In the natural life of people there are several modes in which people tend to learn more easily. at list in one of them, we know that synaptic plasticity, induced by realse of dopamine is involved in the mechanisem of learning<ref>APA Glimcher, P.W. (2011). Understanding dopamine and reinforcement learning: The dopamine reward prediction error hypothesis. Proceedings of the National Academy of Sciences, 108(Supplement 3), 15647-15654.</ref>