Thehumanmaterialonwhichthedemonstrationhasbeenmadehassofarbeenratherlimitedand，inpartatleast，eccentric，consistingofunusuallysuggestiblehypnoticsubjects，andofhystericpatients。Yettheelementarymechanismsofourlifearepresumablysouniformthatwhatisshowntobetrueinamarkeddegreeofsomepersonsisprobablytrueinsomedegreeofall，andmayinafewbetrueinanextraordinarilyhighdegree。
Themostimportantconsequenceofhavingastronglydevelopedultra-marginallifeofthissortisthatone’sordinaryfieldsofconsciousnessareliabletoincursionsfromitofwhichthesubjectdoesnotguessthesource，andwhich，therefore，takeforhimtheformofunaccountableimpulsestoact，orinhibitionsofaction，ofobsessiveideas，orevenofhallucinationsofsightorhearing。Theimpulsesmaytakethedirectionofautomaticspeechorwriting，themeaningofwhichthesubjecthimselfmaynotunderstandevenwhileheuttersit；andgeneralizingthisphenomenon，Mr。Myershasgiventhenameofautomatism，sensoryormotor，emotionalorintellectual，tothiswholesphereofeffects，dueto“up-rushes“intotheordinaryconsciousnessofenergiesoriginatinginthesubliminalpartsofthemind。
Thesimplestinstanceofanautomatismisthephenomenonofpost-hypnoticsuggestion，so-called。Yougivetoahypnotizedsubject，adequatelysusceptible，anordertoperformsomedesignatedact——usualoreccentric，itmakesnodifference——
afterhewakesfromhishypnoticsleep。Punctually，whenthesignalcomesorthetimeelapsesuponwhichyouhavetoldhimthattheactmustensue，heperformsit；——butinsodoinghehasnorecollectionofyoursuggestion，andhealwaystrumpsupanimprovisedpretextforhisbehavioriftheactbeofaneccentrickind。Itmayevenbesuggestedtoasubjecttohaveavisionortohearavoiceatacertainintervalafterwaking，andwhenthetimecomesthevisionisseenorthevoiceheard，withnoinklingonthesubject’spartofitssource。
InthewonderfulexplorationsbyBinet，Janet，Breuer，Freud，Mason，Prince，andothers，ofthesubliminalconsciousnessofpatientswithhysteria，wehaverevealedtouswholesystemsofundergroundlife，intheshapeofmemoriesofapainfulsortwhichleadaparasiticexistence，buriedoutsideoftheprimaryfieldsofconsciousness，andmakingirruptionsthereintowithhallucinations，pains，convulsions，paralysesoffeelingandofmotion，andthewholeprocessionofsymptomsofhystericdiseaseofbodyandofmind。Alterorabolishbysuggestionthesesubconsciousmemories，andthepatientimmediatelygetswell。