Experience of this kind is subjective or internal in nature and includes emotions, consciousness and experiences of time such as awareness of duration (including protracted duration and temporal compression ), simultaneity and so on. One of the most fundamental properties of the human conceptualising capacity is its tendency to structure concepts or domains relating to introspective experience in terms of concepts that derive from sensory experience. This is evident, for instance, in the phenomenon of conceptual metaphor.

The other category of experience is sensory experience.