資源描述：
《考研英語閱讀例題： how siestas help memory 午睡怎樣增進(jìn)記憶力》由會員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、微信掃描二維碼關(guān)注啟航考研（qh_kaoyan）Howsiestashelpmemory午睡怎樣增進(jìn)記憶力[2010.02.25]TheEconomistMADdogsandEnglishmen,sothesonghasit,gooutinthemiddaysun.AndthebusinesspracticesofEngland’slinealdescendant,America,willhaveyouintheofficefromnineinthemorningtofiveintheevening,ifnotlonger.Muc
2、hoftheworld,though,preferstotakeasiesta.AndresearchpresentedtotheAAASmeetinginSanDiegosuggestsitmayberighttodoso.Ithasalreadybeenestablishedthatthosewhosiestaarelesslikelytodieofheartdisease.Now,MatthewWalkerandhiscolleaguesattheUniversityofCalifornia,Berkeley,havefou
3、ndthattheyprobablyhavebettermemory,too.Apost-prandialsnooze,DrWalkerhasdiscovered,setsthebrainupforlearning.Theroleofsleepinconsolidatingmemoriesthathavealreadybeencreatedhasbeenunderstoodforsometime.DrWalkerhasbeentryingtoextendthisunderstandingbylookingatsleep’srole
4、inpreparingthebrainfortheformationofmemoriesinthefirstplace.Hewasparticularlyinterestedinatypeofmemorycalledepisodicmemory,whichrelatestospecificevents,placesandtimes.Thiscontrastswithproceduralmemory,oftheskillsrequiredtoperformsomesortofmechanicaltask,suchasdriving.
5、Thetheoryheandhisteamwantedtotestwasthattheabilitytoformnewepisodicmemoriesdeteriorateswithaccruedwakefulness,andthatsleepthusrestoresthebrain’scapacityforefficientlearning.Theyaskedagroupof39peopletotakepartintwolearningsessions,oneatnoonandoneat6pm.Oneachoccasionthe
6、participantstriedtomemoriseandrecall100combinationsofpicturesandnames.Afterthefirstsessiontheywereassignedrandomlytoeitheracontrolgroup,whichremainedawake,oranapgroup,whichhad100minutesofmonitoredsleep.Thosewhoremainedawakethroughoutthedaybecameworseatlearning.Thosewh
7、onapped,bycontrast,actuallyimprovedtheircapacitytolearn,doingbetterintheeveningthantheyhadatnoon.Thesefindingssuggestthatsleepisclearingthebrain’sshort-termmemoryandmakingwayfornewinformation.Thebenefitstomemoryofanap,saysDrWalker,aresogreatthattheycanequalanentirenig
8、ht’ssleep.Hewarns,however,thatnappingmustnotbedonetoolateinthedayoritwillinterferewithnight-timesleep.Moreover,noteveryoneaw
