stay sharper for longer in old age, according to new research.

根据一项新的研究,男性的大脑比同龄女性的大脑"老"近四岁,这解释了为什么女性在老年时能保持更敏锐的头脑。

A study basing age on metabolism rather than birth date found an average 3.8 year difference between the two.

一项基于新陈代谢而非出生日期的研究发现,两者之间平均年龄相差3.8年。

All brains get smaller with age, and it was already known that men's tend to shrink at a faster rate.

所有人的大脑都会随着年龄的增长而变小,而且人们已经知道男人的大脑会以更快的速度萎缩。

However, new research focused on metabolic processes that have a major influence on brain performance and ageing.

然而,新的研究集中在对大脑表现和衰老有重大影响的新陈代谢过程。

The US team looked at PET (Positron Emission Tomography) brain scan images from 205 men and women ranging in age from 20 to 82.

美国研究小组观察了205名年龄在20岁到82岁之间的男性和女性的PET大脑扫描图像。

PET scans open a window to brain metabolism by measuring the flow of oxygen and glucose. The brain consumes large amounts of glucose sugar for energy, but the pattern of use alters with age.

PET 扫描通过测量氧气和葡萄糖的流动来打开大脑新陈代谢的窗口。 大脑消耗大量的葡萄糖作为能量,但是使用方式随着年龄的增长而改变。

For the study, the scientists used a machine learning computer programme to explore the relationship between metabolic and chronological brain age.

在这项研究中,科学家们使用了一个机器学习计算机程序来探索新陈代谢和大脑实际年龄之间的关系。

They found that metabolic brain ageing tracked chronological ageing in both men and women.

他们发现,无论男性还是女性,代谢性大脑衰老都跟随着时间变化。

But analysis of the data showed that at any given age women's brains were younger, metabolically speaking, than men's - by an average of 3.8 years.

但数据分析显示,从新陈代谢的角度来看,在任何一个特定年龄段,女性的大脑都比男性年轻,平均3.8岁。

The relative youthfulness of women's brains is detectable even among the youngest participants, said the researchers writing in the journal Proceedings of the National Academy of Sciences.

研究人员在美国国家科学院院刊志上写道,即使在最年轻的参与者中,女性大脑的相对年轻也是可以察觉的。

Lead scientist Dr Manu Goyal, from Washington University School of Medicine in St Louis, said: "It's not that men's brains age faster - they start adulthood about three years older than women, and that persists throughout life.

来自圣路易斯华盛顿大学医学院的首席科学家马努· 戈亚尔博士说:"并不是说男性的大脑衰老得更快——他们成年年龄比女性大约大三岁,这种情况一直持续他们的一生。"。

"What we don't know is what it means. I think this could mean that the reason women don't experience as much cognitive decline in later years is because their brains are effectively younger, and we're currently working on a study to confirm that."

"我们不知道这意味着什么。 我认为这可能意味着女性在晚年认知能力不会衰退的原因是因为她们的大脑实际上更年轻,我们目前正在进行一项研究来证实这一点。"

The initial study was conducted by first training the machine learning algorithm using men's ages and brain metabolism data.The programme was then directed to calculate each woman's brain age from its metabolism.When the study was reversed - by training the algorithm on women's data and applying it to men - it produced a slightly different result. However, it still found men's brains to be 2.4 years older compared with women's.

最初的研究是通过使用男性的年龄和脑代谢数据训练机器学习算法进行的。然后,这个程序根据每个女性的新陈代谢来计算她们的大脑年龄。当这项研究被颠倒过来——通过对女性数据进行训练并将其应用于男性——得到的结果略有不同。 然而,研究仍然发现男性的大脑比女性的大脑老2.4岁。

In their paper, the researchers wrote: "We find that throughout the adult lifespan the female brain has a persistently lower metabolic brain age - relative to their chronological age - compared with the male brain.

在他们的论文中,研究人员写道:"我们发现,在成年人的整个生命周期中,女性大脑的新陈代谢年龄——相对于她们的实际年龄——一直低于男性大脑。

"The mean metabolic brain age (minus actual age) was on average 3.8 y (years) less for females compared with males."

