Chapter 2

What Are Near-Death Experiences?

Before we can answer the critics, we need to understand what we are talking about. That sounds obvious, but it is actually one of the biggest problems in the debate over near-death experiences. Skeptics and believers alike sometimes talk past each other because they are not using the same definitions. They are not even looking at the same evidence. So before we go any further, we need to get our terms straight, understand what NDEs actually are, and—just as importantly—understand what this book is really about.

This chapter is the foundation for everything that follows. We will walk through the basic features of near-death experiences, look at how researchers identify and measure them, and draw some important distinctions that will matter throughout the rest of the book. Most importantly, we will introduce the concept of veridical NDEs—the subset of cases where people report things they should not have been able to know—because those cases are the real heart of our argument.

If you are brand new to the topic of NDEs, this chapter will give you everything you need to follow the rest of the book. If you have already read widely on the subject, stay with me anyway. Some of the distinctions we draw here—especially between ordinary NDEs and veridical NDEs, and between out-of-body experiences and near-death experiences—will be critical when we engage the skeptics in the chapters ahead.

A Strange Kind of Experience

Imagine this. A woman is rushed to the emergency room after a massive heart attack. Her heart stops. The monitors flatline. A medical team swarms around her, compressing her chest, injecting medications, charging the defibrillator. For several minutes, by every clinical measure we have, she is dead.

Then they bring her back.

And when she wakes up, she tells the nurse something remarkable. She describes watching the resuscitation from above—hovering near the ceiling, looking down at her own body on the table. She describes the specific instruments the doctors used. She recalls a conversation between two nurses in the hallway outside her room, a conversation she could not possibly have heard. She mentions that one of the doctors had a coffee stain on his left sleeve. When the medical team checks, every detail turns out to be accurate.¹

What just happened?

That is the question at the center of this book. And that is what we mean by a near-death experience—or at least the kind of near-death experience that matters most for the argument we are building.

The term “near-death experience” was coined in 1975 by Raymond Moody, a philosopher-turned-psychiatrist who collected accounts from people who had been clinically dead or very close to death and then revived.² Moody was not the first to notice these experiences. People have been reporting strange things at the boundary of death for as long as we have written records. The ancient Greeks told stories of soldiers returning from the battlefield with visions of the afterlife. Medieval Christian literature is full of accounts of people who briefly died, visited heaven or hell, and came back to tell the tale.³ But Moody was the first to give the phenomenon a name, study it systematically, and bring it to the public’s attention.

What Moody found—and what thousands of researchers have confirmed in the five decades since—is that people who come close to death often report a remarkably consistent set of experiences. Not everyone reports all of them. Not everyone reports them in the same order. But the pattern is striking, especially when you consider that these reports come from people of different ages, different cultures, different religions, and different medical conditions.

The Core Features of NDEs

So what do people actually experience? Let me walk you through the main elements, drawing on the research of Moody, Kenneth Ring, Bruce Greyson, Pim van Lommel, Jeffrey Long, and many others who have spent decades cataloguing these reports.⁴

First, many people report an overwhelming sense of peace and well-being. Pain vanishes. Fear dissolves. In its place comes a calm so deep that many experiencers later say it was the most peaceful moment of their entire lives. This is true even in cases involving violent trauma—car accidents, combat injuries, drownings. The peace arrives suddenly and completely, as if someone flipped a switch.⁵

Second, many people report a separation from the body. This is the out-of-body experience, or OBE, and it is one of the most striking features of NDEs. People describe floating above their bodies, often near the ceiling, and watching what is happening below. They see the medical team working on them. They see their own faces. They describe this not as a dream or a vague impression but as a vivid, clear, real experience—often described as “more real than real.”⁶ We will come back to this feature repeatedly in this book because it is the one that produces the strongest evidence against the skeptics’ case.

Third, people often report passing through a dark tunnel or void toward a brilliant light. The tunnel is one of the most commonly reported NDE elements, though not everyone experiences it. Some describe it as a passageway, others as a dark space, still others as moving rapidly through darkness toward something ahead. The movement is often accompanied by unusual sounds—buzzing, ringing, or a kind of music.⁷

Fourth, there is often an encounter with a brilliant, warm light. This is not the cold, harsh light of a hospital room. People describe it as a light that is alive, intelligent, loving. Many identify it as God, or as the presence of God. Others simply call it “the Light” and say that it radiated an unconditional love more powerful than anything they had ever experienced on earth. The light does not hurt their eyes. It draws them in.⁸

Fifth, many NDErs report meeting deceased relatives or other beings. They see grandparents, parents, siblings, friends—people who have already died. These encounters feel deeply real. The deceased relatives often communicate (sometimes without words, through a kind of direct knowing or telepathy) and may tell the experiencer that it is not their time, that they must go back.⁹ In some remarkable cases—and we will examine these carefully later in the book—people meet deceased relatives they did not even know had died. These are called “Peak in Darien” cases, and they are extraordinarily difficult for the skeptic to explain.¹⁰

Sixth, some people report a life review. They see their entire life flash before them—not in a vague, general way but in vivid, specific detail. Many say they did not merely watch the events of their lives; they re-experienced them, including the emotions of the people they had affected. They felt the pain they had caused others. They felt the joy they had given. This is not a pleasant or unpleasant experience by default—it is simply honest, complete, and profoundly moving.¹¹

