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8/12/2019 Near-Death Experiences & Conscious Experience Article
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THETHETAASSOCIATIONNEWSLETTERSPRING2014
CanNearDeathExperiencesBeRevealingAbout
ConsciousExperience?
BYBRYANWILLIAMS
Numerouspersonalaccountssuggestthatmanypeopletendtoencounteranumberofvividand
profound spiritual aspects during a neardeath experience (NDE). These can include venturing
through a dark tunnel, seeing otherworldly visions of the afterlife, encountering deceased
relativesandfriends,andsensingthepresenceofdivinebeings,amongothers.13Butperhapsone
of themost interestingaspects fromaparapsychological researchperspective is the sense that
people sometimeshaveof stillbeing fullyawareof their surroundingsat timeswhen they are
presumedtobefullyunconscious,comatose,orevenclinicallydead.Illustrativeexamplesofthis
maybefoundinpersonalaccountssenttothePsychicalResearchFoundationbyLucynaEllis,who
hadexperiencedanNDEontwoseparateoccasions.HerfirstNDEoccurredinconjunctionwitha
serioushealthcrisisthatsuddenlyarosewhileshewasparticipatinginadancemarathonin1993.
Theaccountofherexperiencewhileunconsciousisasfollows:
Ifeltsubmergedinsuchawarmth;abeautifulsenseoflove.Ithadsuchblissandharmony,withno
judgment.Ifound
myself
in
some
kind
of
tunnel
and
at
the
end
there
was
ahuge
shining
bright
light.IinstantlybegantoruntowardstheendofthetunnelsoIcouldgettothelight.IfeltIwasnt
allowed to get through the light and at that point, I foundmyself in horrible darkness again. I
startedtoshiverbadlyandfeltthepainagain,andIheardvoicessaying,Sheiscomingback,sheis
comingback
Duringherperiodofunconsciousness,Mrs.Ellisrelatedhowshehadbeenawareofcertainevents
goingonaroundherbody:
Irememberintuitivelytherusharoundme.Iknewthe[IV]dripwasbeinginstalledandfeltsome
splashonmyarmIrememberthinking,Whataretheydoingtome?
.Atsomepoint,Irememberjustknowingthatmybestfriendwastouchingmyhair.Iactually
wantedher
to
talk
to
me
and
reassure
me
that
Iwill
be
OK,
and
was
angry
with
her
that
she
didnt
dothat. Iwastalking toherandexpectedher to talkbacktome; thatwasquitea frustrating
feelingbecauseIwasconvincedshecouldhearmebutofcourse,shedidnot.
.WhenIwasresuscitated,Iconfrontedmyfriendaboutmyattempttocommunicatewithher
andshewasshockedatwhatIwassayingbecausewhenshestrokedmyhairshecouldseemyblue
lips,bluefaceandnosignsoflife.Ihadnopulseandtherewasnobreathing,andithadnoteven
occurredtohertotalktome.
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Mrs.Ellisdescribeda similarkindofawarenessduringher secondNDE,whichoccurred
following a surgical procedure to treat the complications she experienced in conjunctionwith
givingbirthtohersecondsoninMayof2009:
I remember sensingurgency aroundme and seeing lots of people. I also remember seeing
somebody
open
my
eyelids
and
shine
a
light
[into
my
eyes],
and
that
person
said,
Nothing
Again
Iwas furious. Iwassoangrywith thedoctorsandwastelling them (notusingmyusualvoice,
though)thatiftheywanttotalkaboutmelikeIamdead,theyshouldleavetheroomandconsult
outsidenotinfrontofme!!!IwasshoutingthatIcanhearthemandIamnotdead!!!
