An out-of-body experience (OBE) is a perceptual phenomenon in which a person has a vivid sense of leaving their physical body and observing themselves from an external vantage point. People who report OBEs often describe seeing themselves from above, watching events around their body unfold as if from a position outside it.
OBEs are reported by a significant proportion of cardiac arrest survivors, often forming part of a broader near-death experience (NDE). NDEs may also include sensations of moving through a tunnel, seeing bright light, encountering deceased relatives, or having a life review. These experiences are typically vivid, emotionally intense, and profoundly meaningful to those who have them. They are often described as feeling more real than ordinary consciousness.
The neurological mechanisms behind OBEs are not fully understood. They have been associated with reduced oxygen supply to the brain, altered activity in the temporoparietal junction (a brain region involved in integrating bodily sensations and sense of self), and the presence of REM-intrusion states. Research programmes such as the AWARE (AWAreness during REsuscitation) study have investigated whether NDEs involve any form of consciousness or perception during cardiac arrest when the brain appears clinically inactive.
For cardiac arrest survivors, an OBE or NDE can be profoundly positive, bringing a sense of peace or changed perspective on life. However, the experiences can also be confusing or distressing, and integrating them with everyday life and with the medical experience of the arrest can be challenging. Not all healthcare professionals are familiar with NDEs, and survivors may feel reluctant to discuss them. Specialist NDE support organisations and peer communities exist for those wishing to explore these experiences. See also: Memory Issues, PTSD.
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