Ключевые слова: abstract, accumbens, axis, biochemistry, biology, brain, chemical, chemistry, cognitive, compulsive, connection, depression, endocrinology, endorphin, formula, function, health, hormonal, hormone, hormones, human, icon, illustration, isolated, line, logo, medical, medicine, mental, molecular, molecule, mood, neurological, neurotransmitter, parkinson, peptide, poster, psychiatric, psychology, raphe, reward, schizophrenia, science, serotonin, striatum, structure, symbol, synapse, system,