Dear MNE community,
I’m working with a recorded EEG dataset that is relatively noisy. When inspecting the power spectral density of the raw data, I noticed that a subset of electrodes shows a pronounced, rhythmic-looking pattern in the spectrum (see attached figure). Interestingly, this pattern also seems to extend to a number of other channels.
Has anyone encountered similar patterns before or have any ideas about what might be causing them?
Many thanks in advance for any thoughts or suggestions!
