Dear Expert,

I am writing to seek your advice on conducting a source analysis for time-frequency maps.

First, I implemented time-frequency analysis of EEG data using scripts in Matlab. And then I performed SVM analysis to establish a relationship between the time-frequency data and behavior, discovering that certain cluster in the time-frequency map of a specific channel is correlated with behavior. I am interested in conducting a source analysis for this cluster across all electrodes. However, it seems challenging to achieve in brainstorm, as the tutorial mentions that source analysis can be performed on EEG time-domain data but not on certain cluster of time-frequency maps.

The steps I have followed for analysis are as follows:

- Extracting the average values (such as 5
*10^(-6), 4.5*10^(-6), etc) of the cluster for all electrodes. - Converting these values into time-domain signals (In each of the 59 channels, there are 1,500 identical values, e.g., 5*10^(-6)). ps. time points=1500
- Conducting source analysis on these reconstructed signals.

I am unsure if extracting fixed values to construct an EEG signal for source analysis is a viable approach or if Brainstorm offers alternative methods for source analysis of certain cluster in the time-frequency data which is imported from the matlab.

I would greatly appreciate any guidance or suggestions provided on this matter.

Best,

Sheenagh