In NLP, there is a term called Uptime and another term called Downtime.
Put it in another words, it means Conscious and Unconscious. The conscious mind is the surface structure where we use logical and rationale thinking. The unconscious mind refers to the deep structure since it is deep below the surface level.
Uptime is also referred to the Meta Model where specificity of language is required in order to make sense in communication. Downtime is about the Milton Model where it is general and non-specific. It is also known as the trance state.