- Load your EEG dataset in EEGLAB and perform required pre-processing.
- Go to Channel time-frequency present in the GUI which will open a dialog when you can specify the channel number. However, the standard EEGLAB interface for time-frequency analysis allows you to select only one channel at a time.
- To select multiple channels, you can run the analysis using ‘pop_newtimef.m’ function in a loop for multiple channels and then plot them together or use the 'ft_multiplotTFR' function from the FieldTrip toolbox if you have it integrated with EEGLAB.
- Time-frequency analysis: https://eeglab.org/tutorials/08_Plot_data/Time-Frequency_decomposition.html
- Spectral analysis: https://eeglab.org/tutorials/ConceptsGuide/Time_frequency_tutorial.html
- newtimef.m: https://github.com/sccn/eeglab/blob/develop/functions/timefreqfunc/newtimef.m