Oversimplified

• Dorsal striatum

  Habit
• Ventral striatum

  Operant conditioning
• Striatum outputs

  Dopamine
• Substantia nigra

  Dopamine
• Caudate

  Operant conditioning
• Putamen

  Motor learning
• dSPNs

  Increases motor activity
• iSPNs

  Decreases motor activity
• Globus Pallidus

  Regulates movement with SPNs
• Subthalamic nucleus

  Indirect pathway through ganglia