倚天屠龙记

A |     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.”。    

根据博主“Patrick海外君”的消息，在西班牙伊斯卡尔杯U11组别的比赛中，中国足球小将队以1胜1平的成绩，晋级到了银组的四强。

在银组组别(即第13名至第24名之间的比赛中)小组赛的赛事中，中国足球小将1-1和新博阿迪利亚握手言和，以2-1的比分战胜了Gardia Club，去到了半决赛。

中国足球小将在半决赛中的对手是RSD阿尔卡拉(这支队伍曾在小组赛阶段0-2输给了中国足球小将)。另一场半决赛的对阵双方是CD Puerto Malagueño与维戈塞尔塔。

在金组方面四强队伍也已经落位，半决赛的对话是：

皇家马德里vs皇家贝蒂斯

巴萨vs本菲卡。