Theterm'hypnotictrance,'whichIemploy,tellsusnothingofwhatthechangeis,butitmarksthefactthatitexists,andisconsequentlyausefulexpression.Thegreatvivacityofthehypnoticimages(asgaugedbytheirmotoreffects),theoblivionofthemwhennormallifeisresumed,theabruptawakening,therecollectionofthemagaininsubsequenttrances,thean?sthesiaandhyper?sthesiawhicharesofrequent,allpointawayfromoursimplewakingcredulityand'suggestibility'asthetypebywhichthephenomenaaretobeinterpreted,andmakeuslookrathertowardssleepanddreaming,ortowardsthosedeeperalterationsofthepersonalityknownasautomatism,doubleconsciousness,or'second'personalityforthetrueanaloguesofthehypnotictrance.[3]Eventhebesthypnoticsubjectspassthroughlifewithoutanyonesuspectingthemtopossesssucharemarkablesusceptibility,untilbydeliberateexperimentitismademanifest.Theoperatorfixestheireyesortheirattentionashorttimetodevelopthepropitiousphase,holdstheminitbyhistalk,andthestatebeingthere,makesthemthepuppetsofallhissuggestions.Butnoordinarysuggestionsofwakinglifeevertooksuchcontroloftheirmind.。