Hi all,
I’m new to MNE here, and would like to clarify if my PSD topomaps and spectrum plots obtained using the output from concatenate_epochs are results of an average over all epochs or simply a summation of all epochs?
Just a sanity check because I’m starting to suspect it’s more of a summation than the averaging that I want to execute.
Some context to my doubt:
I have 10 subjects, and each subject has got 10 eeg recording data (from 10 sessions). I would like to do a subject-based analysis where I average out data from those 10 sessions for each subject, and plot the PSD spectrum and topomaps.
some snippets of my code:
"(codes with indent are part of a for loop that iterates through each subject’s folder that contains the eeg data for 10 sessions.)
epochs_rehab = mne.Epochs(raw_rehab, events_rehab, event_id=event_dict,
tmin=0.5, tmax=5, baseline=None, preload=True)
list_epochs.append(epochs_rehab)
(outside of the for loop is where the concatenation happens)
epochs_concatenated = mne.concatenate_epochs(list_epochs)
epochs_concatenated.plot_psd(picks=‘eeg’, fmin=0.5, fmax=80)
epochs_concatenated.plot_psd_topomap(ch_type=‘eeg’, normalize=False)
"
for my MNE version and OS:
- MNE version: 0.23.4
- operating system: Windows 10
Thank you for shedding light on this.
Cheers!