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1、UNIT3APILLTOFORGET(CBS)Ifthereweresomethingyoucouldtakeafterexperiencingapainfulortraumaticeventthatwouldpermanentlyweakenyourmemoryofwhathadjusthappened,wouldyoutakeit?AscorrespondentLesleyStahlreports,it’sanideathatmaynotbesofaroff,andthathassomecri
2、ticsalarmed,andsometraumavictimsfilledwithhope."Icouldn'tgetmybodytostopshaking.Iwastrembling,constantlytrembling.Memoriesofitwouldjustcomeback,reoccurringoverandoverandover,"subwayconductorBeatrizArguedasrecalls.LastSept.30,Beatrizwasdrivinghernormal
3、routeontheRedLineinBostonwhenoneofherworstfearscametopass:"Uponenteringoneofthebusieststations,amanjumpedinfrontofmytrain,tocommitsuicide,"sheexplains.Beatrizsawthemanjump."WesortofmadeeyecontactandthenIfeltthethudfromhimhittingthetrainandthenthecrack
4、lingsoundunderneaththetrainand,then,ofcourse,myheartstartsthumping,"sherecalls."Shecameintoouremergencyroomafterwards,veryupset.Nophysicalinjury.Entirelyapsychologicaltrauma,"saysDr.RogerPitman,apsychiatristatHarvardMedicalSchoolwhohasstudiedandtreate
5、dpatientswithpost-traumaticstressdisorder,orPTSD,for25years."They'recaughtupsomuchwiththispasteventthatit'sconstantlyintheirmind,"Pitmanexplains."They'relivingitoverandoverandoverasifit'shappeningagain.Andtheyjustcan'tgetinvolvedinreallife."WhenBeatri
6、zarrivedintheemergencyroom,Pitmanenrolledherinanexperimentalstudyofadrugcalledpropranolol,amedicationcommonlyusedforhighbloodpressure...andunofficiallyforstagefright.Pitmanthoughtitmightdosomethingalmostmagical–trickBeatriz’sbrainintomakingaweakermemo
7、ryoftheeventshehadjustexperienced.Inthestudy,whichisstillunderway,halfthesubjectsgetpropranolol;halfgetaplacebo.AskedwhetherheknowsifBeatrizgotthedrugortheplacebo,Dr.Pitmansayshehasnoideaandneitherdoesshe,andthattheresearchteamwon'tknowforanothertwoye
8、ars.IfPitmanisright,theresultscouldfundamentallychangethewayaccidentvictims,rapevictims,evensoldiersaretreatedaftertheyexperiencetrauma.Thestorybeginswithsomesurprisingdiscoveriesaboutmemory.ItturnsoutourmemoriesaresortoflikeJello–theytaketime
