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Scientists Explain Why Taxing Mental Work Wears You Out_我的网站

一 | 1月12日，根据沈阳铁路的消息，中国铁路股份有限公司沈阳铁路局与支付宝铁路携手合作，进一步提升旅客购买体验。    A team of scientists has discovered a likely explanation for why one may feel exhausted after engaging in intense cognitive work.,In their study, published in the Current Biology last week, the researchers argue that intense cognitive work, when it lasts for several hours, results in the buildup of potentially toxic byproducts in the prefrontal cortex part of the human brain, which then affects a person’s behavior.,“Influential theories suggested that fatigue is a sort of illusion cooked up by the brain to make us stop whatever we are doing and turn to a more gratifying activity,” Mathias Pessiglione of Pitié-Salpêtrière University in Paris, said as quoted in a news release by Cell Press. “But our findings show that cognitive work results in a true functional alteration—accumulation of noxious substances—so fatigue would indeed be a signal that makes us stop working but for a different purpose: to preserve the integrity of brain functioning.”,During the course of their research, the team employed magnetic resonance spectroscopy to monitor the brain chemistry of two groups of people during a workday, with one group performing easy cognitive tasks while the other engaged in more complex mental activities.,Only the latter group ended up exhibiting signs of fatigue, as well as a tendency to favor “options proposing rewards at short delay with little effort,” as the news release put it.,AmericasChild Survives After 7 Minutes Without Blood Flow to Brain During Surgery, US Cardiologist Reveals11 August, 16:41 GMT,Furthermore, members of that group had higher levels of glutamate in the synapses of the prefrontal cortex, leading the researchers to suggest that the accumulation of glutamate “makes further activation of the prefrontal cortex more costly,” and thus a mentally exhaustive workday makes cognitive control more difficult.,Unfortunately, there seems to be no fancy way to deal with this problem other than the tried and tested method that is probably as old as history itself.,“I would employ good old recipes: rest and sleep!” Pessiglione remarked. “There is good evidence that glutamate is eliminated from synapses during sleep.”。1月9日至3月31日，沈阳、沈阳、长春、大连、丹东等20个车站联合开展了为期三个月的自助票红色现金结算活动。乘客可以通过扫描密码直接用这些钱从红色信封中取出现金。参加本次活动的车站有长春、沈阳、沈阳北、大连、吉林、大连北、丹东、通辽、锦州、四平、鞍山、辽阳、本溪、山海关、延吉西、长春西、锦州南、白城、松原、赤峰等站。以下是活动的内容：1.在活动中，用户打开支付宝，扫描站内展示的独家资料上的二维码，注意12306生命码。可获得3-100元火车票购买专用红包（红包可在支付宝卡包中查看），活动限额为每天3000元，先来先得，后到。活动仅限于实名用户。在活动期间，每个用户可以享受2个红色包。每个用户每天只能接收1个红色数据包。

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Published on:11:35:20