JSTOR.com

How scholarly do you want it to be? If she has access to a library’s databases; CINAHL, PubMed, Health Reference Center, etc. are all good sources. For more layperson’s info, I go to WebMD or the Mayo Clinic.

I think she’s just looking more for reference purposes, rather than specific research. “Principles 101” – like.

This site from the University of Texas Medical School looks like a good reputable overview.

If you look for .edu extensions you should be able to rely on the results. (Some .org extensions may be good or may not.)

I put in the search term “neuroscience overview.”

@PriceisRightx26 ^^University Librarian and PENGUIN WITH TEETH.

Google “Degenerative Organic Brain Disease” and you will get a choice of 372,000 definitions, descriptions, articles, studies and—starting at about page 6—the pseudo-scientific crap. Many of these come from the sources the Penguin cited above. If your friend is stepping outside of her discipline, then she should start with the medical definition, then an encyclopedia article. After that she can surf for the specific information she wants with more success and less wasted time in dead ends and false leads.