[1][2][3] The superior and inferior divisions of the vestibular nerve meet at the ganglion.
[2] These include hair cells of the cristae ampullaris of the semicircular duct, and the maculae of the utricle and saccule.
Much is still not known about how auditory and vestibular neurons differentiate from each other both in terms of time and dimension, however, some studies suggest that they start to diverge very early, before or soon after they turn on a gene called Neurog1.
[5] By the time gestation ends and birth occurs, the ganglion is already close to its final size.
[6] It is named for Italian anatomist and surgeon, Antonio Scarpa due to his work in outlining and detailing the anatomy of the structure alongside surrounding structures of inner ear in his 1789 note “De structura fenestrae rotundae auris, et de tympano secundario”[7][8]