Explain the Theory of Immittance Audiometry

1
Earwax Removal Requires a Professional

• Tinnitus is defined as hearing a noise when no
  sound is present. While it often manifests and is
  frequently described as a "ringing in the ears,"
  it can also be perceived as a click or a hiss.
  It's a common symptom experienced by 1 in 5
  people in the United States. It is important to
  note that it is not a condition itself, but a
  symptom that can be caused by a number of
  underlying conditions. By far, the most common
  cause is noise-induced hearing loss. Prolonged
  and/or persistent exposure to loud noises damages
  the cochlea. The cochlea is a spiral-shaped
  cavity in the inner ear that is lined with
  nerve-ends to respond to vibrations.

2

• Over time, the cochlea becomes harmed in such a
  way that it reacts to non-existent external
  vibration stimuli. People who frequent loud
  concerts or work in music venues, or people who
  work with heavy machinery like carpenters and
  road workers, are commonly afflicted. The best
  way to prevent damage is to wear earplugs or
  earmuffs. In other cases, the ringing sensation
  is caused by the natural loss of hearing due to
  aging, Meniere's disease, head injuries, or even
  something as simple as wax build-up putting
  pressure on the inner ear. In rare instances, the
  ringing sensation can be caused by high blood
  pressure, which leads to what's known as
  pulsatile tinnitus.

3

• In that case, the ringing manifests not as a
  constant hum but beats in time with an individual
  pulse Because it is a symptom of a number of
  possible conditions, there is no "cure" for
  tinnitus. Addressing the underlying cause may
  help, but, in the case of noise or age-induced
  hearing loss, there is little that can be done.
  For the vast majority of people afflicted,
  tinnitus is merely a mild annoyance that can even
  go unnoticed most of the time. If the ringing is
  perceived at a very low volume, the noise of
  everyday life will likely drown it out. In that
  case, the symptom will be most pronounced when
  trying to sleep. If it is low enough, ambient
  sound can help push out the ringing sound without
  depriving the afflicted of sleep.

4

• In severe or "catastrophic" cases, the ringing
  can be so severe as to go beyond mere annoyance
  and interfere with an individual's social and
  professional life. In those cases, doctors can
  apply Tinnitus Terminator Review a number of
  methods to help alleviate the ringing sound.
  Cognitive behavioral therapy can be employed as a
  psychological technique. While this will not cure
  tinnitus, it helps people ignore the symptoms so
  they can get on with their lives. Other methods
  that can be employed in extreme cases include
  hearing aids and other sound generation
  techniques that are designed to overlap and
  cancel out the specific frequencies experienced.
  In most cases, those who suffer from the ringing
  eventually become accustomed to it and, after
  time, simply ignore it.
• http//google.ning.com/story/tinnitus-terminator-b
  ook-review