Hearing; acoustic energy through ear formations and the auditory nerve
The transmission to the brain is the synthesis and detection.

HEARING METHODS
a) Air Conduction: The sound of the ear membrane
oscillation
stimulating neuro-epithelial cells in cochlea
is built on.

b) Bone Conduction: Bone conduction
sound energy directly to vibrate the skull bones and
this vibration directly stimulates the cochlea.

HEARING LOSS TYPES

1- TRANSMISSION TYPE HEARING LOSS
2- MIX TYPE HEARING LOSS
3-SENSORYNEURAL HEARING LOSS

TRANSMISSION-MIX TYPE HEARING LOSS

Hearing loss; auricula, external ear canal, eardrum,
pathologies at middle ear level
hearing loss.

Audiometry; normal or normal
near bone path thresholds in the way of air conduction
degree of loss.
Air – no difference between air-bone gap
time not more than 70dB.

TRANSMISSION-MİX TYPE HEARING LOSS DISEASES

1) AURICULA AND EXTERNAL EAR LESIONS:
a) Congenital anomalies
b) Stenosis of the external ear canal
c) Otitis externa
d) Som (Serous otitis media)
e) Kom (Chronic otitis media)
f) Otosclerosis
g) Traumas
h) Tumors
j) for the outgoing feeders
k) Foreign bodies
l) Exocytosis

2) LESIONS OF THE EAR
MYRİNGİTİS
MYRİNGOSCLEROSİS
CURRENT PERFORATIONS
- Power Plant
- Waste
- Marginal
- Subtotal and total

3) MEDIUM EAR LESIONS:
-Congenital malformations
-Tuba dysfunction
- Acute otitis media (the most common disorder of childhood)
- Sudden booming otitis media
through the Eustachian tube after respiratory infections
microorganisms reach the middle ear.)

SENSORYNEURAL HEARING LOSS OF DISEASES

1) COCKLE LESIONS:
a) Heriediter diseases (Genetic)
b) Infections (Labyrinthitis)
c) Menire's disease
d) presbyacusis
e) A ototoxic
f) Acoustic Trauma
h) Traumas
j) Tumors of glomus jugular

2) RETROKOCLEAR LESIONS:
-Trauma
specific image they
-Infections (Rubella, Meningitis)
Birth trauma (Anoxia)
-Eritroblatotis fetalis (Blood incompatibility)
Neurological diseases