Ключевые слова: acetylcholine, addiction, adrenaline, anxiety, balance, brain, chemistry, cognition, communication, cortisol, depression, dopamine, endorphins, function, gaba, glutamate, health, illustration, imbalance, memory, mental, mood, neurons, neurotransmitters, oxytocin, pathways, plasticity, receptors, regulation, reward, serotonin, stress, synapses,