I am using OPENBCI 21 channel cap with Cyton and daisy board. My PHD thesis is to collect data for emotion classification using random visual stimuli. I have developed a MATLAB software to separate and label the collected data for classification. I have an issue that the data I am getting from my OPENBCI device is too noisy .I have settled everything in GUI (Smoothing On, Notch filter 50, Bandpass 5 to 50 Hz) All channels are NOT RAILED and impedance is Green with all channels though the values are high but channels are GREEN as per vendor recommendations. Can anyone guide what to do .I am also attaching the images of my Eye closed of 2 minutes data. Application of filters is in MATLAB code is not creating any difference in it.
(https://ieeexplore.ieee.org/abstract/document/9862906) papers talks about cancelling gain of differential amplifier. Can anyone that do we subtract differential gain using this formulae:
%DC offset Removal
for i=1:16
final(:,i)=data(:,i)-mean(data(:,i))
end;
Thank you so much sir...but sir correct me if I am wrong as, I have read to subtract the mean of data from original data...as
Cleaned data=original data-mean(original data)
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