DTF
Determination of EEG propagation in brain
Simultation scheme
| Step
1.
In order to test the properties of DTF series of simulations
were performed. As an input signal (channel 1) the artifact free
electrode was chosen. The signal was bandpass filtered in 4-45 Hz range
and normalized namely: its mean was set to 0 and variance to 1. 
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| Step 2.
The noise was added. 
|
| Step 3.
In this way the signal in the first channel was constructed. 
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| Step 4.
The propagations were constructed by applying different delays
to
the signal 1 and adding noise series. 
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| Summarizing
The simulated signals can be represented by: X1(t)=EEG(t)+e1(t)
X2(t)=A1X1(t-d1)+e2(t) ... Xn(t)=AnX1(t-dn)+en(t) Where
t - time EEG(t) - filtered and normalized EEG signal from P3 electrode Xn(t) - signal in n-th channel en(t) - noise in n-th channel dn - delay in n-th channel An - weight of the connection between channel 1 and channel n |
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