The Third Eye and the Pineal Gland
The Eye of Horus and the pineal gland in cross section
There is considerable lore in the New Age community about this little hormone producer. What we know for certain is that it takes sensory impulses from the eyes and converts these into chemical secretions, primarily melatonin but also serotonin and some others. In this way it controls our sleep and waking cycles. Basically it tells us to sleep more when it is darker.
Neuroscience, in July of 2013, in this study confirmed what some had long suspected that the gland produced the molecule known as;dimethyltryptamine (DMT) in subject rats. This molecule is a hallucinogen when ingested by human beings producing intense experiences of a spiritual nature.