Hearing loss, hearing function designated the international determination worse than average condition. Hearing loss; the outer ear, middle ear, inner ear, auditory nerve, or can originate from various parts of the brain.

Types of hearing loss

1 - Conduction hearing loss,
dysfunction of the middle ear (middle ear pathologies, pathologies and diseases of the middle ear, Eustachian dysfunction, external otitis, etc.) the resulting hearing loss. It is medically to treat.

2 - sensorineural hearing loss
in the inner ear and the auditory nerve of the inner ear may be the only sign. Viral infections, genetic factors, acoustic trauma, Meniere's, head trauma, antibiotics, such as may be caused by noise exposure. It is not possible for the treatment of sensorineural hearing loss. In order to maintain efficient and compatible hearing aids must use the person's communication.

3 - mixed type hearing loss
and middle ear and inner ear of a hearing loss. In other words, the message is the same to occur with Type I and type neural hearing loss in the ear of a hearing loss. This is fine while people with hearing loss are unable to distinguish some of the words other words.

4 - Functional hearing loss of
the organic origin of non-emotional hearing loss.

5 - central hearing loss
is a hearing loss that occurred in the case of damage to the auditory nerve. Between the cochlear nuclei and the auditory cortex of the problems that occur for different reasons, for the treatment of this type of hearing loss from occurring, it is not possible.

Degrees of hearing loss

The degree of hearing loss 500, 1000 and 2000 Hz is determined according to the average. Accordingly, the rating of the pure tone average hearing loss associated with is as follows:

15 dB in children and in adults by up to 25 dB normal hearing

26-40 dB HL hearing loss,

41-55 dB HL degree of hearing loss,

56-70 dB HL hearing loss is genetic

71-90 dB HL hearing loss,

More than 91 dB HL hearing loss.

In the top graph, you see the speech banana. On the horizontal axis of the violence of the sound levels (in DB), the vertical axis shows frequencies. Accordingly, some of the letters and sounds (dog barking, aircraft such as sound) corresponds to the spots that were placed in.