[ravi-delia]

EEG studies are rife with issues, but there are a number of very well replicated results. Obviously they do nothing to localize an effect, but there are absolutely clear correspondences between the readings of an EEG and at least some cognitive activity.

Will you get that nice FMRI resolution? Absolutely not. But the effects you do get are fascinating, and super weird.

Now that's the EEG I've seen in labs. Not sure if there is a similarly good commercial offering.