[Mne_analysis] mne_compute_raw_inverse gave perfectly correlated source current estimates

[Kai Hwang]

Hello,

I am trying to use mne_compute_raw_inverse to project single trial
epochs onto the surface. The command finishes without erros, but is
generating perfectly correlated source estimates from distant regions.
The scale and sign of current estimates differ, but the correlation is
either 1 or -1.
Below is the command:

#do forward solution
mne_do_forward_solution --overwrite \
--meas ${s}_prep_ave.fif --subject ${s} --fwd ${s}_prep_ave_fwd.fif --meg --eeg
		
#create inverse operator
mne_do_inverse_operator --fwd ${s}_prep_ave_fwd.fif --depth \
--loose 0.2 --meg --eeg --senscov ${s}_prep_cov.fif --subject ${s}

#project raw data, for each label
mne_compute_raw_inverse --in ${s}_${rn}_sss_ds_raw.fif \
--inv ${s}_prep_ave_fwd.fif-meg-eeg-inv.fif \
--picknormalcomp \
--align_z \
--labeldir ./ALL-Labels \
--orignames \
--out ${s}-{rn}-label-source

However, the same inverse operator worked fine with averaged evoked
data, results are reasonable when viewed in mne_analyze.
Any idea what could have gone wrong?

Thanks!
Kai