![]() Ann NY Acad Sci 374:412–420Ĭitrom L, Dix MR, Hoallpike CS (1976) A recent clinico-pathological study of cochlear nerve degeneration resulting from tumor pressure and disseminated sclerosis with particular reference to the finding of normal threshold sensitivity for pure tones. Jerger J, Neely JD, Jeger S (1981) Speech audiometry, and auditory brain stem response in auditory brain stem tumors: importance of a multiple-test strategy. In: Auditory disorders, a manual for clinical evaluations. ![]() ![]() Jerger S, Jerger J (1980) Intracranial tumors affecting the central auditory system and multiple sclerosis. Schuknecht H, Woellner R (1955) An experimental and clinical study of deafness from lesions of the cochlear nerve. Effects of decreasing L 2below L 1 J Acoust Soc Am 97:2346–2358 Whitefield ML, McCoy MJ, Lonsbury-Martin BL, et al (1955) Dependence of distortionproduct otoacoustic emissions on primary levels in normal and impaired ears. Martin GM, Ohlms LA, Flanklin DF, et al (1990) Distortion product emissions in humans. ![]() Hurley RM, Musiek FE (1994) Effectiveness of transient-evoked otoacoustic emissions (TEOAEs) in predicting hearing level. Brain 119:741–753Ĭollet K, Veuillet E, Chanal JM, et al (1991) Evoked otoacoustic emissions: correlates between spectrum analysis and audiogram. Starr A, Piction TW, Sininger Y, et al (1996) Auditory neuropathy. Kaga K, Nakamura M, Shinogami M, et al (1996) Auditory nerve disease of both ears revealed by auditory brainstem responses, electrocochleography and otoacoustic emissions. Shanon E, Gold A, Himmelfarb MS (1981) Auditory brainstem responses in cerebellopontine angle tumors. Arch Otolaryngol Head Neck Surg 104:679–684 In rare cases, hearing loss can be sudden. Yllikoski J, Collan Y, Palva T, et al (1978) Cochlear nerve in neurilemomas: audiology and histopathology. Common symptoms of an acoustic neuroma include: Hearing loss, usually gradually over months to years. Schuknecht HF (1993) Pathology of the ear. Suga F, Lindsay JR (1976) Inner ear degeneration in acoustic neurinoma. Arch Otolaryngol 86:25–31ĭe Moura L (1967) Inner ear pathology in acoustic neurinoma. Ann Otol Rhinol Laryngol 89:1–19īenitez JT, Lopez Rios G, Novoa V (1967) Bilateal acoustic neuroma: a human temporal bone report. Arch Otolaryngol 103:181–187Įggermont JJ, Don M, Brackmann DE (1980) Electrocochleography and auditory brainstem electric responses in patients with pontine angle tumours. The brain then interprets these electrical signals as sound.Selters W, Brackmann DE (1977) Acoustic tumor detection with brainstem electric response audiometry. ![]() This movement of the hair cells sends electric signals from the inner ear up the auditory nerve (also known as the hearing nerve) to the brain. Movement of the fluid in the inner ear, or cochlea, causes changes in tiny structures called hair cells. Vibrations from the eardrum cause the ossicles to vibrate which, in turn, creates movement of the fluid in the inner ear. This chain of tiny bones is connected to the eardrum at one end and to an opening to the inner ear at the other end. The middle earis a space behind the eardrum that contains three small bones called ossicles. Sound travels down the ear canal, striking the eardrum which causes it to move or vibrate. The outer ear consists of the ear canal and eardrum. The ear can be divided into three parts leading up to the brain – the outer ear, middle ear and the inner ear. ![]()
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