Semicircular Canal Dehiscence Syndrome and Vestibular Dysfunction Disqualify a Military Student Pilot.

Background: Humans detect motion and gravity via the labyrinthine system of the inner ear, which consists of the vestibule and the semicircular canals. The vestibular system provides three major functions for maintaining balance and orientation. First, it maximizes the effectiveness of the visual system.

Neurologic complications of respiratory disease.

The respiratory and central nervous systems are intimately connected through strict control of ventilation by central mechanisms. The exquisite sensitivity of central chemoreceptors and cerebral blood vessels to changes in central nervous system oxygenation mandate this type of control to maintain proper brain function. When diseases of the lung and respiratory system interfere with this fine balance, neurologic symptoms, sometimes severe, may develop.