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精神食粮For your info

不妨阅读此页,为你的大脑补充营养

一心多用,或许对大脑有害!

9/30/2018

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想要一心多用、以此来节省sh时间?可你是否曾想过,人脑究竟适合不适合如此“多工”?

正确来说,人的身体和心智先天上根本不适合多工运作。为什么一心多用会降低工作精度和工作效率?这可以从大脑的生理运作来了解:

由于人脑神经纤维储存的能量很少,所以当我们思考、解决问题或者记忆时,大脑灰质会索取稳定的氧气、葡萄糖和养分等补给。如果这时你同时动用大脑多个部位,人体就会自动把血液分散到这几块区域,如此一来,每个心智活动部位所得的养分都会变少。可以说,多工的数目越多,大脑就越不灵光。

做个简单比喻,这就好像一名消防队员用一条水柱来回喷洒三间着火的房子,可是每间房子分到的水量根本就不足以把火扑灭。

一心多用有害大脑:

最早研究一心多用的报告部分来自英国,其中最有名的是2005年伦敦大学国王学院的心理学家威尔森(Glenn Wilson)博士的研究,经过80个临床试验,他发现,人在工作的时候如果被电话、email和简讯分心,其智商下降的程度比吸食大麻还严重。实验表明,一心多用会使人的平均智商暂时性减少10分(男性减少15分,女性减少5分),相当于一整夜没睡。

另有研究发现,经常一心多用会使大脑灰质萎缩,导致焦虑、注意力不集中、记性变差等副作用。研究显示,人在同一时间接收多项资讯时,不容易掌握重点与排除无用的资讯。

多工的习惯还会改变大脑运作模式。当人从一件事切换到另一件事时,新资讯会刺激大脑分泌多巴胺(Dopamine),使人感到兴奋,长此以往,一心多用会变成一种“瘾”,人会沉溺于这种资讯切换的刺激,再也无法定下心来、专注在一件事上。

资料来源:大纪元
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