Since reading Jessica Helfand’s lovely post The Art of Thinking Through Making on Design Observer, I have been pondering the origins of ideas. This led me to some intriguing research on the origin of the human brain, and what I discovered was fascinating. According to evolutionary neuroanatomist Paul MacLean, the human brain is actually comprised of three separate “sub-brains,” each the result of a distinct age in our evolutionary history. The three brains communicate with each other and intermingle, but these “three brains in one,” (or what is now called a triune) is unique to only one species: us.
A (Very) Brief History and Explanation of The Human Brain
The Reptilian Brain
The oldest of the three parts of the triune is the reptilian brain. This brain is responsible for all of our vital but involuntary behaviors: regulation of the heart and lungs, metabolism, the digestive system and the adrenalin rush we feel when we believe we may be in danger. This ancient part of our brain is fundamentally all about survival. It sits quietly on the top of the spinal cord and keeps all of our bodily functions running, whether we are conscious or not.
The Limbic Brain
In the late 1800’s Paul Broca, a French neuroanatomist, published a paper that suggested the brains of all mammals had something in common. He called this the great limbic lobe. Broca determined that he could see what he called a significant line of demarcation between this aspect of the brain and the rest of the cerebral cortex. The limbic brain, as we now call it, includes the hippocampus, the fornix, septum, cingulated gryus, amygdala, perihinal and perihippocampal regions. This proved to be the part of the brain that separated prehistoric mankind from a more modern species, or “the age of mammals.” Mammals have hair rather than scales, they are self-heating and they give birth to babies (as opposed to eggs). Mammals also have an innate orientation to their offspring, which we now consider the feelings of love. Reptiles do not. Essentially, mammals take care of their own (aside from maybe the current U.S. administration, but that is another post entirely).
The Neocortex
The neocortex (which has its derivation from the Greek for “new”) is the most recent of the triune, and it is also the largest. Language, reading, writing and reasoning all originate in this area of the brain. In fact, all of the experiences of our senses and all of our voluntary behavior is controlled by the neocortex. We now call this phenomena “consciousness” or “awareness.” The most fascinating aspect of the neocortal brain is its skills of abstraction. As a result, any exercise that signifies the need for “symbolic representation” and all problem solving (whether artistic or scientific) has its origins in the neocortex.
According to Thomas Lewis’ marvelous book A General Theory of Love , “The scientist and artist both speak to the turmoil that comes from having a triune brain. A person cannot direct his emotional life in the way he bids his motor system to reach for a cup. He cannot will himself to want the right thing, or to love the right person, or to be happy after a disappointment, or even to be happy in happy times. People lack this capacity not through a deficiency of discipline but because of the jurisdiction of will is limited to the latest brain and to those functions within its purview. Emotional life can be influenced, but it can not be commanded. Our society’s love affair with mechanical devices that respond at a button-touch does not prepare us to deal with the unruly organic mind that dwells within. Anything that does not comply must be broken or poorly designed.”
Which, as Charles Olsen might say, “makes for difficulties.” Our neocortal brain has the ability to organize and convey logic and reason. The limbic brain inspires and can involuntarily feel love. Yet, according to Lewis, “The verbal rendition of emotional material demands a difficult transmutation….Poetry, a bridge between the neocortical and limbic brains, is simultaneously improbable and powerful.”
In Jessica’s Design Observer post, she articulates a need to think in order to better understand the path of design. I now wonder this: where does the act and practice of design originate? Where is the seed of the discipline? We know design is a curious endeavor: part abstraction, part reason, part science, part artistry. Can we assume that design (like poetry) is a bridge between our prehistoric and modern brains? Is that too lofty an allegation? If so, where specifically does design originate: with a thought or with a feeling?
This will probably sound too academic, but I wonder if the ideas argument should be prefaced with the understanding of conversation. Either with ourself or with others. If we're not talking how can anything really be thought out?
On Apr.30.2006 at 09:51 PM