When I first explored the intricacies of brain function, I was amazed how the brain works in such a sophisticated fashion. My main interest at the time was in higher brain functions – the cortex and its relation to our conscious mind. However, I soon shifted my focus to low brain function, the way the limbic system worked under the hood. In my profession, I always struggle to make distinction between head and heart. It seems like a mystery how the conscious and subconscious minds worked in conjunction with the high and low brain functions. In my next few postings, I would like to explore the functions of the human brain — particularly of the limbic system, responsible for impulsive (or subconscious) behavior.