Otherhospitalpatientswhohaveclaimed suchawarenessduringanNDEseem tohave
been able to describe people, objects, and events around their body that they presumably
couldnthaveperceived iftheyhadflatlinedandtheirbrainactivitywasdecliningrapidlyorhad
stopped froma lackofblood flow.39
Onesuchaccountofawarenessbyapatientwascitedby
KennethRingandMadelaineLawrenceduringtheirearlystudiesofNDEsatHartfordHospital in
Connecticut:
In the late1970s,SueSaunderswasworkingatHartfordHospitalasarespiratory therapist.One
day,shewashelpingtoresuscitatea60ishmanintheemergencyroom,whoseelectrocardiogram
[i.e.,heartmonitor]hadgoneflat.Medicswereshockinghimrepeatedlywithnoresults.Saunders
wastryingtogivehimoxygen.Inthemiddleoftheresuscitation,someoneelsetookoverforher
andsheleft.
Acoupleofdayslater,sheencounteredthispatient intheICU.Hespontaneouslycommented,
Youlookedsomuchbetterinyouryellowtop.
Shewassoshockedatthisremarkthatshegotgoosebumps,forshehadbeenwearingayellow
smockthepreviousday.
Yeah,themancontinued,Isawyou.Youhadsomethingoveryourfaceandyouwerepushing
airintome.AndIsawyouryellowsmock.
Saundersconfirmedthatshehadhadsomethingoverherfaceamaskandthatshehadworn
theyellow
smock
while
trying
to
give
him
oxygen,
while
he
was
unconscious
and
without
a
heartbeat.9,pp.227228,italicsinoriginal
InasmallnumberofNDEcases,thepatientwasapparentlyabletohaveanoutofbody
experience (OBE)andgoonestep furtherbyventuringbeyondtheroomwheretheirbodywas
located.DuringthatbriefOBEexcursion,thepatientwasabletoperceiveotherpeopleandevents
thatwere presumablyoutside the rangeof theirbodys sensorymotor system.5,cases8,9,&11
Such
casesbecomeparticularly interestingwhen thepeopleoreventswitnessedby thepatient are
later independently verified eitherby thepeopledirectly involved (i.e., they confirm that they
weredoingwhatthepatientsawthemdoingduringtheOBE),orbyothersnearbywhocanvouch
for the event.6,8
One such case is that of Peggy Raso,whichwasdocumented by the late Ian
Stevensonandhiscolleaguesat theUniversityofVirginiasDivisionofPerceptualStudies.5,case11
Duringherrecoveryfromanelectivesurgicalprocedure,Mrs.Rasosuddenlysufferedapulmonary
embolismonemorningandfellunconscious.Asmedicalpersonnelsoughttoreviveher,Mrs.Raso
reportedlyhadanNDE inwhichshewentoutofherbodyandobservedtheeventsoccurring in
andoutsideofherhospitalroomfromabove.PartoftheextensivepersonalaccountofherNDE
wentasfollows:
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IlookeddownatthebedfrommyvantagepointneartheceilingIsawagirltherewholookedto
beinagreatdealofpain.Hereyebrowsweredrawntogether,herlipswereblue,sheappearedto
haveabluemustache,therewasanoxygentubeinhernose,herhairwaswetlookingandstrung
outonthepillow.Ifeltsorryforher.Doctorsandnurseswerecomingandgoingfromtheroom.I
sawonedoctorhitherhardinthechest.IreallyfeltconfusedatwhatIwasseeingandhearing.The
nurses stationwas about fifty feet frommy room. I saw a doctor come to the station that I
recognized.He
was
afamily
friend
and
Ihad
been
raised
next
door
to
him.
The
nurse
told
him
that
PeggyAdams[Mrs.Rasosmaidenname]hadjustdied.HerepliedthathewouldcallMargaret(my
mother). My hearing was extremely acute. I heard and saw another patient on the floor
complainingabouttheactivityandnoisecomingfrommyroom.
Itdawnedonme theywere talkingaboutme. I tried to tell them Iwasnotdown there. It
becameobvioustheywerenothearingme. Irecognizedanothernurse fromanother floorcome
intotheroom.Iknewherthoughts.ShehadheardfromthehospitalgrapevinethatIhaddiedand
wantedtosee.She leanedonthe footofthebedandsaid,Toobad,andshewasonlytwenty
five.Shelefttheroomshakingherheadnegativelyandsaidtosomeoneinthehall,Imsosorry.
