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

一 |     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.”。    

    
    　　WNBA常规赛：西雅图风暴VS多伦多节奏
    
    　　西雅图风暴最近一场比赛在客场70-92大败给达拉斯飞翼，球队近期的连败还在继续，与达拉斯飞翼一役当中，弗洛洁-约翰逊出战26分钟，贡献23分6篮板2助攻3抢断，除此之外，首发出场的贾德-墨尔本和多米尼克-马隆加也都分别得分上双；本场比赛西雅图风暴将回到主场作战，但球队本赛季在主场的表现并不理想，目前主战18场比赛只取得5场胜利。
    
    　　多伦多节奏最近一场比赛在主场78-88输给拉斯维加斯王牌，球队表现糟糕，与拉斯维加斯王牌一役当中，多伦多节奏全队没有球员得分超过20分，表现最好的是替补出战的基亚-努尔斯，她出战30分钟，贡献19分4篮板4助攻，其中三分10投4中，命中率达到4成；本场比赛多伦多节奏是客场作战，但本赛季多伦多节奏客场表现非常糟糕，目前客战17场比赛输掉13场。
    
    　　两支球队本赛季常规赛的前2次交手中，西雅图风暴全都在客场输球，赛季交锋劣势明显。
    
    　　两支球队本赛季的整体表现都非常糟糕，目前都排在积分榜倒数的位置，近来状态也没有明显好转，本场比赛西雅图风暴主场作战，但球队主战并未比多伦多节奏的客场表现好多多少，鉴于双方赛季前2次交手都是多伦多节奏取胜，此番再战多伦多节奏心态占优，此役看好多伦多节奏打出。
    
    　　让分推荐：多伦多节奏（+5.5）
    　　时间：2026-08-27  10:00
    
    　　（蔡蔡）
    
    　　*7M体育原稿  严禁非授权转载
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