The first out-of-body experience was during the crisis. Many survivors keep having them. Lucid dreaming becomes common. The boundary the body normally enforces between waking, dreaming, and being-elsewhere stays porous after the experience, in ways that the survivor learns to live with and that researchers have been documenting for forty years.
The initial OBE during the NDE is usually involuntary and is triggered by the medical event. After the survivor is back in the body and recovered, a substantial subset (Atwater's number is around 45 percent of adult experiencers, Ring's is similar) report that they continue to have OBEs spontaneously, without another medical crisis. The triggers vary: falling asleep, deep meditation, emotional surrender, sometimes nothing identifiable. The survivor is in bed, conscious, and then they are floating near the ceiling looking back at their body.
For most experiencers, this is initially disturbing and becomes manageable. They learn to recognize the onset, they learn to let it happen or to refuse it. Some come to use it deliberately, especially as a way back into the felt presence of the source (see Persistent Felt Presence of the Light). A smaller subset find it frightening enough that they avoid the conditions that trigger it.
"I do not seek them out. I do not need to. Once or twice a month, usually when I am about to fall asleep, the room shifts and I am above the bed. The first time it happened, three months after the hospital, I thought I was dying again. Now I know what it is. I look at my husband sleeping. I move through the house. I come back. The whole thing takes maybe ten minutes by the clock. The lived experience of it is longer." — experiencer interview, Atwater fieldwork, 2008
Lucid dreaming is more common than spontaneous OBE in the long-term-experiencer population, and the rate is significantly above the population baseline. Survey work by Ring and others has put NDE survivors at three to five times the rate of regular lucid dreaming compared to matched controls. The dreams are often described as having a distinct quality: hyper-clear, internally consistent, and containing the same texture of awareness the survivor had during the NDE. Many survivors describe meeting deceased relatives in these dreams in ways that feel categorically different from ordinary dream content.
The transition states into and out of sleep become unusually vivid. Survivors report seeing geometric patterns, hearing voices, sensing presences, and sometimes experiencing brief reentries into the NDE state. These are short, usually under a minute, and they recur. Sleep researchers studying NDE survivor populations have documented elevated rates of hypnagogic phenomena that exceed the baseline for general-population sleep disturbance.
Persistent dissociation as a trait. The standard psychiatric framing, articulated by Greyson himself in earlier work and refined since. The NDE involves a profound dissociative state, and that state, once accessed, becomes easier to re-enter. The objection is that "dissociation" is being asked to do a lot of work here. Clinical dissociation in trauma populations is usually associated with distress and functional impairment. NDE-survivor OBEs are more often associated with peace and integration.
Default-mode-network and sleep-stage architecture changes. The same network that is implicated in the time-perception shift on (see Altered Time Perception). OBE-like states have been induced in laboratory settings by stimulating the right temporoparietal junction (Blanke et al., 2002). The hypothesis is that long-term experiencers have a slightly altered baseline activity in this region. The hypothesis is plausible. It has not been directly tested in a long-term-experiencer population.
The survivor's account. Consciousness is not strictly produced by the brain, and the experience showed the survivor this directly. After the experience, the survivor has a more flexible relationship to the body-consciousness coupling. OBEs are not pathological, they are an accurate report of what consciousness can do when the coupling is less tight. The objection is unfalsifiability. The response is that veridical-perception studies (where the survivor reports details of the resuscitation room that they could not have seen from the bed) provide at least preliminary empirical support, and that Holden's 2009 review of the published veridical cases found a substantial subset that withstood scrutiny.
Long-term experiencers tend to develop a working relationship with these states. They learn what they can and cannot do during them. They learn not to talk about them with most colleagues. They sometimes find groups, often through IANDS, where the comparing of notes is treated as ordinary. The phenomena do not fade with time. At ten-, twenty-, and thirty-year follow-up, the rates remain elevated relative to the general population.