The pineal gland is a neuroendocrine transducer secreting melatonin responsible for physiological circadian rhythm control. A new form of biomineralization has been studied in the human pineal gland and consists of small crystals that are less than 20 microns in length. These crystals are responsible for electromechanical biological transduction mechanism in the pineal gland due to the structure and piezoelectric properties. 

The pineal gland contains calcite crystals made of calcium, carbon, and oxygen and because of their structure they express this effect like an antenna. The pineal gland has the capacity to become electrically activated and generate electromagnetic fields that can tune into information.