cxim:
Good for you - I don't doubt that neurophysiology is brutally hard. My mother has a JD and a PhD (admittedly in English Lit) and has always maintained that grad school was fun and her PhD was a breeze compared to her JD. A friend in law school had an MD, and he also said that law school was worse, so I hardly think my statement was "foolish"; sorry you disagree.
Again, though, I am not implying that an English Lit program is anywhere near as challenging as your studies (though frankly I imagine an MD is not much easier).