Two minds work as one
The Corpus Callosum links our two brain hemispheres together as one, through a reciprocal two-way process.
In a healthy mind the right brain leads and carries the ‘map’ as a point of reference and updates the maps, where necessary.
In an unhealthy mind the map dominates our perceptions, over our senses. This can be likened to a waking dream state.
Both Freud and Jung called this waking like dream state neurosis. This would be measured by degree.as if the map overlay would increase in intensity, until it entirely overwhelmed our sensory input.
The extreme of this state being called psychosis.