Huginn & Muninn (Old Norse for “Thought” and “Memory”)
Scholars have linked Odin’s relation to the ravens Huginn and Muninn to shamanic trance-state practice. Odin sends his mind on a journey through the symbolic birds. There is a stanza in the Norse Prose Edda book Grímnismál where Odin worries about the return of Huginn and Muninn. This is consistent with the danger that the shaman faces on the trance-state journey; will his mind return to the physical reality after the journey of flight?