英语听力练习材料：心情可以影响嗅觉

□□□□英语听力练习材料：心情可以影响嗅觉TheSmellOfAnxietyOursenseofsmellcanhavealargeimpactonhowwethinkandfeel.Butdidyouknowthatmoodcanaffecthowwesmell?WhenNeutralOdorsTurnBadAccordingtoastudybyresearchersattheUniversityofWisconsinMadison,feelinganxiouscanmaketypicallyneutralsmellsseemrepugnant.Thestudyinvolvedadozenvolunteerswhoratedapanelofneutralsmells.Then,whileinsideanMRImachine,subjectsweremadetofeelanxiouswithdisturbingimagesofcarcrashesandgrislywarscenes.Theywerethenaskedtorankthepanelsofneutralsmellsonceagain.Butnow,afterhavingbeenmadeanxiousbytheimages,theydescribedsomeofthesmellsasnegative.SoWhat’sGoingOn?MRIrevealedthatduringinducedanxiety,thesmellrelatedcircuitsofthebrainbecameintertwinedwiththebrain’semotionalcircuitry.Normally,thosecircuitsdon’tinteractmuch,butwhenthesubjectswereanxious,thecircuitsmorphedintosomethinglikeaunifiednetwork,essentiallyrewiringthebrain.Andsomehow,thatrewiringaffectedhowthesubjectsinteractedwiththeworldthroughsmell.Sowhydoesthismatter?First,becauseithelpsexplainhowanxietycanfeedonitself.Insofarasbeinganxiousmakesthingssmellgenerallyworse,thoseworsesmellsmayinturncausegreateranxiety,creatingananxietyfeedbackloop.Onthebrightside,understandinghowemotionandsmellcanintertwinemayalsoleadtowaystousesmellasawaytocombatanxietyandothermentaldisordersanintriguingpossibilitythatmaybeborneoutwithmoreresearch心情能够影响你的嗅觉我们的嗅觉对我们的思维和感觉能够产生很大影响。但你知道吗，心情也是能够影响嗅觉的。当中性气味变的刺鼻时根据威斯康星麦迪逊大学研究人员的一份报告显示，焦虑的心情能够让典型的中性气味变得刺鼻。该项研究邀请了12名志愿者并让他们辨别一组中性气味。然后通过向他们播放撞车和可怕的战争场景图像来使他们产生焦虑的情绪，并用核磁共振仪实行观察。接着，志愿者们被要求再次对这组中性气味实行辨别。但是因为之前看到的影片产生了焦虑感，他们这次则表示闻到的气体是刺鼻的。核磁共振结果显示，因为心情焦虑，大脑中跟嗅觉相关的回路跟情绪相关的回路产生了交织。正常情况下，这些回路并不会发生太多的互动，但是当人体变得焦虑时，这两种回路就会变成一个看似交织在一起的网络，本质上来说就是对大脑的回路实行了重组。而且，不知何故，这种改变影响了志愿者通过嗅觉与外界实行联系的方式。为什么知道这个点会很重要呢？首先，它能够有助于解释焦虑是如何变强的。如果说一定水准的焦虑会让人感觉闻到的东西很刺鼻，那么越刺鼻的气