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Scientists Explain Why Taxing Mental Work Wears You Out_我的网站
A | 再过一周就是学校假期，不少家长开始为孩子安排假期活动。受访编程学院表示，询问量同比增加约10%。 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.”。有语文学院首次推出中文成语主题假日营报名几乎满额。
B | 一家中文语文学院将在9月学校假期开办成语主题假日营，每天教孩子两句新成语。业者表示由于去年疫情刚结束，家长多选择带小孩出国度假。今年出国需求减少，更多人报名参加假日营，人数同比增加30%。为激发孩子对学习成语的兴趣，学院增添了趣味十足的活动，例如在学习“画龙点睛”这个成语时，学生可以亲手制作舞龙的手工艺品。
C | 在学习“杯弓蛇影”时，还会有个弓箭的科学手工活动。
D | 哈哈中文语文学院创办人郭婉婷说：“他们现在也会比较注重一些不是那么课业上的华语的运用。像比如说我们这样子的假日营，会以比较趣味的方式，让小朋友多说多听华文。所以可能对有些家长来说，他觉得这个蛮新鲜的。”一家编程学院发现在政府宣布更新高才教育计划的制度后，询问量同比增加一成，很多是来自小学低年级生的家长，反映了家长对培养孩子的计算思维和升学规划的重视。
E | 编程学院联合创办人符永宁说：“学生在学校、课外或者是在家里 ，都可以运用到计算思维来解决问题。编程现在已经是直接收生计划其中一个选项，很多家长已经开始考虑，是否编程是适合他们孩子们的赛道。”9月学校假期编程营预计将有超过100名7岁到18岁的学生报名参加。
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Published on:11:51:49