Natural rewards

1. Dopamine vs. Serotonin (Neuroscience Tips)
2. Microbiota-gut-brain signaling vs. addictive behaviors (Neuroscience Tips)
3. Cortical vs. Subcortical Structures (Neuroscience Tips)
4. Gut-brain axis vs. substance abuse (Neuroscience Tips)
5. Substantia Nigra vs. Ventral Tegmental Area (Neuroscience Tips)
6. Ventral Tegmental Area vs. Nucleus Accumbens (Neuroscience Tips)