Tulving originally argued only humans have episodic memory. However, studies in corvids (scrub jays remembering what, where, when) and rodents show —though lacking autonoetic consciousness. This has sparked a distinction between behavioral episodic memory and phenomenological experience.
Sleep (especially slow-wave and REM) preferentially consolidates episodic memories into neocortical semantic networks. This transformation is a key mechanism for the episodic-to-semantic shift.
The Tapestry of Memory: Reliving vs. Knowing Human memory is not a single storage bin; it is a sophisticated dual system that allows us to both navigate the present and preserve our personal history. Since psychologist first proposed the distinction in 1972, scientists have categorized our "explicit" or conscious memories into two primary types: episodic and semantic .