Seventh, experiencers frequently describe encountering a boundary or barrier—a fence, a river, a line, a gate—beyond which, they understand, there is no return. Some are told they must go back. Others are given a choice. Nearly all of them say they did not want to return to their bodies. The experience on the other side was so beautiful, so peaceful, so full of love, that returning to the pain and limitation of physical existence felt like a kind of punishment.¹²

Eighth, people often report heightened senses. Colors are brighter than anything they have seen on earth. Sounds are clearer. Thinking is faster and more lucid. Many NDErs insist that their mental abilities were actually enhanced during the experience, not diminished. This is a crucial point. If the brain is shutting down, we would expect foggy, confused, fragmented experiences—the kind of thing you get when you are falling asleep or coming out of anesthesia. Instead, NDErs consistently report the exact opposite: crystal clarity, enhanced perception, and a sense that what they were experiencing was more real than everyday waking life.¹³

Jeffrey Long, a radiation oncologist who founded the Near Death Experience Research Foundation (NDERF) and has studied thousands of NDE accounts, identifies twelve common elements that appear repeatedly across his database. These include the eight I have described above, plus a sense of altered time or space, an encounter with otherworldly realms, the acquisition of special knowledge, and the return to the body—whether voluntary or involuntary.¹⁴ Not every NDE includes all twelve elements. Many include only a few. But the pattern is remarkably consistent, and it shows up across cultures, religions, age groups, and medical conditions.

The Moody Model—And Its Limitations

When Moody first published his findings in Life After Life in 1975, he presented a kind of composite NDE—a “model experience” that combined all the features he had heard into a single narrative. It went something like this: the person hears a buzzing sound, feels pulled through a dark tunnel, emerges into a bright light, meets deceased relatives, experiences a life review, encounters a boundary, and is told to go back.¹⁵

This model was enormously influential. It introduced millions of people to the concept of NDEs. But it also created a problem. Because Moody presented this idealized, all-in-one narrative, many readers came away with the impression that every NDE follows this exact script. And that is simply not the case.

Michael Marsh, the Oxford-trained medical doctor whose skeptical critique is the primary target of this book, is right to point out this problem. Marsh correctly notes that Moody’s “stylized account” of NDEs “lamentably fails to acknowledge the idiosyncratic content of each subject’s given narrative” and that it “has also spawned the prevalent view” that all near-death experiences follow a single script.¹⁶ On this point, I agree with Marsh entirely. The Moody model, taken as a rigid template, does not do justice to the variety and individuality of NDE reports.

Real NDEs are messy. Some people have only one or two of the core features. Others have many. Some skip the tunnel entirely and go straight to the light. Some never see deceased relatives. Some have no life review. Some experience the features in a different order than Moody described. Kenneth Ring found that only about half of his subjects had experiences that “conformed in an obvious way, at least in part, to Moody’s model,” and even among those, the depth and detail varied enormously.¹⁷ In Sabom’s prospective study, only about 22 percent of those who had NDEs saw some kind of light, and only 10 encountered another “person” or spiritual being.¹⁸

Marsh uses this variability as evidence against the reality of NDEs. If people were really visiting heaven, he argues, their reports should be identical: “Surely if all those people attesting to a specifically heavenly abode had actually resided there, their reports should be identical. They are not.”¹⁹ We will take on that argument directly in Chapter 22. For now, I simply want to acknowledge what Marsh gets right: the Moody model is a simplification, and it should not be treated as the standard by which all NDEs are measured.

But here is what Marsh gets wrong. The variability in NDE reports does not mean the experiences are not real. Think about it this way. If ten eyewitnesses describe a car accident, no two accounts will be identical. One person focuses on the sound of the impact. Another remembers the color of the car. A third recalls a specific bystander’s reaction. The details differ—but the core event is the same. A car crashed. That is exactly what we see with NDEs. The individual details vary, but the core features—the peace, the separation from the body, the light, the encounters, the boundary—keep showing up with a consistency that cannot be explained away by coincidence or cultural expectation alone.²⁰

How Do Researchers Measure NDEs? The Greyson Scale

One of the early problems in NDE research was that there was no agreed-upon way to determine whether someone had actually had a near-death experience or just a vivid dream or hallucination during a medical crisis. Moody’s descriptions were helpful, but they were qualitative—he was telling stories, not measuring data points.

That changed in 1983 when Bruce Greyson, a psychiatrist at the University of Virginia who has studied NDEs for over four decades, developed the Near-Death Experience Scale, now universally known as “the Greyson Scale.”²¹ This is a standardized questionnaire with sixteen items that measure the core features of NDEs. Each item is scored on a scale of 0 to 2, giving a maximum score of 32. A score of 7 or higher is generally accepted as indicating a genuine near-death experience, as opposed to a mere dream, hallucination, or confused recollection.

The Greyson Scale asks about specific features: Did time seem to speed up or slow down? Were your thoughts unusually vivid or clear? Did you feel separated from your body? Did you seem to enter some unearthly world? Did you encounter a deceased person? Did you see a brilliant light? Did you reach a point of no return?²²

This scale is important because it gives researchers a consistent, repeatable way to identify NDEs. Without it, the field would be stuck in a swamp of anecdotal accounts with no way to separate genuine NDEs from ordinary hallucinations or confused post-surgical memories. Jeffrey Long uses the Greyson Scale in his NDERF research, requiring a minimum score of 7 for an experience to be classified as an NDE in his database.²³ Parnia uses it in the AWARE studies. Van Lommel used it in his landmark Lancet study. The Greyson Scale is the gold standard in the field, and it has been validated across multiple studies and populations.

