Psychic brain, conceptual image. Artwork showing the human brain from the side, surrounded by flames, with the pineal gland shown. This structure is the small protrusion (orange) shown above the cerebellum (lower left), the rounded structure at the rear base of the brain. The pineal gland performs a variety of functions, including the production of the hormone melatonin to regulate sleep patterns. The pineal gland is sometimes called the 'third eye' or the seat of the soul, with psychic and mystical significance attached to it.
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