examined（examine的名词和形容词形式）

Theneedforsleepgoesfarbeyondsimplyreplenishingourenergylevelsevery12hours.Ourbrainsactuallychangestateswhenwesleeptoclearawaythetoxicbyproductsofneuralactivityleftbehindduringtheday.人们对睡眠的需求不仅仅是为了每12个小时补充一下体力。实际上，我们睡觉的时候，大脑会改变状态，清除白天神经活动留下的有毒副产物。Weirdlyenough,thesameprocessstartstooccurinbrainsthatarechronicallysleep-deprivedtoo-exceptit'skickedintohyperdrive.奇怪的是，长期睡眠不足，大脑内也会进行这样的程序，只是它会进入过度清除状态。Researchershavefoundthatpersistentlypoorsleepcausesthebraintoclearasignificantamountofneuronsandsynapticconnections,andrecoveringsleepmightnotbeabletoreversethedamage.研究人员发现，长期睡眠不足会使大脑清除大量神经元和突触连接，而且恢复睡眠也许并不能彻底修复损伤。AteamledbyneuroscientistMicheleBellesifromtheMarchePolytechnicUniversityinItalyexaminedthemammalianbrain'sresponsetopoorsleepinghabits,andfoundabizarresimilaritybetweenthewell-restedandsleeplessmice.意大利马尔理工大学神经科学家米歇尔·贝蕾西带领的团队研究了哺乳动物的大脑对睡眠不足的反应，他们发现休息时间充足的小鼠与睡眠不足的小鼠之间有古怪的相似性。Likethecellselsewhereinyourbody,theneuronsinyourbrainarebeingconstantlyrefreshedbytwodifferenttypesofglialcell-supportcellsthatareoftencalledtheglueofthenervoussystem.就像你身体其他部位的细胞一样，你大脑里的神经元也在不断被两种不同的神经胶质细胞所更新，这些支持细胞经常被称为神经系统的粘合剂。Themicroglialcellsareresponsibleforclearingoutoldandwornoutcellsviaaprocesscalledphagocytosis-meaning"todevour"inGreek.这种微神经胶质细胞通过一个被称为吞噬现象（phagocytosis在希腊语中是“吞噬”的意思）的过程来清除老细胞和衰竭的细胞。Theastrocytes'jobistopruneunnecessarysynapses(connections)inthebraintorefreshandreshapeitswiring.星型胶质细胞的作用是清除大脑中不必要的突触（连接）来恢复并重塑它的神经网络。