MICROANATOMY

Detailed explanation-1: -Introduction. The vestibulocochlear nerve is the eighth cranial nerve. Its cochlear branch is responsible for the special sensation of hearing, and its vestibular portions are involved in balance, spatial sensation, and posture.

Detailed explanation-2: -If the eighth cranial nerve is injured, it can’t convey information from the inner ear efficiently, resulting in hearing loss on one side. Hearing loss may result from traumatic brain injury, which is often caused by a blunt force trauma to the head or another external force.

Detailed explanation-3: -The vestibulocochlear nerve provides for hearing and balance. Patients with this nerve injury oftentimes have vertigo, tinnitus, and hearing impairment. Hearing loss due to TBIs is more frequently a sensory loss than a conductive loss. Patients may often complain of the sensation of the room spinning around them.

Detailed explanation-4: -Cranial nerve VIII brings sound and information about one’s position and movement in space into the brain. The auditory and vestibular systems subserve several functions basic to clinical medicine and to psychiatry.

Detailed explanation-5: -Labyrinthitis is the inflammation of part of the inner ear called the labyrinth. The eighth cranial nerve (vestibulocochlear nerve) may also be inflamed. The inflammation of these causes a feeling of spinning (vertigo), hearing loss, and other symptoms. In most people, these symptoms go away over time.