The liminal space between sleeping and waking could be where the human brain conjures the uncanny.
It's there, in a state that is somehow both or neither, that the sleeping brain may extend tendrils into consciousness, or the waking mind jostle uncomfortably at the edges of sleep.
Such overlap, researchers have now found, may be behind some of the strangest experiences humans report, from the terrors of sleep paralysis to the apparent ability to send one's mind away from the body and wander around without it.
And, in turn, that could tell us something about the very nature of how we experience living in our bodies.
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