Effects of Changes in Head Position on BPPV
Studies show that BPPV occurs when calcium carbonate particles (otoconia) move into your semicircular canals, structures responsible for controlling balance. The otoconia is a part of your utricle, a vestibular organ that helps maintain balance and lie close to the semicircular canals.
The otoconia in your utricle may get loose due to injury, age, or infection. The otoconia roll around and push on tiny hair-like structures (cilia) within your semicircular canals. The hair-like structures then transmit signals about balance to your brain. Vertigo commonly occurs when the cilia are stimulated by movements of the otoconia.