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Otolaryngology - Ear Related Terms

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  • Octave Band Analysis

  • An analysis of noise levels or attenuation into bands one octave apart. The minimum required in Europe is the figures for 125, 250, 500, 1000, 2000, 4000 and 8000 hertz.

  • Order of Sound Passage

  • Ear Canal, Ear Drum, Hammer, Anvil, Stirrup, Cochlea, Auditory Nerve, Brain

  • Organ of Corti

  • The sensitive organ of hearing within the cochlear duct. The organ of Corti contains specialized cells called hair cells that transduce sound vibrations into electrical impulses.

  • Ossicles

  • The three smallest bones in the human body. The ossicles consist of the malleus, incus, and stapes (known also as the hammer, anvil, and stirrup, respectively), found in the middle ear. They are part of the system that amplifies sound vibrations that enter the middle ear.

  • Ossicular Chain

  • The three bones that make up the ossicles of the middle ear (the malleus, incus, and stapes).

  • Otitis

  • Any type of ear inflammation or infection (otitis)

  • Otitis Externa

  • Inflammation of the outer ear, mainly the ear canal.

  • Otitis Media

  • An inflammation of the middle ear, usually associated with a buildup of fluid related to a viral or bacterial infection. The obstruction can cause hearing problems, which may arise when the fluid interferes with the ability of the ossicles to conduct sound vibrations to the inner ear.

  • Otoacoustic Emission (OAE)

  • Faint acoustical signals that emit from the outer hair cells located in the cochlea of the inner ear. These signals can be recorded in the ear canal by a sensitive microphone and can give information regarding the cochlear portion of the inner ear. These are measured by non-invasive means of placing a plug in the ear canal and recording the responses to either a click or pure-tone stimulus.

  • Otosclerosis

  • An abnormal growth of bone in the middle ear, which prevents structures within the ear from working properly, causing hearing loss.

  • Ototoxic

  • Any substance that damages auditory tissues, including a special class of antibiotics, called aminoglycoside antibiotics, that can damage hearing and balance organs for individuals who are sensitive.

  • Outer Ear

  • The outer most portion of the ear encompassing the pinna and ear canal.

  • Oval Window

  • An opening in the bony wall that separates the middle ear from the inner ear.


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Ear Related Terms


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