Meditation body dissolution
Also called: Self-boundary dissolution · Body boundary loss
During long, still meditation the brain loses track of the edges of the body. The body can feel indistinct or seem to expand into space. Flotation tanks produce the same effect. It is usually harmless.
How common
Does this happen to you?
How it works
Your brain keeps a running map of where every body part is. This is the body schema. It combines position sense, touch, and vision, and depends on parietal and premotor areas of the brain2. The main position sensors are muscle spindles, which report changes in muscle length1. When a muscle is held still, spindle firing slowly falls1. With the eyes closed, vision is gone too.
Sit still long enough and the body can grow indistinct, or drop out of awareness8. Some meditators feel the whole body expand into the space around it8.
The same effect can be forced in a laboratory. In the Pinocchio illusion, vibrating the biceps tendon makes the forearm feel as if it is moving away from the face, so with a finger on the nose the nose seems to grow1. The rubber hand illusion rewrites the map by matching sight and touch3. Meditation removes inputs instead of adding false ones.
Researchers at the University of Haifa call this self-boundary dissolution7. In a 2024 brain-scan study of 46 long-term meditators, loss of the body’s edges went with a drop in high-beta brain waves over frontoparietal and posterior medial areas of the cortex7.
Flotation tanks produce the same state without training. A 2024 study compared 60 minutes of floating with 60 minutes of bed rest in 50 people. Floating produced far more body boundary dissolution, and a distortion of time with it4.
How common it is
One trial gives a number. Among 73 people in a 2024 mindfulness study who had meditated in the past six months, 28.8% reported disembodiment during meditation, which covers floating sensations and loss of body boundaries5. That is a share of meditators, not of everybody, and it came from a questionnaire given to a sub-sample. Other work uses small groups of experienced practitioners78. A large survey asking ordinary meditators the same question would firm the figure up.
Is it a problem?
Usually not. Losing track of the body’s edges during meditation or floating is a common effect of reduced sensory input45. A few people find the loss of control frightening8. It is not depersonalization-derealization disorder, which is unwanted, persistent, and distressing rather than chosen6. Mention it to a doctor if a distorted sense of your body persists after meditation, keeps coming back outside meditation, or causes you distress6.
Sources and further material
- Wikipedia Body schema Internal model of limb position. Combines position sense, touch and vision. First described in patients with parietal lobe damage.
- doi.org Induction of altered states of consciousness during Floatation-REST is associated with the dissolution of body boundaries and the distortion of subjective time Free full text. Within-subject crossover. 50 healthy people, 60 minutes of floating versus 60 minutes of bed rest.
- doi.org Altered states of consciousness caused by a mindfulness-based programme up to a year later: results from a randomised controlled trial Of 73 participants who had meditated in the past six months, 28.8% reported disembodiment during meditation.
- Wikipedia Depersonalization-derealization disorder
- doi.org Suspending the Embodied Self in Meditation Attenuates Beta Oscillations in the Posterior Medial Cortex University of Haifa. MEG study of 46 long-term meditators. High-beta power fell in frontoparietal and posterior medial cortex.
- doi.org Self-Boundary Dissolution in Meditation: A Phenomenological Investigation Free full text. Interviews with 46 meditators. 14 described expansion into vast space. 4 felt fear from a loss of control.
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