Pineal gland
From RationalWiki
The pineal gland is a small pine cone shaped chunk of tissue tucked in the middle of the brain. It is part of the endocrine system and regulates hormones responsible for the sleep/wake cycle of animals. But what it's really known for is being the home for the ghost in the machine. Rene Descartes identified it as the place where the "mind" interacts with the "brain" in his treatise on dualism. It may look cramped but just as an infinite number of angels can dance on the head of a pin so can many souls kick it in your pineal gland.
Discordians claim they can communicate with Eris via their pineal glands. When that doesn't work, the appendix works almost as well. fnord