J. Steve Miller, in his accessible introduction to NDE evidence, notes that the Greyson Scale is useful not only for researchers but also for the general public trying to determine whether a given account is a genuine NDE or something else entirely. He points out that many of the most questionable NDE claims—the ones promoted on social media or in sensationalist books—would fail to score above 7 on the Greyson Scale because they lack the core features that characterize authentic NDEs. The scale thus serves as a built-in quality filter, helping to separate the evidentially significant cases from the noise.⁶⁵

Sam Parnia and his colleagues have also published guidelines and standards for NDE research that emphasize the importance of using validated tools like the Greyson Scale to classify experiences. Their guidelines stress that the term “NDE” should be reserved for experiences that meet specific criteria—not applied loosely to any unusual experience that occurs near death. This kind of methodological rigor is exactly what distinguishes serious NDE research from the popular “heaven tourism” genre, and it is a point we will return to in Chapter 30.⁶⁶

Why does this matter for our argument? Because when skeptics dismiss NDEs as “just hallucinations” or “just dreams,” they are often ignoring the fact that researchers have a well-validated tool for distinguishing NDEs from those things. An experience that scores 7 or higher on the Greyson Scale is qualitatively different from a drug-induced hallucination or a confused post-operative memory. The scale itself does not prove that NDEs are real encounters with another realm of existence—but it does establish that they are a distinct, identifiable category of experience with consistent features that set them apart from ordinary altered states of consciousness.

Out-of-Body Experiences vs. Near-Death Experiences

There is an important distinction that many popular treatments of NDEs blur, and we need to get it straight right from the beginning. An out-of-body experience (OBE) and a near-death experience (NDE) are not the same thing.

An OBE is the experience of perceiving the world from a location outside your physical body. You feel like you are floating above yourself, or standing across the room looking at your own body. OBEs can happen in many different contexts—during sleep, meditation, extreme stress, epileptic seizures, under anesthesia, or even spontaneously in healthy people going about their daily lives. Surveys suggest that somewhere between 10 and 25 percent of the general population has had at least one OBE at some point in their lives.²⁴

An NDE, on the other hand, is a broader experience that may include an OBE but also includes other features—the tunnel, the light, deceased relatives, the life review, and so on. And crucially, an NDE occurs in the context of actually being near death: cardiac arrest, severe trauma, drowning, or some other life-threatening crisis.

Marsh is quite clear about this distinction, and he is right to insist on it. In his introduction, he notes that “out-of-body (OB) and near-death (ND) experiences, despite conflation by experients and authors, stand as separate phenomena.”²⁵ He prefers to group both under his own umbrella term, “extra-corporeal experiences” (ECE), which he uses throughout his book to refer to any experience in which a person seems to perceive from outside their body, whether or not they were actually near death.²⁶

I appreciate Marsh’s instinct to be precise, but I find his ECE terminology more confusing than helpful. The entire field of NDE research uses the terms “OBE” and “NDE,” and readers coming to this topic for the first time will find those terms everywhere in the literature. So throughout this book, I will use the standard terminology: OBE for out-of-body experiences, NDE for near-death experiences, and I will be careful to specify when I mean one, the other, or both.

Why does the distinction matter? Because the strongest evidence for consciousness existing apart from the body comes from cases where OBEs happen during NDEs—specifically, during cardiac arrest or other conditions when the brain is not functioning. If someone has an OBE while falling asleep in bed, the skeptic can reasonably say, “Your brain was doing something weird.” Fair enough. But if someone has an OBE during a cardiac arrest—when the brain has shut down, when the EEG (the machine that measures electrical activity in the brain) shows a flat line—and that person comes back with accurate, verifiable information about what happened while they were “dead,” the skeptic has a much harder time explaining that away.²⁷

The OBE component of the NDE is where the evidential rubber meets the road. It is the feature that produces veridical perceptions—objectively verifiable observations that the experiencer could not have obtained through normal sensory channels. And that brings us to the most important concept in this entire book.

Veridical NDEs: The Evidential Core

Here is where we need to be very precise, because this is the foundation of everything that follows.

Not all NDEs are created equal—at least not from an evidential standpoint. Many NDEs are deeply meaningful personal experiences. They transform people’s lives. They take away the fear of death. They inspire people to live more compassionately. I do not doubt the reality or the significance of those experiences, and we will discuss their transformative power later in the book (Chapter 29). But from the standpoint of evidence—from the standpoint of answering the skeptic who says, “Prove to me that consciousness can exist apart from the body”—the most important NDEs are the ones that include veridical perceptions.

A veridical perception is one that can be independently verified as accurate. It is not a feeling, not an impression, not a subjective sense that “something happened.” It is a specific, concrete claim about the physical world that can be checked against reality. Did the patient correctly describe the instruments used during her surgery? Did the man accurately report what his wife said in the waiting room three floors away? Did the child describe meeting a deceased relative she had never been told about?²⁸

This is what separates NDE research from wishful thinking. You can argue about whether a feeling of peace or an encounter with a being of light is “really real” or just a brain state. Those are legitimate philosophical questions. But when a patient who was flatlined on an operating table comes back and accurately describes events that were happening in a different room—events confirmed by independent witnesses—you are no longer dealing with subjective impressions. You are dealing with data. Verifiable, testable, objective data.

