We invent mind-space inside our own heads as well as the heads of others... we assume these 'spaces' without question. They are a part of what it is to be conscious. Moreover, things that in the physical-behavioural world that do not have a spatial quality are made to have such in consciousness. Otherwise we cannot be conscious of them.

The Origin of Consciousness in the Breakdown of the Bicameral Mind (ed. Houghton Mifflin Harcourt, 2000) - ISBN: 9780547527543