
64-11Biopotentials and Electrophysiology Measurement
components of the amplier must have a very low thermal noise and in particular low electronic (voltage
an
d
cu
rrent)
no
ise
at th
e
fr
ont
en
d
of th
e
am
plier
. EE
G
am
pliers
used in cl
inical
ap
plications
ag
ain
mu
st
be el
ectrically
iso
lated
an
d
pr
otected
ag
ainst
hi
gh
de
brillation
vo
ltages,
si
milar
to th
e
EC
G
am
plier
.
64.6.4 EMG Ampliers
EMG ampliers are oen used in the investigation of muscle performance, neuromuscular diseases,
an
d
in bu
ilding
ce
rtain
po
wered
or sm
art
pr
ostheses
. In su
ch
ap
plications,
sl
ightly
en
hanced
am
pli-
er
ba
ndwidth
su
ces
. In ad
dition,
po
stprocessing
ci
rcuits
ar
e