Janice Miner Holden, a past president of the International Association for Near-Death Studies (IANDS) and a professor at the University of North Texas, has done the most systematic work cataloguing these cases. In 2009, she published a comprehensive review of every reported case of apparently veridical perception during an NDE that she could find in the published literature going back to 1975. She identified 107 such cases from thirty-nine different publications by thirty-seven different authors or research teams.²⁹

Here is the number that should make every skeptic sit up and pay attention. Using the strictest possible criterion—classifying a case as “inaccurate” if even one detail did not match reality—Holden found that only 8 percent of veridical NDE reports contained any inaccuracy at all. Meanwhile, 37 percent of cases were confirmed as completely accurate by independent, objective sources.³⁰

Think about that for a moment. If NDEs are hallucinations produced by a dying brain, we would expect the brain’s “guesses” about the external world to be wrong most of the time. Hallucinating brains do not produce accurate, detailed reports of real events happening in real locations. But that is exactly what we see in veridical NDE cases—an accuracy rate that far exceeds anything we would expect from chance, fantasy, or neurological malfunction.

As Holden herself notes, it is bizarre that a supposedly hallucinatory phenomenon would produce only 8 percent of cases with any error and 37 percent with objectively verified accuracy.³¹ Chris Carter, in his comprehensive defense of NDE evidence, highlights Holden’s work as the definitive response to skeptics like Susan Blackmore, who had previously argued that there were no properly corroborated veridical NDE cases.³² Blackmore’s critique may have been understandable in the early days of NDE research, when documentation was sparse. It is no longer tenable in light of the evidence Holden compiled.

Titus Rivas, Anny Dirven, and Rudolf Smit took this work even further in their landmark book The Self Does Not Die: Verified Paranormal Phenomena from Near-Death Experiences, which catalogues over 100 cases of verified paranormal perceptions during NDEs, organized by type and strength of evidence.³³ We will draw on their case collection extensively in the chapters ahead, especially in Chapter 4 where we present the strongest veridical cases in detail. Their work represents the single most comprehensive collection of verified NDE evidence available, and it is an indispensable resource for anyone who wants to evaluate the evidence honestly.

Penny Sartori, a nurse who conducted a five-year prospective study of NDEs in a Welsh hospital, tested the skeptical “good guessing” hypothesis directly. She asked cardiac arrest patients who did not report NDEs to try to guess what had happened during their resuscitation. Twenty-eight of these patients could not even attempt a guess. The few who tried described scenarios based on hospital dramas they had seen on television—and they got the details wrong. They guessed that the defibrillator had been used when it had not. They described incorrect procedures and wrong equipment. Their guesses, in short, were terrible. This contrasted starkly with the surprisingly accurate accounts given by patients who claimed to have been out of their bodies watching the emergency unfold.³⁴

Michael Sabom, the cardiologist who started out deeply skeptical of NDEs, was similarly struck by the accuracy of his patients’ reports. He noted that each resuscitation differs in significant ways—the drugs used, the order of procedures, the specific instruments employed, the personnel involved. These are not things you can guess at from watching television. Yet his NDE patients consistently got the details right.³⁵

NDEs Are Not Hallucinations, Dreams, or Delusions

One of the most common reactions people have when they first hear about NDEs is to say, “That sounds like a hallucination.” Or a dream. Or a delusion caused by drugs, oxygen deprivation, or a brain in crisis. We will deal with each of those specific claims in detail later in the book—the dying brain hypothesis in Chapter 10, oxygen deprivation in Chapter 11, temporal lobe activity in Chapter 12, dreams in Chapter 15, and ketamine in Chapter 16. But even at this early stage, it is worth noting why researchers who have actually studied NDEs in depth consistently reject those comparisons.

Hallucinations are typically fragmentary, confused, and bizarre. They jump from scene to scene without logic. The person experiencing a hallucination usually recognizes afterward (and sometimes even during the experience) that it was not real. Hallucinations fade quickly from memory, just like dreams. And hallucinations do not produce accurate, verifiable information about the physical world.⁵³

NDEs are the opposite in almost every respect. They are structured, coherent, and logical. They follow a recognizable pattern. Experiencers consistently describe them as “more real than real”—not less real, as dreams and hallucinations are. NDE memories do not fade over time; research by Bruce Greyson has shown that NDE memories remain remarkably stable over decades, unlike ordinary memories or confabulated memories, which degrade and change over the years.⁵⁴ And, as we have seen, NDEs sometimes produce veridical perceptions—accurate information about the real world that can be independently verified.

Marie Thonnard and her colleagues at the University of Liège in Belgium conducted a rigorous study comparing NDE memories to memories of both real events and imagined events. Their finding was striking: NDE memories contained more characteristics of real memories than actual real-event memories did. In other words, by the standard measures psychologists use to distinguish real memories from false ones, NDE memories scored even higher than memories of events that people knew had actually happened to them.⁵⁵ That is not what we would expect if NDEs were hallucinations or fantasies. Hallucinations and fantasies produce memories that look like imagined events, not like—or even more real than—genuine ones.

