研究发现 微笑能给人造成压力也能缓解压力
<p><span word="New">New</span> <span word="research">research</span> <span word="finds">finds</span> <span word="that">that</span> <span word="smiles">smiles</span> <span word="can">can</span> <span word="be">be</span> <span word="used">used</span> <span word="to">to</span> <span word="both">both</span> <span word="soothe">soothe</span> <span word="or">or</span> <span word="attack">attack</span> - <span word="at">at</span> <span word="least">least</span>, <span word="as">as</span> <span word="far">far</span> <span word="as">as</span> <span word="the">the</span> <span word="brain">brain</span>'<span word="s">s</span> <span word="stress">stress</span> <span word="pathways">pathways</span> <span word="are">are</span> <span word="concerned">concerned</span>.</p><p>新研究发现，微笑既可用于安抚，也能产生伤害，至少对于大脑的应激通路确是如此。</p><p><span word="The">The</span> <span word="study">study</span>, <span word="published">published</span> <span word="by">by</span> <span word="researchers">researchers</span> <span word="from">from</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="Wisconsin">Wisconsin</span>-<span word="Madison">Madison</span> <span word="and">and</span> <span word="Bar">Bar</span>-<span word="Ilan">Ilan</span> <span word="University">University</span>, <span word="looked">looked</span> <span word="at">at</span> <span word="the">the</span> <span word="interaction">interaction</span> <span word="between">between</span> <span word="nonverbal">nonverbal</span> <span word="feedback">feedback</span> <span word="and">and</span> <span word="the">the</span> <span word="activity">activity</span> <span word="of">of</span> <span word="the">the</span> <span word="hypothalamic">hypothalamic</span>-<span word="pituitary">pituitary</span>-<span word="adrenal">adrenal</span> <span word="axis">axis</span>, <span word="our">our</span> <span word="body">body</span>'<span word="s">s</span> <span word="central">central</span> <span word="stress">stress</span> <span word="response">response</span> <span word="system">system</span>.</p><p>威斯康星大学麦迪逊大学和巴伊兰大学的研究人员发表的这项研究，对非语言反馈与下丘脑-垂体-肾上腺轴，即我们身体的主要压力应对系统之间的互动进行了调查。</p><p><span word="The">The</span> <span word="authors">authors</span> <span word="report">report</span> <span word="that">that</span> <span word="individuals">individuals</span> <span word="with">with</span> <span word="higher">higher</span> <span word="heart">heart</span>-<span word="rate">rate</span> <span word="variability">variability</span> <span word="showed">showed</span> <span word="the">the</span> <span word="widest">widest</span> <span word="range">range</span> <span word="of">of</span> <span word="responses">responses</span> <span word="to">to</span> <span word="different">different</span> <span word="smiles">smiles</span>.</p><p>作者报告称，心率可变性大的人对不同笑容的反应差异性也更大。</p>
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