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

一 |     我们投资的时候，看到产业大事发生，然后会这么做：                              左边的路径：                    适合新兴产业(成长早期),技术路线和龙头未定，押错公司的代价太大，可以选择行 业 ETF。                   也适合同质化的赛道。比如国内的金融行业业务模式相似，彼此之间的效率差别也不大 ，买 ETF 省心。    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.”。                   还有一种情况也适合买 ETF： 个人研究能力有限。很难跟踪公司，避免买到假龙头和财 务暴雷公司。                   右边的路径：          行业增速出现放缓迹象，胜负手在于利润在产业链当中的分配。需要找出“拿最大蛋糕 ” 的环节。最典型的比如新能源行业，光伏行业，消费品。                   行业发展过程当中，大多会经历从左切到右边： 最典型的像 2019 年的新能源，买行业 ETF 就可以获得不错的收益。

二 | 但是 2022 年之后行业增速放缓，竞争激烈，梳理上下游 ，瞄准上游锂矿 、 电池企业，才能显著跑赢其他新能源公司。

三 |                    当然还有一种情况 ，不得不选右边： 没有对应赛道的 ETF， 比如刚出现的新兴行业。                   本文为妙投付费内容，上述仅为摘要，购买本专栏即可解锁完整内容。新用户可免费领本专栏7天阅读体验机会，在妙投APP-我的-权益兑换 输入“妙投888”即可领取。

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