中國(guó)網(wǎng)站品牌欄目（頻道）
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 Mind blowing: Researchers have discovered that when rats have sex, their brains are altered |
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Losing your virginity really could be life-changing. Having sex apparently alters the structure of the brain – in men, at least. A Japanese study of tiny spines that occur between brain cells revealed virgin male rats to have far more of them than more sexually experienced counterparts. This implies the spines drive sex for the first time and then they shrink or disappear. It may one day be possible to create a pill for humans that increases the growth of spines. This could help boost libido, New Scientist reports. Stuart Tobet, a neuroscientist in the US, said the studies provide a ‘glimpse into how changes in the structure of spines contribute to the ability to display sexual behaviours in rats and perhaps by extrapolation, to other mammals, including humans.’ Once their mission is achieved, the spines are no longer needed and so shrink or disappear. What is more, the microscopic spines may also affect men’s early sexual encounters, this week’s New Scientist reports. It was already known that several brain regions linked to sexual behaviour differ in size between the sexes in humans and other animals. To find out whether an area known to be bigger in males was altered by having sex, the Saitama University researchers compared the brains of male rats who had never had sex before with their more experienced cage-mates. They found that the number of brain spines was significantly lower in the non-virgins. Researcher Shinji Tsukahara says the decrease in spines may have been caused by a number of factors, including hormonal changes triggered by the presence of a female. He said that the spines may serve as a ‘one-way road to learn how to mate’ and once used they are no longer needed. (Read by Lee Hannon. Lee Hannon is a journalist at the China Daily Website.) (Agencies) |
失去處子之身確實(shí)會(huì)改變你的人生。初嘗禁果會(huì)顯著地改變?nèi)说拇竽X結(jié)構(gòu)——至少對(duì)男人是如此。 日本的一項(xiàng)對(duì)于腦細(xì)胞間微小脊髓組織的研究揭示，“處男”老鼠相比那些有過(guò)性經(jīng)驗(yàn)的老鼠有更多這種脊髓組織。 這意味著這種脊髓組織促使老鼠發(fā)生了初次性行為，并在初夜過(guò)后變少或消失。《新科學(xué)家》報(bào)告稱，將來(lái)有一天可能會(huì)發(fā)明出一種能令這種脊髓組織增加的藥丸，為人類(lèi)服務(wù)。這種藥丸將有助于提升性欲。 美國(guó)神經(jīng)學(xué)家斯圖亞特?托比特說(shuō)，這些研究讓人們能夠“一睹大腦脊髓結(jié)構(gòu)的改變對(duì)于老鼠性能力的影響，這種影響也許可以推及包括人類(lèi)在內(nèi)的其他哺乳動(dòng)物。” 一旦這種脊髓組織的使命完成了，它們就不再被需要，因而也就減少或消失了。 而且，據(jù)《新科學(xué)家》本周的報(bào)道，這種微小的脊髓組織還會(huì)影響男人的早期性行為。 現(xiàn)在已經(jīng)獲知人類(lèi)和其他動(dòng)物的幾個(gè)和性行為相關(guān)的大腦區(qū)域在兩性之間存在著大小之差。 為了查明性行為是否會(huì)改變男性較大的這塊大腦區(qū)域，埼玉大學(xué)的研究人員將從未有過(guò)性生活的雄性老鼠和有過(guò)性經(jīng)驗(yàn)的雄性老鼠的大腦做了比較。 他們發(fā)現(xiàn)，“非處”老鼠的這種大腦脊髓組織的數(shù)量明顯比“處男”老鼠要低。 研究人員冢原慎司說(shuō)，脊髓組織的減少可能是由多種因素引起的，包括雌性出現(xiàn)引發(fā)的荷爾蒙的改變。 他說(shuō)，脊髓組織也許是“學(xué)習(xí)如何性交的單行道”，一旦被使用過(guò)，它們就不再被需要。 相關(guān)閱讀 （中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津 陳丹妮 編輯：Julie） |
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Vocabulary: extrapolation: 推斷 microscopic: 只能從顯微鏡里看到的；微小的 |
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