Jeffrey Long, drawing on his database of thousands of NDE accounts, has pointed out another important distinction. Many of his respondents had experienced both NDEs and drug-induced hallucinations or vivid dreams at various points in their lives. When asked to compare the experiences, they consistently described them as fundamentally different. The NDE was lucid, coherent, and hyper-real. The hallucination or dream was fragmentary, confused, and recognizably unreal. These people knew the difference. They had experienced both. And they were adamant that the NDE was not a hallucination.⁵⁶

Marsh is aware of this problem, and his response is to argue that NDErs are “not conversant with the numerous forms of dream-state modes now neurophysiologically defined.”⁵⁷ In other words, Marsh suggests that when NDErs say their experience was nothing like a dream, they simply do not know enough about dreams to make that judgment. That is a patronizing argument, and it does not hold up. You do not need to be a neurophysiologist to know the difference between a dream and a waking experience. Every human being makes that distinction every single day, effortlessly and without formal training. We wake up and instantly recognize that what we were just experiencing was a dream, not reality. NDErs who have also had hallucinations or lucid dreams are especially well positioned to compare the two types of experience, precisely because they have firsthand knowledge of both. When they say the NDE was nothing like a dream, they deserve to be taken seriously—not dismissed as people who lack the proper neurological vocabulary.

The distinction between NDEs and hallucinations also matters for a deeper reason. Hallucinations are, by definition, brain-generated. If NDEs were merely a type of hallucination, there would be no need to invoke anything beyond brain chemistry to explain them. But the veridical cases show us something that hallucinations cannot explain: accurate perception of real events happening in the physical world, sometimes at a distance from the patient’s body, during periods when the brain was not functioning. A hallucination cannot tell you what your surgeon said to the nurse in the hallway. A hallucination cannot describe the pattern on the scrubs of a doctor you have never met. Only real perception can do that.

The Negative Cases: Distressing NDEs

Before we move on, we should acknowledge that not all NDEs are pleasant. A minority of experiencers—estimates range from about 1 to 20 percent, depending on the study—report frightening, distressing, or hellish experiences. These may involve feelings of existential terror, encounters with hostile entities, a sense of falling into darkness or a void, or even scenes that the experiencer interprets as hell.⁵⁸

Marsh discusses these cases briefly in his first chapter, citing accounts from Maurice Rawlings’s research and noting the Fenwicks’ discussion of hellish experiences.⁵⁹ The existence of distressing NDEs is sometimes used as an argument against the “wishful thinking” explanation—if NDEs were merely the brain projecting a comforting fantasy, why would anyone have a terrifying one? It is also sometimes used as an argument for the reality of NDEs—if there really is a spiritual realm, we might expect it to contain both positive and negative dimensions, just as Scripture describes both the comfort of God’s presence and the reality of judgment.

For our purposes, the distressing NDE cases are relevant in two ways. First, they demonstrate that NDEs are not simply a product of the experiencer’s expectations. If your brain were generating a comforting hallucination during a medical crisis, it would not generate an experience of being dragged into a hellish void. Second, some distressing NDEs also include veridical elements, which means that the same evidential framework we apply to positive NDEs—checking whether the experiencer’s perceptions match reality—can be applied to negative ones as well.⁶⁰

We will not spend a great deal of time on distressing NDEs in this book, since our primary focus is on the veridical evidence and its implications for the consciousness-brain relationship. But they are part of the full picture, and any honest treatment of NDEs must acknowledge them.

How Common Are NDEs?

One question that always comes up in discussions of NDEs is: how common are they? The answer depends on how you define the population you are looking at.

Among the general population, surveys suggest that roughly 4 to 5 percent of people report having had an NDE at some point in their lives. A 1982 Gallup Poll estimated that about 5 percent of the American adult population—roughly 8 million people at the time—had experienced something that met the basic criteria for an NDE.³⁶

Among people who actually come close to death, the numbers are much higher. Pim van Lommel’s landmark prospective study, published in The Lancet in 2001, found that 18 percent of cardiac arrest survivors in Dutch hospitals reported an NDE.³⁷ Sam Parnia, in the AWARE study, found a similar range. Kenneth Ring found that about 48 percent of his subjects who came close to death reported at least some NDE features, though only about half of those had experiences deep enough to match the full Moody model.³⁸ Sabom found that about 43 percent of his cardiac arrest patients reported some NDE features, with 33 percent reporting out-of-body experiences.³⁹

These numbers vary for several reasons. Different studies use different criteria for what counts as an NDE. Some patients may not remember their experience, or may be reluctant to report it for fear of being thought crazy. Some may experience an NDE but not report it to researchers because the study methodology does not ask the right questions at the right time. As Marsh notes, citing diverse prevalence data, the numbers seem to depend heavily on patient selection and methodology.⁴⁰

But here is the number that matters most for the skeptic’s case: in van Lommel’s study, 82 percent of cardiac arrest survivors did not report an NDE. This is actually a significant problem for the “dying brain” hypothesis, which is the most popular skeptical explanation. If NDEs are caused by the brain shutting down—by oxygen deprivation, the release of neurochemicals, or some other physiological mechanism of dying—then we should expect every dying brain to produce one. All 344 of van Lommel’s cardiac arrest patients experienced the same physiological crisis. Their brains all went through the same shutdown process. Yet only a minority reported NDEs. The dying brain hypothesis cannot explain this selectivity.⁴¹ We will return to this argument in detail in Chapter 10.

