EEG processing

plotall.m

plotall function plots all the channel signals containg in the .edf (Europian Data Format) file which is generated by EMOTIV EPOC+ headset.

You need edfread() function installed.

Link: click here

Input: Path to .edf file (ex: <folder_name>/.edf) Output: Matrix of 14 channel data (14x<data_length>)

Code:

plotall("1.edf");

Output looks like this.

scatter2dall.m

This function generates set of scatter plots of all possible combination of binary feature sets

Input: param1: Data matrix with any number of features (mxn)
param2: labels for the given data set(only two classes) param3: integer valuse representing the section of
plots to show

Output: Scatter plots with 20 maximum plots

topograph.m

This function generates a topographic plot for given EDF file. You need edfread() function installed. Link: click here

Input: Path to .edf file (ex: <folder_name>/.edf)

Code:

topograph("1.edf");

Output looks like this.

You can find some EDF data in this publication. Person identification from EEG using various machine learning techniques with inter-hemispheric amplitude ratio