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Descriptive stats in EEGlab

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C Simon
C Simon on 10 Apr 2018
Commented: Von Duesenberg on 11 Apr 2018
Hello, I am new to EEGlab and would love to find out how to first view some basic statistics about a recording. The recording was done with only one person watching a presentation for 45 minutes and wearing an Emotiv Epoc headset (14 channels). I performed all the steps I read in the EEGlab manual, such as setting channel locations, applying filters, removing ICA (not sure if I need to re-reference?). For this initial study, I did not add any particular events, it was mostly exploratory, I wanted to see the predominant brain waves and how they change as the presentation progresses. So my questions are: how do I find out answers to basic questions such as: what was the dominant brain wave for the participant during the 45 minutes? Were they mostly in a theta state, alpha, something else? And are there some simple ways in which I can tell at what points there were any important oscillations? Or whether specific areas were "coupled"? Or any other basic questions and answers I can find in the absence of setting particular events? Thank you so much!

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Accepted Answer

Von Duesenberg
Von Duesenberg on 10 Apr 2018
You can start with simple spectrograms and then move to coherence analysis, there's an example here if you have the wavelet toolbox:
Regarding your other questions, you should read the literature as well as introductory textbooks. Good luck!

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C Simon
C Simon on 11 Apr 2018
Thank you so much! Are there any introductory textbooks you recommend?
Von Duesenberg
Von Duesenberg on 11 Apr 2018
As I mentioned in a previous answer, the book by S.J Luck is quite good although, if I remember well, it does not cover time-frequency analysis in depth. Analyzing neural time series data by Mike Cohen is worth reading as well (and it contains Matlab code if I'm not mistaken).

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