What Triggers an NDE?

NDEs occur in a wide variety of medical contexts. Cardiac arrest is the most commonly studied trigger, because it involves a clear and measurable cessation of brain function. But NDEs have also been reported during severe blood loss, anaphylactic shock, near-drowning, electrocution, combat injuries, severe infections, and complicated surgeries. They have been reported by people who nearly fell from great heights and by people who were in car accidents.⁴²

Marsh makes an interesting observation in his first chapter that is worth highlighting. He notes that some OBEs and NDE-like experiences occur in situations that are not immediately life-threatening—during extreme stress, physical exhaustion, or even in calm religious settings. He even notes cases of people who can induce OBEs at will.⁴³ This, Marsh argues, shows that an NDE does not require actual proximity to death—it just requires a brain in a disturbed state.

There is something to this point. OBEs clearly can occur outside of near-death situations. That is well established. But Marsh conflates two things that need to be kept separate. A spontaneous OBE that happens while you are falling asleep is one thing. An OBE that happens during cardiac arrest—when the brain shows no measurable electrical activity—and that includes veridical perceptions of events in the physical world, is a very different thing. The first can be explained, or at least plausibly accounted for, by unusual brain activity. The second cannot, precisely because there is no measurable brain activity to account for it.

This is why the distinction between ordinary OBEs and veridical NDEs during cardiac arrest is so important. Marsh sometimes treats them as if they were the same phenomenon, drawing conclusions about NDEs during cardiac arrest from data about OBEs in non-life-threatening situations. That is a category error, and it weakens his argument considerably.⁴⁴

Marsh’s “Extra-Corporeal Experience” Terminology

Before we move on, a word about Marsh’s preferred terminology, since his book is the primary skeptical text we are responding to throughout this project.

Marsh prefers not to use the standard terms “OBE” and “NDE.” Instead, he lumps everything together under his own term: “extra-corporeal experience,” or ECE.⁴⁵ He defines ECE broadly to include any experience in which a person seems to perceive from outside their body, regardless of the context—whether the person was actually near death, merely stressed, dreaming, meditating, or experiencing a neurological episode.

There is a strategic advantage to this move, and it is worth naming. By grouping all out-of-body experiences together under one label, Marsh can draw on data from the full range of OBE triggers—including ordinary sleep-related OBEs, OBEs induced by electrical brain stimulation, and OBEs associated with neurological conditions—and apply his conclusions to the NDE cases that are the most evidentially significant. In effect, his ECE terminology allows him to say, “We can explain OBEs through brain mechanisms,” without ever confronting the specific subset of cases that his explanations cannot touch: the veridical OBEs that occur during documented cardiac arrest.

I do not think Marsh does this dishonestly. He is a medical doctor trained in neurophysiology, and it is natural for him to look at all OBEs through a neurological lens. But the terminology flattens crucial distinctions that the evidence demands we maintain. Throughout this book, when I refer to Marsh’s arguments, I will translate his ECE language back into the standard NDE/OBE terminology for clarity, and I will be careful to note when his arguments about brain-based OBEs are being applied (I believe illegitimately) to veridical NDE cases during cardiac arrest.⁴⁶

What This Book Is—and What It Is Not

Now that we have the basic definitions and distinctions in place, I want to be very clear about what this book is arguing and what it is not.

This book is not about every NDE claim that has ever been made. It is not about the popular “heaven tourism” books that have dominated bestseller lists—books where someone claims to have visited heaven and come back with detailed reports about golden gates, streets of gold, and choirs of angels. Some of those books are well-documented. Others are poorly documented, sensationalized, or even fraudulent. The retraction of The Boy Who Came Back from Heaven by Alex Malarkey, who admitted the story was fabricated, is a cautionary tale.⁴⁷ We will address the “heaven tourism” critique in Chapter 30, but it is not what this book is about.

This book is also not asking you to believe that every person who claims to have had an NDE is telling the truth, or that every NDE report is equally reliable. Memory is fallible. People embellish stories over time. Some accounts may be influenced by what the experiencer read or heard after the fact. Marsh is right to urge caution on the reliability of NDE narratives, and we will engage his arguments about memory, confabulation, and narrative reliability in Chapter 18.⁴⁸

What this book is about is the hard evidence. It is about the subset of NDE reports that include veridical perceptions—specific, concrete, objectively verifiable claims about the physical world made by people who were clinically dead or deeply unconscious at the time. It is about cases where medical staff confirmed what the patient reported. It is about cases where researchers investigated the claims and found them accurate. It is about the accumulation of dozens, and now hundreds, of such cases—documented in peer-reviewed journals, prospective hospital studies, and careful scholarly compilations like The Self Does Not Die.

And it is about what that evidence means. If even a handful of these cases are genuine—if even one patient accurately perceived events while their brain showed no activity—then the implications are enormous. It would mean that consciousness can function apart from the brain. It would mean that the physicalist assumption underlying most of neuroscience—the assumption that the brain produces consciousness the way the liver produces bile—is wrong. It would mean that the human person is more than a body. It would mean that something survives death.