Iwasawareofapriestbeing intheroomandfrommyvantagepointIwatchedhim leave.Ashe
enteredthehall,Iheardhimsay,Iwillprayforhersoul.Isawmyhusbandsoftlycryinginthehall.
Hesaid,WhatcanItellthechildren?Myaunt,anRN,answeredhimwith,Godjustwantedher.
Ifeltsorryforthem.
Myattention
was
called
back
to
the
hall
by
my
aunts
voice.
Isaw
her
sitting
in
asquatting
positionleaningagainstthewallandtalkingtoanothernursewhowasonduty.Shesaid,Shewas
suchagoodlittlemother.IknewshewastalkingaboutmeandIthought,Iamstillagoodlittle
mother.HerwordsstartledmeintorealizingIwasdead.IlookedatthebodyagainandIknewit
wasmine. Itriedsohardtotellthem Iwasntthereanymoreand Iwasnt inpain. Iwishedthey
couldallbeuptherewithme.5,p.393
Lateron,Mrs.Rasoshusbandverifiedthatheraunt,whodidworkasanRNatthesamehospital,
hadsaid,Shewassuchagoodlittlemother,andherememberedthathehadsaidtoher,Ido
notknowwhatIwilldonow.Ihavethreechildrentotakecareofnow.Hedidnotbelievethathis
wifecouldhaveseenhimfromhispositionthroughthedoorway,anddidnotthinkshecouldhave
heardhim
crying
or
what
he
and
her
aunt
were
saying.
InafewNDEcases involvingOBE,thepatientswereapparentlyabletoperceiveobjects
locatedinanareabeyondthesensoryreachoftheirbody,whichwaslatercheckedandverified.
OnesuchcasewasthatdescribedbynurseKathyMilne,whichwascitedbyRingandLawrence.9
Milnepersonallyrecountedthecaseasfollows,whichshereceivedfromawomanwhohadhad
anNDEwhilebeingresuscitated:
[Thepatient]toldmehowshefloatedupoverherbody,viewedtheresuscitationeffortforashort
timeand then feltherselfbeingpulledupthroughseveral floorsof thehospital.Shethen found
herselfabovetheroofandrealizedshewaslookingattheskylineofHartford.Shemarvelledathow
interestingthisviewwasandoutofthecornerofhereyeshesawaredobject.Itturnedouttobea
shoe.[S]he
thought
about
the
shoeand
suddenly,
she
felt
sucked
up
a
blackened
hole.
The
rest
ofherNDEwasfairlytypical,asIremember.
Iwasrelatingthistoa[skeptical]residentwhoinamockingmannerleft.Apparently,hegota
janitortogethimontotheroof.WhenIsawhim laterthatday,hehadaredshoeandbecamea
believer,too.9,pp.226227
Collectivelylookedatinretrospect,NDEcasesinvolvingpatientawarenesswouldseemto
offeranargumentagainstthelongheldassumptionthathumanconsciousexperienceissolelythe
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result of complex physiological processes occurring in the brain. If some NDE patients are
apparently able to perceive and accurately recall events at timeswhen their brain function is
either declining or gone, then thismay be suggestive of some aspect of conscious awareness
extendingbeyondthebrain,whichsomemightinterpretasbeingsuggestiveofsurvival.Thisraises
the question: Can NDEs of this type possibly shed some light on the nature of conscious
experience?
SuchaquestionwasposedbyphysicianSamParnia inanarticlepublished inthejournal
Medical Hypotheses in 2007, in light of the results from four separate survey studies that
examinedNDEs inhospitalpatientswhohadsurvivedcardiacarrest.10
Parniawasacoauthorof
thefirststudy,whichlookedatNDEsamongcardiacsurvivorsadmittedtoSouthamptonGeneral
Hospital in theUKover aoneyearperiod.11
Of the63 survivors, 11.1% claimed tohavebeen
aware of themoment that they had been unconscious,with themajority of them describing
features characteristic of NDEs. Apart from the amount of oxygen they received during their
cardiac episode, these surviving patients did not significantly differ in vital signs or medical
conditionfromcardiacpatientswhodidnotreportanNDE.
