That there is a basis in neurophysiology is, in one aspect, a no-brainer, after all--before you can respond to something, our central nevous system has to perceive it--we aren't going to be able to hear sounds outside the audible range or see colors outside the visible range--When it comes to how we process this stuff, it moves toward the psychological realm, and when it comes to finding meanings in it, that slides into philosphy--

Although the interrelationship between brain and mind seems, perhaps a bit daunting, the musical structures themselves are remarkably easy to measure, to organize, and to replicate--best of all, you can alter them any way you want!