[DonRotolo]

Along the same lines, speak with college professors, particularly the department heads. Make appointments and visit (or phone) them. Trust me, they'll be happy to speak to you. Pick a local school (even if you're not planning on going there) so it's easy to visit, or pick a school where you think you might apply. The admissions office can get you the contact info for the folks who will help the most.

MechE is the broadest degree. If you're more focused on the input controls (neuro interface) then I agree, EE with a focus on signals is where you need to go. These are two radically different courses of study...after the first year. Until then, EVERYone takes calc, physics, chem, etc. and it's almost identical for all engineering disciplines. So you have time for that decision.