Arousal and alertness

1. Neurotransmitters in the gut vs. cognitive neurotransmitters (Neuroscience Tips)
2. Dopamine vs. Noradrenaline (Neuroscience Tips)
3. Serotonin vs. Norepinephrine (Neuroscience Tips)
4. Amygdala vs. Hippocampus (Neuroscience Tips)