女性的平均新陈代谢脑年龄(减去实际年龄)比男性平均小3.8岁。

评论:

Throw More Decoys
A possible hypotheses: When life was brutish and short, the men do their one thing while the women kept the babies. Nature therefore did not need older men, but did need older women to raise the kids. (Remembering that for most of human history, an average human life span was maybe 40 years, and often much briefer.) 

一个可能的假设是: 当生命短暂而残忍的时候,男人只做一件事,而女人养育孩子。 因此,大自然不需要年长的男人,而是需要年长的女人来抚养孩子。 (记住,在人类历史的大部分时间里,人类的平均寿命可能只有40年,而且往往更短。) 

DOT
The extra wear and tear that makes men's brains look 3.8 years older is simply because we use our brains more

使男人的大脑看起来老了3.8岁的额外损耗仅仅是因为我们更多地使用我们的大脑。

Anonymous
Women brains are 4 years younger and they mature faster then boys.Try and equate that!

Tom
As they get older, they get wiser. That would explain the gender difference. 

随着他们更老,他们变得更聪明。 这就可以解释性别差异了

Joe
Women live and prosper longer than men because on the average they, unlike men, don't have to deal with women. The stress of that alone... 

女人比男人更长寿,更成功,因为平均来说,她们不像男人,不需要和女人打交道。 光是这种压力..

Rick
This means they can work 4 years passed retirement, and try to contribute to the nest egg . 

这意味着他们可以在退休年龄后工作4年,并努力为养老金做贡献

Mark
No! There can be no differences between men and women's brains. Remember when the female Harvard professor said there were clearly differences and she was attacked by the left. 

不! 男人和女人的大脑是没有区别的。 还记得那位哈佛大学的女教授说过,两者之间存在明显的差异,她受到了左翼的攻击。

Zeek
So a 60 year old man has a brain that is 60 years old but a 60 year old woman has a brain that is 56 years old. I would have thought that the woman would claim that her brain is 29. 

所以一个60岁的男人有一个60岁的大脑,而一个60岁的女人有一个56岁的大脑。 我本以为女人会说她的大脑是29岁。

Michael
Don’t know if my wife’s brain is younger, but she can remember when I did something wrong 44 years ago like I did it this morning. I forget anything she has done to make me mad almost immediately. 

我不知道我妻子的大脑是否更年轻,但她能记得44年前我做错了什么,就像我今天早上做的那样。 我几乎立刻就忘记了她做过的任何让我发疯的事情

Mr independent
They need to do a research comparing male baldness vs mental sharpness. 

他们需要做一个比较男性秃顶和精神敏锐的研究。

Chris
Men use their brains more throughout their lives so it only makes sense that they would wear out faster. 

男人一生中更多地使用他们的大脑,所以这只能说明他们会更快地精疲力竭

tangible
4 years doesn't amount to much of a percentage advantage in old age.

4年对老年人来说不算什么百分比优势。

Ben
Does this study account for those who identify as women? If not, then this study is discriminatory and invalid. 

这项研究是否考虑到了那些认为自己是女性的人? 如果不是,那么这项研究是歧视性的和无效的。

who me?
TWO things. Men's brains get larger by around 20% than women's due to men's hormones, and there are several areas that gets larger such as the amygdala and parts of the hypothalamus. These areas relate to spatial awareness, etc. As men reach a certain age their hormones are reduced and this leads to a shrinking of the brain back down to a woman's brain size and of course it isn't overnight. As this study suggests, it takes several years for this to happen. 

