The limbic system The neurologist Paul MacLean has proposed that our skull holds not one brain, but three, each representing a distinct evolutionary stratum that has formed upon the older layer before it, like an archaeological site: He calls it the “triune brain «MacLean, says that three brains operate like “three interconnected biological computers, [each] […]

Autonomic nervous system consists of: 1) The Hypothalamus: which is regarded as the highest control system over the autonomic motor neurons that affect the activity of our visceral organs so the hypothalamus is the center of homeostasis (continuously and unconsciously adjusting the activity of our visceral effectors to match the person’s physical activity and energy […]