Hello Vendela - I think you are refering to the Roger Callois quote:
Space pursues them, encircles them, digests them in a gigantic phagocytosis. It ends by replacing them. Then the body separates itself from thought, the individual breaks the boundary of his skin and occupies the other side of his senses. He tries to look at himself from any point whatever in space. He feels himself becoming space, dark space where things cannot be put. He is similar, not similar to something, but just similar. And he invents spaces of which he is "the convulsive possession." All these expressions shed light on a single process: depersonalization by assimilation to space, i.e., what mimicry achieves morphologically in certain animal species (Caillois, 1935).link to it here:http://www.generation-online.org/p/fpcaillois.htm
Mimicry and Legendary Psychasthenia*
Roger Caillois originally published in Minatoure, 7, 1935.

Elizabeth Grosz, in Grosz, E. (1994) Volatile Bodies Toward a Corporeal Feminism, Bloomington: Indiana University Press.
also talks about the condition, Legendary Psychasthenia which I referenced.
Hope that helps!
Good luck with your research