Often artifact removal means throwing out a lot of valuable signal. Is it worthwhile to throw the baby out with the bathwater?

The EEG signal is sensitive to movement of facial muscles such as eyeblink, furrowing the brow and a host of other movements of the head. The eyeblink is a particularly stereotypical movement artifact and lends itself better to more specific extraction see Getting rid of eye blink in the EEG).

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https://sapienlabs.org/perils-of-eeg-preprocessing