I want to underscore what makes veridical NDE evidence different from other kinds of evidence people cite for the afterlife. People have always believed in life after death based on religious faith, philosophical arguments, or personal intuition. Those sources of belief are legitimate and important. But veridical NDEs offer something none of those can: empirical, testable, falsifiable evidence. When a patient reports seeing a red shoe on a third-floor ledge outside the hospital during her cardiac arrest, and investigators go to that ledge and find the shoe, that is not faith. That is data. When a child describes meeting a person in “the other place” and that person turns out to be a deceased relative the child had never been told about, that is not philosophy. That is evidence of the kind that science can evaluate.⁶¹

This is why the NDE debate matters so much. It moves the question of consciousness surviving death out of the realm of pure speculation and into the realm of empirical investigation. The critics understand this, which is why they work so hard to explain the evidence away. If veridical NDEs are what they appear to be—genuine instances of consciousness perceiving the world without a functioning brain—then the entire physicalist framework that dominates modern neuroscience and philosophy of mind is in serious trouble.

That is the argument of this book. Not wishful thinking. Not religious special pleading. Evidence.

The Skeptics We Will Engage

As we introduced in Chapter 1, the primary skeptical voice we will be responding to throughout this book is Michael N. Marsh, a medical doctor with a D.Phil. from Oxford who published Out-of-Body and Near-Death Experiences: Brain-State Phenomena or Glimpses of Immortality? through Oxford University Press in 2010. Marsh brings genuine neurophysiological expertise to the table, and his book represents one of the most detailed skeptical treatments of NDEs from a medical perspective.⁴⁹

Marsh’s central thesis is stated clearly in his introduction: extra-corporeal experiences “are likely to be generated by metabolically disturbed brains especially during the period when they are regaining functional competence.”⁵⁰ In plainer English: NDEs are the product of brain malfunction. When your brain is shutting down or starting back up, it produces strange experiences—weird dreams, vivid hallucinations, distorted perceptions of body and space. NDEs, Marsh claims, are simply a sophisticated version of those brain malfunctions. Nothing supernatural is required.

The secondary skeptical voice is that of John Martin Fischer and Benjamin Mitchell-Yellin, two philosophers who published Near-Death Experiences: Understanding Visions of the Afterlife through Oxford University Press in 2016. Where Marsh approaches the question from neuroscience, Fischer and Mitchell-Yellin approach it from analytic philosophy. Their strategy is to argue that even the best NDE evidence does not require a supernatural explanation because, for every piece of NDE evidence, a natural (physical) explanation is always available, even if we do not yet know the details.⁵¹

We will also engage Susan Blackmore’s “dying brain” hypothesis, Keith Augustine’s arguments against NDEs as evidence for survival, Kevin Nelson’s REM-intrusion model, the critiques in Raymond Lawrence’s Blinded by the Light, and the concerns raised in Selling the Stairway to Heaven. Each of these critics brings something to the table, and each will get a fair hearing. But each of their arguments, when pressed against the strongest veridical NDE evidence, will be found wanting.

A Word About What We Are Not Claiming

I want to be honest about the limits of the argument we are building. NDEs do not prove that the soul exists. They do not prove that there is life after death. They do not prove that Christianity is true. Proof, in the strict sense, is a high bar—one that is rarely met outside of mathematics and formal logic.

What NDEs provide is evidence. Strong evidence. Cumulative evidence. Evidence that, taken together, points powerfully and consistently in one direction: consciousness can and does function apart from the physical brain. That is the claim. Not absolute proof, but significant empirical evidence—the kind of evidence that a reasonable person, evaluating it honestly, cannot simply wave away.

I approach this subject as both a scholar and a Christian. I believe the evidence from NDEs corroborates what the Bible already teaches: that human beings have an immaterial soul, that the soul survives the death of the body, and that there is a conscious existence between death and the final resurrection. But the primary argument of this book is not theological. It is empirical. I am going to let the data speak first and bring the theology in where it is relevant—especially in response to critics like Marsh who argue against substance dualism on theological grounds (Chapters 26–28).⁵²

For now, what matters is this: the evidence is there. It is extensive, carefully documented, and growing. The critics have done their best to explain it away. In the chapters that follow, we will examine their arguments one by one—the neurological objections, the philosophical objections, the methodological objections, the theological objections—and we will show, point by point, why they fail.

The veridical evidence from near-death experiences is the stubborn fact that will not go away. It is the rock on which every skeptical theory eventually breaks. And it is the foundation on which this entire book is built.

Why NDEs Matter for the Mind-Body Question

At its deepest level, the NDE debate is about one of the oldest and most important questions in all of philosophy: what is the relationship between the mind and the body? Are we just our brains—sophisticated biological machines whose consciousness is entirely a product of neural firing? Or is there something more to us—an immaterial dimension of personhood that can exist apart from the physical body?

