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Can the structure of the brain determine gender? In general, women's brains are smaller, tighter, and better organized than men's.
most people think the brains of men and women are very different.
, after all, we are surrounded by pop psychology about gender roles and instincts of "men from Mars and women from Venus."
who have been in contact with children know that girls like dolls and boys like toy guns;
may not be gender-labeled in pink or blue, but most people think men and women have very different brains, just as they choose underwear.
this, researchers at the Science Museum in London began to think about whether our brains were really classified as "male" and "female."
month, some scientists criticized the museum's "sex-o-meter" exhibition, a game that reveals whether your brain is male or female through tests that include logic and spatial awareness.
test results can reflect whether your brain is "male" or "female."
the test showed that men were better able to observe three-dimensional events and more likely to imagine how objects rotate, while women's brains showed better visual memory and were more likely to recognize the nuances of things.
, says Joseph Devlin, an experimental psychology expert at the University of London in the UK, "I was very surprised by the experiment, it was very unwise to classify the brain as male and female, and oversimplified this complex problem."
" museum acknowledges that some of the scientific research tools used in the display have been in use for more than a decade and are planning to update them in the coming months to reflect the latest scientific evidence.
not easy to abandon the idea that the brain is divided into men and women, but scientists around the world have found that the human brain is complex and strikingly similar between different genders.
, is there really a "male" and "female" brain?Why doesn't size matter? For the past two centuries, scientists have believed that men's brains are bigger and therefore smarter.
new study confirms that men's brains are 10 percent larger than women's, but it is too simpled to think that there is a direct relationship between size and intelligence.
study last October found no significant relationship between brain size and IQ test performance.
quality of connections between brain cells is an important factor in determining intelligence.
of brain structure and integration is even more important to the biological basis of IQ," said Professor Jakob Pietschnig of the University of Vienna in New York.
"-biased female, male-biased, between men and women: Some experts believe that the brain is not just full of "male" or "female" parts, but also contains a "fuzzy" area, perhaps a mixture of male and female characteristics, like a unique fingerprint.
Daphne Joel, a behavioral neuroscientist at Tel Aviv University in Israel, studied brain scans of more than 1,400 people last November.
she measured gray matter and white matter in 116 locations in the brain to determine which parts were the most gender-specific.
these areas are classified as female, male and between men and women.
report in PNAS that about 5 percent of the brains tested showed a single sex.
most people show mixed characteristics.
team found some structural differences in the brain between men and women.
, for example, women's left sea mass is usually bigger than men's.
, however, there is a lot of overlap; some women have larger or more mascuminated left sea mass, and some men have smaller left sea mass than the female average.
says the human brain cannot simply be divided into male and female categories.
, the brains of men and women are very different and complex.
Adam Chekroud of Yale University, who led Joel's study into a computer analysis, claims to be able to predict whether the brain is male or female with 95 percent accuracy.
Professor Joel said dr Chekroud's dimensional measurements used in his analysis, if not taken into account, could reduce his accuracy to 65 per cent, which is about the same as guessing.
Marek Glezerman, president of the International Association for Gender Medicine, said: "Functionally, the brains of men and women are different, not better or worse, just different.
cells in the brain can vary by sex because chromosomes are different, Glezerman said.
added that men and women also suffer from very different diseases, such as heart disease and stroke.
most functioning different body systems are controlled by brains with different functions, and are indeed divided into male and female brains.
If the male and female brains are inherently different, then this must be innate, and the structure is not life-long, and a study of transgender people found that the brain changes their "gender-specific" characteristics, depending on the hormonal environment in which the brain is located.
for example, Spanish scientists scanned the brains of 15 women and 14 men who underwent hormone therapy to change gender, and scientists found that testosterone and estrogen had the opposite effect on brain structure.
Dr. Leire Zubiaurre-Elorza, a psychiatrist at the University of Barcelona in Barcelona, said that when women are treated with testosterone to transform them into men, the cortical layer responsible for intelligence, language and memory thickens.
when men were using testosterone to turn them into women, their cortical layers thinned.
relationship between cerebral cortical thickness and intelligence is not fully understood.
, however, as individuals, men and women have very different levels of testosterone and estrogen.
testosterone and estrogen levels change throughout life.
men's testosterone decreases after the age of 30.
estrogen decreases after menopause, but the ovaries continue to secrete male hormones.
, our cortique changes over time.
fact, our brains are not "gender stable" throughout their life cycle.
in some tests, men scored higher on some items and women scored higher on others.
if the brains of men and women are so similar, why do they exhibit such different characteristics? Professor Simon Baron-Cohen, of the University of Cambridge, said: "There is no concept of male or female brains in cognitive terminology.
in some tests, men scored higher on some items, while women scored higher on others, but usually overlapped.
people can't infer what type of brain they have based on their gender, because everyone is not so typical in terms of gender.
" brain is not born to be imprinted on men or women, but by a large number of genes and gender hormones complex mutual, the day after the social experience and other effects.
that the agency's brain sex test machine may soon become an outdated scientific gimmick.
.