一份新的報(bào)道顯示，哈欠能夠幫助大腦保持涼爽，鼻竇在這個(gè)過程中所起的作用就像是風(fēng)箱。
Yawning isn't triggered because you're bored, tired or need oxygen. Rather, yawning helps regulate the brain's temperature, according to Gary Hack, of the University of Maryland School of Dentistry, and Andrew Gallup, of Princeton University.
哈馬里蘭大學(xué)牙醫(yī)學(xué)院的Gary Hack和普林斯頓大學(xué)的Andrew Gallup表示，哈欠并不是因?yàn)閰挓＞牖蛘咝枰鯕?。相反，哈欠是用來幫助調(diào)節(jié)腦部的溫度。
"The brain is exquisitely sensitive to temperature changes and therefore must be protected from overheating," they said in a University of Maryland news release. "Brains, like computers, operate best when they are cool."
“大腦對(duì)溫度變化十分敏感，所以它不能過熱?！彼麄?cè)隈R里蘭大學(xué)的通訊稿中說道?！按竽X，就像電腦一樣，當(dāng)保持涼爽的時(shí)候能夠維持最佳運(yùn)行?！?b style="BACKGROUND: none transparent scroll repeat 0% 0%" class="label bg2" jquery1322454440843="26">
During yawning, the walls of the maxillary sinuses (located in the cheeks on each side of the nose) flex like bellows and help with brain cooling, according to the researchers.
這兩位研究人員表示，在打哈欠時(shí)，上頜竇的壁部（位于鼻子兩邊的臉頰上）像風(fēng)箱一樣彎曲，幫助大腦降溫。
They noted that the actual function of sinuses is still the subject of debate, and this theory may help clarify their purpose.
他們注意到，鼻竇的真實(shí)作用還尚有爭(zhēng)議，因此這項(xiàng)理論可能能夠幫助揭示鼻竇的作用。
"Very little is understood about them, and little is agreed upon even by those who investigate them. Some scientists believe that they have no function at all," Hack said in the news release.
“人們對(duì)鼻竇幾乎一無所知，而且研究者們也沒有定論。一些科學(xué)家人們鼻竇其實(shí)是沒有任何功能的?！盚ack在這份新聞稿中說道。
The researchers said their theory that yawning helps cool the brain has medical implications. For example, excessive yawning often precedes seizures in people with epilepsy and pain in people with migraine headaches.
研究人員表示他們關(guān)于哈欠幫助大腦降溫的理論能夠有醫(yī)療方面的意義。例如，癲癇和偏頭痛患者就會(huì)經(jīng)常發(fā)現(xiàn)他們哈欠過多。
Doctors may be able to use excessive yawning as a way to identify patients with conditions that affect temperature regulation.
醫(yī)生可以用哈欠過多作為確診病人是否有影響溫度調(diào)節(jié)的癥狀。
"Excessive yawning appears to be symptomatic of conditions that increase brain and/or core temperature, such as central nervous system damage and sleep deprivation," Gallup said in the news release.
“哈欠過多可能是大腦或者核心溫度升高的癥狀之一。這可能是因?yàn)橹醒肷窠?jīng)系統(tǒng)的損壞以及失眠造成的?！盙allup在這份新聞稿中說道。
The paper appears in the December issue of the journal Medical Hypotheses.
他們的論文發(fā)表在《Medical Hypotheses》12月刊中。
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