It is a small gland about the size of a rice, located in the center of the brain and at eye level. By producing melatonin, this gland has the influence of regulating the sleep cycle, sexual activities and reproduction. It is a chronobiological organ, an internal clock that acts to capture the sun's and moon's radiations. It obeys the circadian cycle, which corresponds to the elementsThe circadian cycle designates the period of approximately 24 hours on which the biological cycle of almost all living things is based, and is influenced mainly by the variation of light, temperature, tides, and winds between day and night.

The pineal goes through a natural calcification process, reducing in size along its development. Based on this process, it was believed by specialists that it would be a "vestigial" organ, that is, it would disappear with evolution, but nowadays this process has been discarded.spirituality, which has already explained the true function and importance of the pineal gland.

The Spiritist View of the Pineal Gland

It is known as the "union" between body and spirit, known as the "third eye" or "eye of conscience" in the spiritualist doctrine of Allan Kardec. The doctrine states that the gland is responsible for the connection that exists between human beings and spirituality and is represented by the Egyptian eye of Horus, that is, the all-seeing eye. The gland represents the crown chakra, the main center of the spirit.The chakras, in turn, are energy points that circulate through our body. We have seven main points and the pineal gland is the most important one. A good tip for activating the third eye is to have spirituality crystals, such as amethyst, lapis lazuli or sodalite. They help and are great for regulating the frequency if they are linked to Yoga, a gooddiet, meditations, and activation mantras.

The philosopher Descartes believed in the connection of the pineal gland with spirituality; thus, it was called the "main seat of the soul". René was sure that the pineal was the "seat of the soul and the body", the organ capable of revealing spiritual impressions to our brain. His theory was that the gland would give the visual perception that light projects, the pineal feels the projection in the fieldelectromagnetic through which it is interfered with by spirituality, which is then understood by the brain in a similar way to the interpretation of vision as the other physical senses.

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Allan Kardec's doctrine does not directly mention the pineal gland, but Kardec defined that the mediumistic process is natural, that is, it follows the physical structure of the medium, regardless of faith, belief or good will. This natural process needs a channel that produces material resources for mediumistic development, which needs a special fluid that makes the perispiritual connection betweenthe mediums and spirits, and the pineal gland would be the producer of this resource.

According to the psychiatrist Dr. Sérgio Felipe de Oliveira, a follower of Descartes' ideas and of the spirit André Luiz, the pineal gland would be a sensory organ of spiritual nature that favors the mediumistic capacity; it would be a "catcher" capable of perceiving the electromagnetic waves of the spirituality and convert them into neurochemical stimuli, which corresponds to the messages received from adisincarnate by a medium or a sensitive through telepathy between incarnates.