Dopamine neurons in the primate midbrain Published June 8, 2018 at 1024 × 349 in Dopamine neurons in the primate midbrain ← Previous Next → Aydin AlikayaUniversity of Pittsburgh Dopamine neurons are critical for reward learning. Here, we used a tyrosine hydroxylase stain to reveal the distribution of dopamine neurons in a Rhesus macaque midbrain.