Appearing in the prominent medical journal The Lancet, the second study by Dutch
cardiologistPimvanLommelandcolleagueshadsurveyed344cardiacarrestpatients from ten
hospitalsintheNetherlandsintheyearsbetween1988and1992.12
Eighteenpercenthadreported
anNDE,theoccurrenceofwhichwassignificantlymorecommonforyoungerpatients(under60
years of age) than for older patients. Similar to the first study, NDE patients did not differ
medicallyfromnonNDEpatientsintermsofthetypeofcardiactreatmenttheyreceived,suchas
medication,assistedbreathing,CPR,anddefibrillation(i.e.,electricshockoftheheart).
PsychiatristBruceGreysonoftheUniversityofVirginiasDivisionofPerceptualStudieshad
reported the third study,which looked at 1,595patients admitted to theUniversityHospitals
cardiac careunitover twoandahalfyears.13
About7%of thesepatientshad sufferedcardiac
arrest,andofthese,10% reportedanNDE. Incontrast,only1%ofpatientswithotherkindsof
cardiacproblems
reported
an
NDE.
Greyson
also
found
that
NDEs
were
significantly
common
amongyoungerpatients,andNDEpatientswere significantlymore likely tohavehadprevious
paranormal experiences. They also did not differ from nonNDE patients in terms of medical
condition/diagnosis,socialstatus,andotherdemographics.
ThefourthstudywasconductedbyresearchnurseJanetSchwaningerandhercolleagues
at the BarnesJewish Hospital of the Washington University School of Medicine in St. Louis,
Missouri.14
Allpatientswho suffered cardiacarrestat thehospital fromApril1991 toFebruary
1994were identified,andofthe30patientswhowereabletobe interviewed,23%hadhadan
NDE.
Collectively,thesefourstudiessuggestthatNDEsoccurinlessthanaquarter(1023%)of
cardiac
patients,
that
patients
who
have
NDEs
tend
to
be
younger,
and
that
there
isnt
anything
thatmedicallyorsociallydistinguishesacardiacpatienthavinganNDEfromothercardiacpatients
whodonthaveone.
Parnia argues that NDE cases which seem to involve patient awareness and OBElike
aspectsconstituteaproblemforscienceandmedicinethatshouldbestudiedfurtherinorderto
exploretheimplicationsthesecasesmayhaveforconsciousness.10
Thisargumentmaybefurther
supplementedbyfindingsfromotherstudieswhichsuggestthatsuchNDEcasesmaynotbeeasily
explainedaway.Forinstance,inanotherstudypublishedinTheLancet,theUniversityofVirginia
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researchersfoundthatpatientswhowereclosetodeath(asdeterminedbytheirmedicalrecords)
were significantly more likely to report enhanced mental functioning during their NDE than
patientswhowerenotclosetodeath(butmayhavethoughttheywere).15
Anupdatetheylater
made to thisstudyobtained similar results, inaddition to finding thatof the130patientswho
weredeterminedtobeclosetodeath,92%reportednormalorenhancedmentalabilityduring
theirNDE.
6
Such
findings
again
suggest
the
possibility
of
continuing
mental
awareness
in
NDE
patientsatatimewhentheirbrainfunctioningispresumedtobedecreasingorgone.
However,itisimportanttoconsiderthepossibilitythatatleastsomeinstancesofpatient
awareness during an NDE could still be due to patients subtly gaining information through
conventionalmeans,inspiteofappearingtobefullyunconsciousordeadatthetime.Thiswould
mainlyapplytocasesinwhichpatientswereabletodescribeeventsoccurringincloseproximity
totheirbody(e.g.,eventsoccurring inthesameroom),wheretheycouldhavepossiblyseenor
overheardsomeof theeventsgoingonaround themwhile remaining semiconscious.Casesof
peoplestillbeingabletohearsoundswhileunderanesthesiahavebeendocumented16,butthey
tendtobesomewhatrare.Thispossibilitymightfurtherbecounteredbyfindingswhichsuggest
thatdecreasedbloodflowtothebrain(whichcouldoccurduringcardiacarrest)isassociatedwith
adeteriorationofsustainableattention17,whichwouldreducethelikelihoodofsustainingsensory
functionandthusargueagainstordinarysenseperceptionasasourceforpatientawareness.