两件事。 由于男性荷尔蒙的作用,男性的大脑比女性的大约大20% ,还有一些区域比女性的大,比如杏仁核和下丘脑的一些部分。 这些区域与空间意识等有关。 当男人到了一定年龄,他们的荷尔蒙会降低,这会导致大脑萎缩到女人的大脑尺寸,当然这不是一夜之间的事情。 正如这项研究表明的那样,这种情况需要几年的时间才会发生

There is other phenomena, such as higher concentration of rods in the eyes of males, that lead to better visual acuity whereas women have lower rod concentration. This can be tested by looking at women drive when at a stop sign. They (their eye) are unable to properly gauge the distance of a coming car and sometimes start to go, then suddenly stop as they realize the car was coming at a higher rate of speed than they thought. These same women at stoplights perform perfectly as there is no need for the eye to gauge anything other than a change in color. There's more differences that explain many things but too long to go into. 

还有其他一些现象,比如男性眼睛中杆状细胞的浓度较高,导致女性的视力较好,而女性的杆状细胞浓度较低。 这可以通过观察女性在停车标志处开车来验证。 他们(他们的眼睛)无法正确估计到来的汽车的距离,有时开始行驶,然后突然停下来,因为他们意识到汽车正以比他们想象的更快的速度驶来。 这些同样的女人在红绿灯下表现完美,因为除了颜色的变化,眼睛不需要测量任何东西。 还有更多的差异可以解释很多事情,但是太长了。

PeteB
I thought that the conventional wisdom was that girls matured faster than boy

我认为传统观念认为女孩比男孩成熟得快。

Joe
No, no, no, no. It's because in general their brains have done far less heavy lifting throughout life. 

不不不。 这是因为一般来说,他们的大脑在整个生活中承担的重担要少得多。

voiceinacrowd
they also taught us decades ago that girls were more mature than boys of the same age. so, you are telling me that Pelosi, Warren and Clinton have younger brains? not buying it. 

几十年前他们还告诉我们,女孩比同龄男孩更成熟。 所以你是说佩洛西,沃伦和克林顿有更年轻的大脑? 我不相信

Old
Totally wrong.... I live in a retirement village and for the most part, the husbands are older than the wives and still sharper. My wife will be the first to tell you (she is 5 years younger than me) that she is definitely slower in her thinking process as well as not as physically able. This is a totally bogus "finding"... 

完全错了..。 我住在一个退休村,大多数情况下,丈夫比妻子年长,而且更聪明。 我的妻子会第一个告诉你(她比我小5岁) ,她的思考过程肯定比我慢,身体也不行。 这是一个完全虚假的"发现"..

Jessica
Of course, the comments section is full of sexist comments about women. 

当然,评论部分充满了对女性的性别歧视评论

Bob
If you take a mans brain and a woman's brain and sell them both you would get more for the woman's than the mans. Because the woman's has never been used. 

如果你把一个男人的大脑和一个女人的大脑卖掉,那么这个女人的大脑比男人的更值钱。 因为这个女人的从未被使用过

exchange
A few years ago, it was said that women were better at multi-tasking than men. Suddenly texting while driving came along, and guess what - clinical studies (and highway driving) showed that 99% of everyone CANNOT multi task. 

几年前,有人说女性比男性更善于同时处理多项任务。 突然,开车时发短信出现了,你猜怎么着——临床研究(和高速公路驾驶)表明,99% 的人不能同时做多项任务。

Ray
men die younger, loose their hearing and minds sooner than woman all for the same reason. they have to put up with woman !!!!!!!! ooops now the secret is out 

男人比女人死得早,听力和思维也比女人快,原因都一样。 他们不得不忍受女人! 现在秘密暴露了

JAMES
Makes sense. They are not used as much. 

有道理。 它们没有被使用得那么频繁

Nathan
Women use their emotions, not their brains, so that makes perfect sense. 

女人使用的是情感,而不是大脑,所以这很有道理

No Soup For You
LOL! Men use the excuse that age is the cause that we no longer hear as well, that we aren't as physically capable of doing the same things we used to do, and that our memories aren't as sharp. Women just haven't caught on to that ruse yet? 

哈哈! 男人们借口说,年龄是我们不再听到的原因,我们的身体不再能够做我们过去做的事情,我们的记忆不再敏锐。 女人们还不明白这个诡计吗?