Ascended Space is a space characterized by consistency of belief in the power and potential of spiritual phenomenon.
Delorian describes the maintanence of an ascended space in the Spirit Lodge. This space is maintained by removing "disharmony", i.e., those whose negative beliefs and skepticism might interfere with spiritual processes. 
- Delorian, Vine Jr. The World We Used to Live In: Remembering the Powers of the Medicine Men. Colorado: Fulcrum Publishing, 2006.