Otoconia are bio-crystals which couple mechanic forces to the sensory hair cells in the utricle and saccule, a process essential for us to sense linear acceleration and gravity for the purpose of maintaining bodily balance. In fish, structurally similar bio-crystals called otoliths mediate both balance and hearing.

Does everyone have otoconia?

As strange as it seems, everyone has microscopic crystals residing in their inner ears. These crystals are called Otoconia and are found in the Otolith organs, which are two pouches inside the vestibular system that are filled with fluid.

What is the function of Sacculus?

Function. The saccule gathers sensory information to orient the body in space. It primarily gathers information about linear movement in the vertical plane, including the force due to gravity. The saccule, like the utricle, provides information to the brain about head position when it is not moving.