The
term
presbycusis
refers
to
sensorineural
hearing
impairment
in
____________________
individuals
.
Characteristically
,
presbycusis
involves
bilateral
high
-
frequency
hearing
loss
associated
____________________
difficulty
in
speech
discrimination
and
central
auditory
processing
____________________
information
.
However
,
other
patterns
of
presbycusis
exist
.
____________________
association
between
advanced
age
and
high
-
tone
deafness
was
____________________
described
by
Zwaardemaker
in
1899
.
Since
then
,
extensive
research
____________________
attempted
to
determine
the
pathologic
changes
of
presbycusis
,
but
the
exact
mechanisms
remain
unknown
.
Presbycusis
is
an
important
problem
in
____________________
.
It
occurs
in
an
elderly
population
that
relies
on
special
senses
to
compensate
for
other
age
-
associated
disabilities
.
Elderly
____________________
may
rely
on
their
hearing
to
overcome
limitations
of
impaired
vision
and
____________________
reaction
time
.
In
addition
,
age
-
associated
decline
in
concentration
and
memory
____________________
to
difficulty
understanding
speech
,
especially
in
noisy
situations
.
Arthritis
and
impaired
dexterity
may
limit
their
ability
to
take
advantage
of
the
amplification
devices
____________________
in
rehabilitation
of
age
-
associated
hearing
____________________
.
Finally
,
hearing
loss
may
contribute
to
the
isolation
of
some
elderly
people
by
restricting
their
use
of
the
phone
,
causing
them
to
forfeit
social
opportunities
such
as
concerts
and
social
gatherings
,
and
amplifying
their
sense
of
disability
.