Some proposed physiological mechanisms for NDE18, such as hypoxia and anoxia (i.e.,
decreasedorinsufficientamountsofoxygeninvitaltissue)inthebrain,couldbeappliedtocardiac
arrestcaseswhenconsideringthelikelihoodofreducedbloodflowtothebrainasaresultofthe
arrest. Episodesofhypoxia and anoxiahavebeen known toproduce experiences of euphoria,
tunnellike imagery, and floating sensations, which might account for the presence of these
featuresinsomeNDEs.However,thesemechanismsdonotseemtobeadequateforexplainingall
cardiacarrestNDEsontheirown,becauseasvanLommelandhiscolleaguespointout12,ifhypoxia
andanoxiawere thecauseof theNDEs, thenwemightexpectnearlyallpatientswho suffera
cardiacarrest
to
also
report
an
NDE,
which
is
clearly
not
the
case
from
the
numbers.
ResearcherJustineOwenshasalsoarguedthatcertainpsychologicalaspects,suchasthe
patientsownpersonal expectations,might factor into their accountofwhathappenedduring
theirNDE.8Shegivestheillustrativeexampleofamedicalemergencyscript,amentalconstruct
comprisedofanumberofimaginativeelementsthatwemighttypicallyassociatewithamedical
emergency situation. For instance,wemight expect a lotofmedicalpersonnelwillbe rushing
aboutandgatheringaroundapatientsbodyduringtheemergency,usingcertaininstrumentsto
try and revivehimorher (e.g., adefibrillator to shock theheart). This typical, common sense
imageofamedicalemergencymightslipintoapatientsaccountandinfluenceanythingtheymay
haveseenorheardwhilesemiconscious,andtherebyproducesomefalsehitsonwhatoccurred
during
the
NDE.
Yet
it
is
important
to
realize
that
such
a
script
cannot
easily
account
for
NDE
cases
inwhichthepatienthasanOBEandisabletoventurebeyondtheirroomandperceivepeopleand
eventsinotherrooms,asexemplifiedbythecaseofPeggyRaso(discussedabove).
OnevaluablethingtonoteaboutNDEcases likePeggyRasos isthattheeventsthatthe
patientwitnesseswhile being outof theirbodyhave thepotential tobe verified for accuracy
throughotherpeopleordocumentation,andforthatreason,Parniaarguesthatsuchcasesmight
be amenable to some levelofquasiexperimental study.10
He suggests thatexperimental trials
couldbesetup insomehospitalswherehiddenvisual targetsarestrategicallyplaced incritical
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careandemergencyrooms, inpositionsandatheightsthatonlyaperson lookingdownattheir
bodyfromtheceilingmightseethem(e.g.,byplacingarandomlyselectedpictureflatonashelf
suspended from the ceiling).Parniamade apreliminary attempt todo thisduringhis studyof
cardiacpatientsatSouthamptonGeneralHospital,althoughnoneoftheNDEpatientsinhisstudy
reportedhavinganOBE.11
Parniais
apparently
not
the
first
to
propose
experimental
trials
of
this
type;
Janice
Miner
HoldenoftheUniversityofNorthTexashadmadesuchaproposalnearlytwodecadesbefore.19
However,practicalissuesanddifficultyinfindinghospitalswillingandopenenoughtohostsuch
trialshadmadeherownpreliminaryattempttoconductthemchallenging,withnoreportsofan
NDE.20
Morerecently,incollaborationwiththeUniversityofVirginiaresearchers,Holdenhasbeen
able to conduct additional trials during brief moments of
controlledcardiacarrestthatarepurposelyinducedaspart
of the surgical implantation of small defibrillatortype
