Mood regulation mechanisms

1. Gut microbiota vs. gut-brain axis (Neuroscience Tips)
2. Understanding Cognitive Science: Dopamine vs. Serotonin (Neurotransmitter Functions)
3. Dopamine vs. glutamate vs. serotonin receptors (Nootropic Key Ideas)
4. Gut-brain interaction vs. attentional switching (Neuroscience Tips)