Slide 9
Slide 9 text
Signal
• These sign
a
ls
a
re in the microvolt (μV) r
a
nge
a
nd
a
re very we
a
k, so they must be
a
mpli
f
ied
a
nd
f
iltered before further processing.
• Fe
a
tures
a
re interpreted by m
a
chine le
a
rning models (pre-tr
a
ined
a
nd propriet
a
ry) to
identify cognitive or emotion
a
l st
a
tes, or control sign
a
ls (e.g., left/right movement,
concentr
a
tion levels).
• In e
a
rly Emotiv, r
a
w EEG v
a
lues were represented
a
s 14-bit unsigned integers r
a
nging
from 0 to 16383, with 4000 often considered “neutr
a
l resting” b
a
seline in cert
a
in
con
f
igur
a
tions
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