<s>
In	O
human	O
neuroanatomy	O
,	O
brainstem	B-Algorithm
auditory	I-Algorithm
evoked	I-Algorithm
potentials	I-Algorithm
(	O
BAEPs	B-Algorithm
)	O
,	O
also	O
called	O
brainstem	B-Algorithm
auditory	I-Algorithm
evoked	I-Algorithm
responses	I-Algorithm
(	O
BAERs	O
)	O
,	O
are	O
very	O
small	O
auditory	O
evoked	O
potentials	O
in	O
response	O
to	O
an	O
auditory	O
stimulus	O
,	O
which	O
are	O
recorded	O
by	O
electrodes	O
placed	O
on	O
the	O
scalp	O
.	O
</s>
<s>
They	O
typically	O
have	O
a	O
response	O
latency	O
of	O
no	O
more	O
than	O
six	O
milliseconds	O
with	O
an	O
amplitude	B-Application
of	O
approximately	O
one	O
microvolt	O
.	O
</s>
<s>
Due	O
to	O
their	O
small	O
amplitude	B-Application
,	O
500	O
or	O
more	O
repetitions	O
of	O
the	O
auditory	O
stimulus	O
are	O
required	O
in	O
order	O
to	O
average	O
out	O
the	O
random	O
background	O
electrical	O
activity	O
.	O
</s>
<s>
Although	O
it	O
is	O
possible	O
to	O
obtain	O
a	O
BAEP	B-Algorithm
to	O
a	O
pure	O
tone	O
stimulus	O
in	O
the	O
hearing	O
range	O
,	O
a	O
more	O
effective	O
auditory	O
stimulus	O
contains	O
a	O
range	O
of	O
frequencies	O
in	O
the	O
form	O
of	O
a	O
short	O
sharp	O
click	O
.	O
</s>
<s>
Long	O
and	O
Allen	O
were	O
the	O
first	O
to	O
report	O
the	O
abnormal	O
BAEPs	B-Algorithm
in	O
an	O
alcoholic	O
woman	O
who	O
recovered	O
from	O
acquired	O
central	O
hypoventilation	O
syndrome	O
.	O
</s>
