enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Eardrum - Wikipedia

    en.wikipedia.org/wiki/Eardrum

    The ear thereby converts and amplifies vibration in the air to vibration in cochlear fluid. [1] The malleus bone bridges the gap between the eardrum and the other ossicles. [2] Rupture or perforation of the eardrum can lead to conductive hearing loss. Collapse or retraction of the eardrum can cause conductive hearing loss or cholesteatoma.

  3. Vibration of a circular membrane - Wikipedia

    en.wikipedia.org/wiki/Vibrations_of_a_circular...

    Analyzing the vibrating drum head problem explains percussion instruments such as drums and timpani. However, there is also a biological application in the working of the eardrum . From an educational point of view the modes of a two-dimensional object are a convenient way to visually demonstrate the meaning of modes, nodes, antinodes and even ...

  4. Tympanum (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Tympanum_(anatomy)

    A frog's ear drum works in very much the same way as does a human eardrum. It is a membrane that is stretched across a ring of cartilage like a snare drum that vibrates. Crossing the middle ear chamber there is an ossicle called the columella that is connected to the tympanum, and another ossicle, the operculum, that connects this to the oval ...

  5. Middle ear - Wikipedia

    en.wikipedia.org/wiki/Middle_ear

    The eardrum is merged to the malleus, which connects to the incus, which in turn connects to the stapes. Vibrations of the stapes footplate introduce pressure waves in the inner ear. There is a steadily increasing body of evidence that shows that the lever arm ratio is actually variable, depending on frequency.

  6. Tensor tympani muscle - Wikipedia

    en.wikipedia.org/wiki/Tensor_tympani_muscle

    The tensor tympani acts to damp the noise produced by chewing. When tensed, the muscle pulls the malleus medially, tensing the tympanic membrane and damping vibration in the ear ossicles and thereby reducing the perceived amplitude of sounds. It is not to be confused by the acoustic reflex, but can be activated by the startle reflex.

  7. Ossicles - Wikipedia

    en.wikipedia.org/wiki/Ossicles

    The ossicles give the eardrum a mechanical advantage via lever action and a reduction in the area of force distribution; the resulting vibrations are stronger but don't move as far. This allows more efficient coupling than if the sound waves were transmitted directly from the outer ear to the oval window.

  8. Tympanometry - Wikipedia

    en.wikipedia.org/wiki/Tympanometry

    Tympanometry is an acoustic evaluation of the condition of the middle ear [1] eardrum (tympanic membrane) and the conduction bones by creating variations of air pressure in the ear canal. Tympanometry is an objective test of middle-ear function. It is not a hearing test, but rather a measure of energy transmission through the middle ear. It is ...

  9. Cartilage conduction - Wikipedia

    en.wikipedia.org/wiki/Cartilage_conduction

    Air conduction: Sound propagated from a sound source through the air is received by the outer ear, and then transmitted via the ear drum, middle ear, and inner ear. Bone conduction: Sound from a vibrator oscillates the skull bone, and the vibration is transmitted directly to the inner ear without passing through the ear drum and middle ear.