I think calling EEG an imaging technique is stretching things a bit (what is the spatial resolution of an EEG 'image'?). However, it is often used in a similar context to fMRI, which is also typically overlaid on a reference image. I think there should be an EEG section on this page, but also an explanation of why it is not really imaging. Also, isn't the same true for MEG? (BTW Dan, how about signing up so we can see your edits? It only takes a moment)