Very interesting! I remember this being an odd gap when I took an introduction to neuroscience course many years ago. Visual perception was well understood, aud

Very interesting! I remember this being an odd gap when I took an introduction to neuroscience course many years ago. Visual perception was well understood, auditory was fairly complete (although I remember there being some mystery around sound frequencies that are to fast to be encoded), and then smell was "We have some idea but its complex and not like the others. Some theories may involve quantum mechanics".