IASIS TECHNOLOGIES MCN - Page 13

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inter-subject emotion space
Independently-rated
“Emotion Space”
EEG “Emotion
Space”
Multi-dimensional
scaling
g IMs (all subjects)
valence-correlation-weighted dipole density
(gamma IMs)
electrical circuits
Current ow
for tACS is
alternating
Basic circuit
R ~ skin-electrode contact
(impedence)
transcranial direct current stimulation
tDCS appears to be safe (Bikson et al., 2009)
and eective for depression (Boggio et al.,
2008), chronic pain (Fenton et al., 2009;
Fregni et al., 2006), stroke (Baker et al.,
2010), and alcohol craving (Boggio,
et al., 2008)
transcranial magnetic stimulation
TMS has shown clinical ecacy
for depression (Loo & Mitchell,
2005), hallucinations (Aleman
et al., 2007), drug craving (Barr
et al., 2011) and PTSD (Karsen
et al., 2013; Osuch et al., 2009),
while also having a very low in-
cidence of unwanted side eects
(Rossi et al., 2009).
penetration of current into the brain
CURRENT DISTRIBUTION IN THE BRAIN
Most of the current is shunted through the skin
Current density (A/m2)
Skin: 1.7
CSF: 0.38
Brain: 0.1