The entire neuroscience department at Amherst consists of 5 professors, 2 on leave currently, only 3 on campus (a common problem when studying a narrow field at a small school).
https://www.amherst.edu/academiclife/departments/neuroscience/faculty
Northwestern has 16 dedicated neuroscience faculty currently in Evanston, more than 100 at Feinberg downtown.
http://nuin.northwestern.edu/members-2/?upage=1
http://www.neurobiology.northwestern.edu/people/core-faculty/
The opportunities for research in the field are endless at Northwestern. Yes, there is a “significant advantage” studying at an institution with this sort of depth and breadth. Quoting a list from “study.com” to argue otherwise is a bit less than compelling.