In this context, it is apparently a term with a psychological flavor. The person is emotionally disturbed and repeatedly inflicts injuries on himself, resulting in hospitalization and serious medical procedures. The person intensely desires all of this, and wants the (perceptual) experience that the hospitalization is the result of some naturally occurring illness or injury.
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woodslimhave a perceptual stay in the hospitalAre you absolutely sure you have the right word? It seems to me that it should be "have a perpetual stay in the hospital".
woodslimthat might act as "perceptual stays" in moments of emergency."~ that might act as anchors (reference points) for our perceptions in moments of emergency.
woodslimI still wonder if this isI've never heard it before. I would not call it jargon. It seems a made-up expression just for use in the particular context of that book.ajargon. Have you ever heard that expression before?