text: Yo, check it out, let me break it down for you,
  Pair bonding got that dopamine flowin', it's true.
  In monogamous prairie voles, we see
  Increased D1R binding in the nucleus accumbens, you see?
  
  Now, we shifted gears to a monogamous primate,
  The titi monkey, ready to demonstrate.
  Our hypothesis was the same, no doubt,
  D1R up-regulation, we gotta figure it out.
  
  Male titi monkeys were the stars of the show,
  PET scans measured D1R with a glow.
  Before and after pairing with a fine lady,
  We analyzed the changes, gettin' it all shady.
  
  Significant increases in the lateral septum we found,
  But no such changes in the accumbens, underground.
  Caudate, putamen, and ventral pallidum too,
  No action there, just the lateral septum grew.
  
  The lateral septum's got a role to play,
  In social behavior, it leads the way.
  Motivation, affect, reward, and reinforcement,
  All part of the game, it's the brain's arrangement.
  
  Pair bonding and paternal behavior, it's clear,
  The lateral septum's involved, no need to fear.
  Dopaminergic mechanisms, they might be the same,
  Across mammalian species, it's a wild aim.
  
  But the neural circuitry, it takes a different turn,
  Lateral septum's where pair bonding's gonna churn.
  This study shows neuroplasticity like never before,
  Non-human primates, we're breakin' new doors.
  
  But hold up, there's variability in the mix,
  Different responses to pairing, it's a tricky fix.
  So we need more research, dive deeper in the sea,
  To understand the full story, the true key.
  
  This study's just the beginning, mark my words,
  Exploring the dopamine system, flyin' with the birds.
  Pair bonding's got its secrets, we're unravelin' the clues,
  In non-human primates, we're breakin' news.