The recording of voltages along the scalp for the purpose of monitoring brain wave activity and localizing sources of ionic currents
1
vote
1answer
49 views
What is the standard way to use z-score with EEG?
I can't understand how to use normalization technique for EEG. Is it used for results of FFT or for raw EEG signal? Are there different methods with common name "z-transform"? And what z-score used in ...
4
votes
0answers
55 views
Correct method for drawing waveforms
I need to draw waveforms for biometric data like ECG and EEG signals. When I have more samples than pixels at the X-axis, I need to draw a vertical line between the MIN and MAX sample-value for that ...
3
votes
0answers
32 views
Assumptions for Hurst exponent calculation
Are there any general assumptions for the calculation of the Hurst exponent?
Does the signal need to be stationary, for example?
Does it depend on the method?
What about the length of the time ...
1
vote
1answer
47 views
What features to use for multilayer perceptron model of an EEG signal?
I have an EEG signal that I want to extract features to apply multilayer perceptron (MLP). What I should use, Fourier or wavelet coefficients?
6
votes
1answer
103 views
What is averaging and how can it be done?
I'm studying about the analysis of (mainly) fMRI and EEG data. Multiple times it's mentioned that to reduce noise, you can use averaging, but nothing more detailed than that.
There never is literally ...
2
votes
2answers
995 views
Howto calculate SNR for EEG data?
This question is about SNR in the context of EEG. (a related question about SNR)
I am interested in calculating The SNR of an ERP. My motivation is: To calculate the "signal-to-noise ratio" and from ...
7
votes
2answers
183 views
How can I distinguish between two similar EEG signals?
I have two EEG signals that are very similar. The difference is only in amplitudes. However, they are coming from two different cognitive processes. What are some methods, beside FFT, for ...
12
votes
3answers
152 views
Is ICA appropriate for separating mixed signals when all source signals are NOT detectable at all sensors?
A generic implementation of ICA for the separation of a mixture of $N$ signals into their $M$ constituent components requires that the signals be assumed to be a linear instantaneous mixture of the ...
