打哈欠的目的在于为大脑降温_BEC初级作文

打哈欠的目的在于为大脑降温

该项研究的论文2011年发表在《进化神经科学前沿》(Frontiers in Evolutionary Neuroscience)上，文章称，这些人在冬天接受调查时打哈欠的可能性是初夏时的将近两倍，在冬季，他们打哈欠能吸入冷空气来给大脑降温。而在夏初接受调查的参与者哈欠较少，因为那个时节的室外气温跟人的体温几乎是一样的。

Other studies show yawning increases after people experience heat stress or have a heat pack placed on their foreheads.

其他一些研究则表明，在人们中暑或在前额贴上发热贴以后，哈欠就会增多。

Yawning also may build empathy within groups. Yawns are seen as contagious, but 'catching' a yawn depends on a person's ability to feel empathy and closeness with the yawner, says a 2013 research review in the International Journal of Applied Basic Medical Research.

2013年发表在《应用基础医学研究国际期刊》(International Journal of Applied Basic Medical Research)上的一项研究综述称，哈欠可能还会在人群中形成共鸣。哈欠被认为是具有传染性的，但是否能“接过”一个哈欠取决于个人感同身受的能力以及与打哈欠者的亲密程度。

People observed in workplaces or restaurants yawned more often in response to others' yawns when they were kin or close friends with the yawner, the study says. People are less likely to engage in contagious yawns when they have emotional or social disorders that prevent them from feeling empathy, the study says.