HEARING CARE
Are you
over 50?
HOW DO
WE HEAR?
40% of
over 50’s suffer
from hearing loss
Where
ear wax is
secreted
Balance
organ
Inner
ear
The signs of
hearing loss
You have the TV
volume louder
than others
You ask others to
repeat what they have
said or comment on
people mumbling/not
speaking properly
Pinna
Ear
canal
You may avoid social
activities
You fi nd it hard to
tell where sounds
are coming from
You may raise your
voice or people
may comment that
you talk loudly
You have problems
understanding speech
in the presence of
background noise
Ear
drum
Middle
ear cavity
Eustachian
tube
Sound enters the ear canal as
pressure waves of varying pitch
and volume. These waves pass
down the ear canal and beat on
the ear drum causing it to vibrate. cells (called hair cells) according
to the pitch and volume of the
sound signal. This in turn triggers
an electrical impulse along the
auditory nerve to the brain.
The ear drum sends these vibrations
to the three middle ear bones which
in turn vibrate against the hearing
organ known as the Cochlea. In fact we are still discovering how
much hearing activates new parts of
the brain, although it is known that
hearing stimulates more areas of
the brain than any other sense. So
it is very important to preserve and
protect this most important ability.
In the Cochlea the travelling sound
wave stimulates specifi c sensory