This question is not merely academic. How you answer it shapes how you think about death, meaning, morality, and the nature of human beings. If consciousness is nothing but brain activity, then when the brain dies, you cease to exist. Full stop. There is no afterlife, no soul, no continuation of the person beyond biological death. If, on the other hand, consciousness can exist apart from the brain—as the veridical NDE evidence suggests—then death may not be the end. The person may continue. And the physicalist picture of human nature, however dominant it is in modern science and philosophy, may be fundamentally mistaken.⁶²

Philosophers call these two views “physicalism” (or “materialism”) and “substance dualism.” Physicalism says that everything about you—your thoughts, feelings, memories, personality, consciousness—is produced by your physical brain and body. There is nothing else. Substance dualism says that you are composed of two kinds of stuff: a material body and an immaterial soul (or mind). The soul is a real thing, not just a metaphor, and it can exist apart from the body.⁶³

I am a substance dualist. I believe that human beings have an immaterial soul that survives the death of the body. I believe this for theological reasons—Scripture teaches it, and we will examine the biblical evidence in Chapters 26 through 28. But I also believe it for empirical reasons, because the veridical evidence from NDEs provides exactly the kind of data we would expect if substance dualism were true and physicalism were false. If consciousness can function when the brain is flat-lined—when there is no measurable electrical activity in the cortex—then consciousness is not simply a product of the brain. Something else is going on. And the most straightforward explanation is that there is an immaterial dimension of the human person that can perceive, think, and remember apart from the physical brain.

Most of the skeptics we will engage in this book—Marsh, Fischer, Mitchell-Yellin, Blackmore, Augustine—are physicalists. That is not a criticism; it is simply a fact about their philosophical starting point. Their skepticism about NDEs is not just about the evidence; it is about what they believe is possible. If you start with the assumption that consciousness cannot exist apart from the brain, then no amount of NDE evidence will convince you, because you have ruled out the conclusion in advance. Our task in this book is not only to present the evidence but also to show that the physicalist assumption underlying NDE skepticism is itself open to serious challenge—both philosophically (Chapters 23–25) and theologically (Chapters 26–28).⁶⁴

Interestingly, Marsh himself acknowledges the difficulty of explaining consciousness in purely physical terms. In a rare moment of candor, he admits that “there is no explanation as to how, or why, consciousness should necessarily arise out of the rather more basic neural activities comprising brain metabolism.”⁶⁷ This is the “hard problem of consciousness” identified by philosopher David Chalmers—the problem of explaining why and how physical brain processes give rise to subjective, first-person experience. No one has solved this problem. No one is close to solving it. And if we cannot even explain how a functioning brain produces consciousness, we are in no position to declare with confidence that a non-functioning brain cannot be associated with consciousness.

The NDE evidence does not ask us to abandon science. It asks us to be open to the possibility that consciousness is more than what our current scientific models can explain. It asks us to follow the evidence wherever it leads—even if it leads us beyond the comfortable boundaries of physicalism. That is what this book is about. And that journey begins with the foundational understanding of NDEs we have built in this chapter.

Looking Ahead

In the next chapter, we will survey the history of NDE research—from Moody’s pioneering work in the 1970s through the latest results from Sam Parnia’s AWARE studies. We will meet the key researchers, understand their contributions, and see how the field has matured from anecdotal case collections into rigorous, prospective, hospital-based studies. We will also address Marsh’s charge that NDE researchers are biased—an important objection that deserves a thoughtful answer.

Then, in Part II, we will dive into the evidence itself. We will present the strongest veridical cases in detail (Chapter 4), revisit the famous Pam Reynolds case and respond to Marsh’s critique of it point by point (Chapter 5), examine NDEs in the blind (Chapter 6), children (Chapter 7), and across cultures (Chapter 8), and look at the corroborating evidence from deathbed visions, terminal lucidity, and shared death experiences (Chapter 9).

After that, we will take on the skeptics directly: the dying brain hypothesis (Chapter 10), chemical explanations (Chapter 11), the temporal lobe objection (Chapter 12), the TPJ argument (Chapter 13), the phantom limb analogy (Chapter 14), the dreaming objection (Chapter 15), ketamine (Chapter 16), and the timing problem (Chapter 17). Each of these arguments sounds compelling in isolation. None of them survives contact with the strongest NDE evidence.

Parts IV and V of the book address the methodological objections—memory, confabulation, researcher bias, cultural conditioning, the “vivid doesn’t mean veridical” argument—and the philosophical and theological objections, including the hard problem of consciousness, the case for substance dualism, the physicalist assumption, biblical anthropology, the false dichotomy between resurrection and the soul, and the compatibility of NDEs with Christian theology. These later chapters bring the argument full circle, showing that the evidence we present in the first half of the book not only withstands the skeptics’ challenges but actively supports a view of human nature that is consistent with both the best philosophical reasoning and the teaching of Scripture.

But all of that is ahead. For now, the foundations are in place. You know what NDEs are. You know how they are measured. You know the difference between an OBE and an NDE, and between an ordinary NDE and a veridical one. You know what Marsh and the other critics are claiming. And you know what this book is going to argue.

Here is what I want you to carry with you into the next chapter and beyond: the question of whether NDEs are real is not a matter of faith versus science. It is a matter of evidence. There is evidence on the table—hard, documented, peer-reviewed evidence—that people have perceived real events in the real world while their brains were not functioning. The skeptics have proposed explanations. Those explanations, as we will show, consistently fall short. They explain some features of some NDEs, but they cannot account for the full range of evidence, and they collapse entirely when confronted with the strongest veridical cases.

The evidence is stronger than the skeptics want you to believe. The critics have had their say. Now it is time to answer them.