The Triune Brain: Ancient Functions, Limbic System, and Neocortex

The human brain can be described as having three main parts: the lizard brain, the limbic system, and the neocortex./nThe lizard brain, or brain stem, is responsible for functions that we aren't conscious of, such as breathing and walking./nThe limbic system, which includes parts like the amygdala and nucleus accumbens, creates desires, feelings, and emotions./nThese emotions serve as signals to the neocortex, particularly the prefrontal cortex, which is responsible for conscious decision-making./nNegative emotions like anger and fear are evolved responses to real threats.