text: Yo, listen up, I got a story to tell
  'Bout the supramammillary region, it rings a bell
  In the posterior hypothalamus, it resides
  Controlling theta oscillations, it ain't no lies
  
  Known for regulating arousal, that's its game
  But recent studies show it's got more to claim
  Stimulating SuM neurons, with substances abused
  Leads to reinforcement, got the mice enthused
  
  So we did some tests, to dig deeper, you see
  Using optogenetics, we set the neurons free
  Found out SuM glutamatergic cells bring the thrill
  In mice, they were reinforcing, that's the real deal
  
  Their projections to septal neurons, they transmit
  Passing the effect, they surely don't quit
  SuM neurons active during exploration, approach behavior too
  But when it's time for sucrose, their activity they subdue
  
  When we blocked SuM neurons, approach responses were lost
  But sucrose consumption remained, no matter the cost
  Sounds familiar, like mesolimbic dopamine neurons, they say
  SuM-to-septum GLU neurons, activating them in their own way
  
  Septum-to-ventral tegmental area, continuing the flow
  Activating mesolimbic dopamine neurons, you know
  It's the supramammillo-septo-VTA pathway, my friend
  Regulating arousal, reinforcing interactions to no end
  
  So there you have it, the story's complete
  The SuM's role in the brain, can't be beat
  Regulating theta oscillations and arousal too
  Reinforcing behaviors, that's what SuM neurons do