Lesions in the CPA-IAC can compress the cochlear nerve
as it travels from the brainstem to the cochlea resulting in SNHL.
Subsequent electrocochleography revealed intact cochlear nerves
with the presence of microphonics and action potentials.
He said medically the absence of a cochlear and cochlear nerve
is referred to as cochlear aplasia.
Most meningitis cases were associated with an implant with a positioner, a silastic wedge inserted next to the implanted electrode in the cochlea to position the electrode closer to the cochlear nerve
endings and thus facilitate electrical signal transmission.
The coding of sound intensity over the normal 120 dB intensity range may, in part, be due to the mean rate of unit firing of cochlear nerve
fibers and the population of neurons excited.
Typically, AISNHL affects the sensory hair cells and not the cochlear nerve
They were located near the soft cerebral membrane, chiefly in the regions of the posterior long fasciculi, the nuclei of the abducent vestibular and trigeminus nerves, under the ependyma, in the area of the cochlear nerve
nuclei, the Gover's fasciculi, and in the base of the cerebellum.
The implants transmit sound from the ear drum to the cochlear nerve
which sends the signals on to the brain.
University press officer Peter Dunn said: "The aim is to gauge the amount of information that is coded by the cochlear nerve
in response to electrical stimulation from a cochlear implant and to find ways to increase the information transfer.
For example, cochlear nucleus magnocellularis and nucleus angularis receive inputs from the cochlear nerve
but process information on time and intensity, respectively, through parallel pathways (2).
What is particularly reprehensible in this case is that Advance Bionics, which has been entrusted with assisting young children and later-deafened or prelingually deaf adults, may have violated that trust by allowing the use of defective devices which may cause irreparable harm to the cochlear nerve
and prevent later successful use of a cochlear implant," said Teresa Curtin, an attorney with Weitz & Luxenberg P.
Each patient received a caloric test, vestibular-evoked myogenic potential (VEMP) test, and cochlear nerve
function test (hearing) before the operation and 1 week, 3, and 6 months, postoperatively.
They discovered his condition, known as Cochlear Nerve
Aplasia, was so rare they would have to travel outside Ireland for treatment.
Schwannomas arising from the cochlear nerve
and confined to the internal auditory canal are rare.