devices insomecardiacpatients.Butagain,noneofthe52
patientswho received thesurgery reportedanNDEduring
their brief cardiac arrest, possibly due to the amnesia
brought on by the sedative medication they were given
and/ortoreassurancesthattheywouldnotbeindangerof
dyingduringtheprocedure.21
In addition to the relatively small number ofNDEs
thatoccuramongcardiacpatients(basedontheestimateof
1023%,asmentionedabove),oneotherchallengethatmaybefacedinsuchexperimentaltrials
isthattherateofsuccessintestingOBEperceptionsduringanNDEissomewhatupintheair.A
reviewof studies inwhichOBEperceptionswereexperimentally testedgenerally indicates that
theevidence for suchperceptions tends tobe ratherweak,with someOBEparticipantsbeing
successful,whileothersarenot.22
Asone case inpoint,CharlesTart conducted six classicOBE
studieswith
two
participants:
awoman
known
as
Miss
Z.,
and
famed
OBE
experient
Robert
Monroe.23
Inasuccessfultrial,MissZ.wasapparentlyabletoseeafivedigitnumberwrittenona
piece of paper lying on a shelf high up near the ceiling, several feet above the bed shewas
sleepingon.MissZ.hadpreviouslyreportedhavingfrequentOBEsinwhichshesawherbodyfrom
apositionneartheceiling,andthistrialhadbeenatestofherperception fromthatposition.24
However,Tarthad lesssuccesswithMonroe,who, inspiteofhavingveryvividOBEs,wasnever
abletocorrectlyseethenumberduringhistrials.
OBE studies previously conducted by the Psychical Research Foundation in the 1970s
furtherillustratethechallengeintestingOBEperceptions.25
Inthosestudies,OBEparticipantKeith
Harary (then a PRF research associate and graduate student at Duke University, who was
commonly
known
by
his
nickname
Blue)
often
reported
vivid
OBEs
in
which
he
felt
that
he
had
traveled toother rooms,buthisattempts toperceive targetobjectsand letters in thoseother
roomswereoftenerroneous.
Lastly,itmightbesomewhatdifficulttogeneralizeanyfindingsthatmayresultfromtest
trials given that the number ofNDEs in cardiac arrests is so relatively small. In otherwords,
whatevertheresultsmaypossiblytellusabouttheconsciousexperienceofthepatientshaving
suchNDEs, itmaybedifficulttogeneralizetheresultstotheconsciousexperienceofallpeople
given the small numbers of patients. However, this should not take away from the potential
15
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THETHETAASSOCIATIONNEWSLETTERSPRING2014
benefitsofconductingsuchtrials,anditisstillanopenquestionastowhetherornotadditional
trialswillbecarriedoutinthefuture.
Acknowledgments
Mythanks
to
Mrs.
Lucyna
Ellis,
who
kindly
wrote
up
the
accounts
of
her
two
NDEs
and
made
them
available
forthisarticle.
References&Notes
1Moody,R.A. (1975).LifeAfterLife:The InvestigationofaPhenomenonSurvivalofBodilyDeath.Covington,GA:
MockingbirdBooks.2Ring,K. (1979). Further studiesof theneardeathexperience.Theta,7(2),13;Ring,K. (1980). LifeatDeath:A
ScientificInvestigationoftheNearDeathExperience.NewYork:Coward,McCann,&Geoghegan.3Sabom,M.B.,&Kreutziger,S.A.(1978).Physiciansevaluatetheneardeathexperience.Theta,6(4),16.4Holden, J.M. (1988).Visualperceptionduring thenaturalisticneardeathoutofbodyexperience.JournalofNear
DeathStudies,7,107120.5
Cook,E.
W.,
Greyson,
B.,
&
Stevenson,
I.(1998).
