a slow-growing benign tumour arising on one of the *vestibular nerves. It is also known as an acoustic neuroma, but this is a misnomer as the tumour arises from *Schwann cells rather than nerve cells and on a vestibular nerve rather than the cochlear (acoustic) nerve. Symptoms include hearing loss, tinnitus, and imbalance and there is an increased prevalence of the tumour in patients who have *neurofibromatosis type II. Diagnosis is by MRI scan and treatment is not always required. In those cases where treatment is necessary, this may be by surgery, radiotherapy, or *gamma knife.
the division of the *vestibulocochlear nerve that carries impulses from the semicircular canals, utricle, and saccule of the inner ear to the brain, conveying information about the body’s posture and movements in space and allowing coordination and balance.... vestibular nerve
those parts of the body involved in balance. The peripheral vestibular system, or *vestibular apparatus, is in the inner ear. The central vestibular system comprises those parts of the brain that are involved in balance. The central vestibular system receives other inputs as well as from the ear, in particular inputs from the eyes and proprioceptors.... vestibular system
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