Annika and Tristan are two distinct persons occupying a single body. To our knowledge, their case is unique and neither understood nor even described in the psychiatric and psychological literature. They believe that their case sheds light on the nature of consciousness and mind-body interaction.

Alexander Escobar, PhD, is a biology professor at Emory University. He is author of Universal Consciousness: A Scientific Exploration. His website is https://www.linkedin.com/in/alex-escobar-7838a53a/