Do
any
near
death
experiences
provide
evidence
for
the
survival
of
human personality after death? Relevant features and illustrative case reports. Journal of Scientific
Exploration,12,377406.6Kelly,E.W.,Greyson,B.,&Stevenson, I. (19992000).Canexperiencesneardeath furnishevidenceof lifeafter
death?Omega:JournalofDeath&Dying,40,513519.7Lawrence,M.M.(1995).Paranormalexperiencesofpreviouslyunconsciouspatients.InL.Coly&J.D.S.McMahon
(Eds.)Proceedingsofan InternationalConference:ParapsychologyandThanatology (pp.122148).New
York:ParapsychologyFoundation,Inc.8Owens,J.E.(1995).Paranormalreportsfromastudyofneardeathexperienceandacaseofanunusualneardeath
vision.InL.Coly&J.D.S.McMahon(Eds.)ProceedingsofanInternationalConference:Parapsychologyand
Thanatology(pp.149172).NewYork:ParapsychologyFoundation,Inc.9Ring,K.,&Lawrence,M.(1993).Furtherevidenceforveridicalperceptionduringneardeathexperiences.Journalof
NearDeathStudies,223229.10Parnia, S. (2007). Do reports of consciousness during cardiac arrest hold the key to discovering the nature of
consciousness?MedicalHypotheses,69,933937.11Parnia, S.,Waller,D.G., Yeates,R.,& Fenwick, P. (2001).A qualitative and quantitative studyof the incidence,
featuresandaetiologyofneardeathexperiencesincardiacarrestsurvivors.Resuscitation,48,149156.12vanLommel,P.,vanWees,R.,Meyers,V.,&Elfferich,I.(2001).Neardeathexperienceinsurvivorsofcardiacarrest:
AprospectivestudyintheNetherlands.Lancet,358,20392045.13Greyson, B. (2003). Incidence and correlates of neardeath experiences in a cardiac care unit. GeneralHospital
Psychiatry,25,269276.14Schwaninger, J., Eisenberg, P. R., Schechtman, K. B., Weiss, A. N. (2002). A prospective analysis of neardeath
experiencesincardiacarrestpatients.JournalofNearDeathStudies,20,215232.15Owens,J.E.,Cook,E.W.,&Stevenson,I.(1990).Featuresofneardeathexperienceinrelationtowhetherornot
patientswereneardeath.Lancet,336,11751177.16
Moerman,N.,
Bonke,
B.,
&
Oosting,
J.
(1993).
Awareness
and
recall
during
general
anesthesia.
Anesthesiology,
79,
454464.17Marshall, R. S., Lazar, R. M., & Spellman, J. P. (2001). Recovery of brain function during induced cerebral
hypoperfusion.Brain,124,12081217.18Fora reviewof theseandotherproposedmechanisms, seeGreyson,B. (1998).Biological aspectsofneardeath
experiences.PerspectivesinBiologyandMedicine,42,1432.19Holden,J.M.(1988).Rationaleandconsiderationsforproposedneardeathresearchinthehospitalsetting.Journal
ofNearDeathStudies,7,1931.
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20Holden,J.M.,&Joesten,L.(1990).Neardeathveridicalityresearch inthehospitalsetting:Problemsandpromise.
JournalofNearDeathStudies,9,4554.21Greyson,B.,Holden,J.M.,&Mounsey,J.P.(2006).Failuretoelicitneardeathexperiencesininducedcardiacarrest.
JournalofNearDeathStudies,25,8598.22Alvarado, C. S. (1982). ESP during outofbody experiences: A review of experimental studies. Journal of
Parapsychology,46,209230.23
Forareview
of
studies,
see
Tart,
C.
T.
(1998).
Six
studies
of
out
of
body
experiences.
Journal
of
Near
Death
Studies,
17,7399.24InadditiontoOBE,wemayalsohavetoconsiderESPonthepartofMissZ.inpossiblyaccountingforhersuccessin
recallingthenumber.25Roll, W. G., & Harary, B. (1976). Target responses during outofbody experiences [Abstract]. Journal of
Parapsychology,40,53;Morris,R. L.,Harary, S.B., Janis, J.,Hartwell, J.,& Roll,W.G. (1978). Studiesof
communicationduringoutofbodyexperiences.JournaloftheAmericanSocietyforPsychicalResearch,72,1
21.
17