The Organ of Corti (organum spirale) is the sensory epithelium in the cochlea. It is located on the vestibular surface of the basilar membrane. It contains hair cells that covert sound vibrations into nerve impulses, which are transmitted to the brain via Cranial Nerve VIII. The Organ of Corti is named after Alfonso Corti, an Italian anatomist, who first described the structure in 1851. He studied the mammalian auditory system, and has other eponyms in the ear: Tunnel and Rods of Corti.