Propaganda and Advertising

I am of the opinion that the ecological crisis will not be solved by a few adjustments to the tax structure or with the invention of a few greener technologies. The unsustainability in my analysis is systemic because it has its roots in the way we think. It might be hackneyed today to insist with Einstein that you cannot solve a problem with the same mind that created it, but it remains true none-the-less. This is why among all the many responses to the ecological crisis that it is possible for an individual to take, it is the development of a contemplative practice that seems most relevant to me. It is also why I think knowing a bit about evolutionary psychology and cognitive neuroscience is very worthwhile.

We live in a culture that is molded and formed by more people educated in the arts of manipulating human behavior than any time in our species history. Ever since Edward Bernayes used crowd psychology and the insights of his uncle Dr. Freud to introduce the new profession of public relations, a steady increase in the effectiveness of mental manipulation techniques has been taking place.

Bernayes Propaganda (1928) is available online. It is almost innocent in its propagandizing for propaganda. This is typical of the material (italics added):And the man or woman who has a music room… will naturally think of buying a piano. It will come to him as his own idea. Under the old salesmanship the manufacturer said to the prospective purchaser, ‘Please buy a piano.’ The new salesmanship has reversed the process and caused the prospective purchaser to say to the manufacturer, ‘Please sell me a piano.'”

Most people are able to get through our education systems completely ignorant about how the emotions work and how emotional triggers are imprints in our nervous systems. The playing field is so uneven. On one side are harassed parents without the security a growing middle class once provided and on the other literally thousands of PhD trained psychologists and psychiatrists working all day, every day to invent and perpetrate manipulation of peoples’ hopes and fears for fun and profit.

I would like to think that learning a bit about evolutionary psychology and cognitive neuroscience might provide some effective tools to level this playing field a bit. Understanding what our deepest drives and fears are, where they come from and how they play out just might help some people to resist the all-to-easy going with the crowd – after all the crowd looks like Lemmings heading for a cliff from the perspective of the ecological critique. Something other than business as usual is needed. In this circumstance anything that can aid us in breaking through the cognitive and emotional straightjackets that are keeping us from responding in ways proportional to the threat could prove to be very valuable.

Those of us who hope to shift values are going to need to be as skilled in presenting how the emperor has no clothes as the advertising industry is in insisting he is wearing the latest fashion.

As in ecology where we strive to work with the direction things want to go, so with the mind. Working skillfully with the mind includes some understanding of what the mind wants, what it was evolved to do. We need to understand why a man who works hard is proud of his ability to buy his wife an SUV for her jaunt down to the grocery store. It is a status symbol sure, and we will have more to say about that by and by, but a more basic evolutionary drive is involved as well. The SUV is a display of his skill as a provider, a display in the real world of things. Those of us who dare to hold out some hope for adjusting society’s values to create and support a more sustainable set of life support systems have to recognize clearly what allies and challenges will greet us along the way.

I use the term advertisers to refer to all the many different professions that use the mass media to increase their own power or profits through the manipulation of human beings’ desire and fear. This includes Madison Avenue but less obviously also encompasses all the PR departments packaging up stories to look like news reporting which our news programs then regurgitate without mentioning the source, placing products from Pepsi to iPads in our young people’s schools side by side with the mandatory watching of their ads every morning on the ‘school news’, the many professionals making a living by arranging product placement in movies and TV shows where the arts of theater have stoked the emotions and primed their audiences for unconscious manipulation, and we should not forget the army of lawyers rewriting text books, history, trails of evidence and working day in, day out to assure their employers have plausible deniability as they ride rough shod over the laws of the land and the customs of decency in communities.

As an aside, there are some books that were so fundamental in shaping my view it is easy to overlook mentioning them. Four Arguments for the Elimination of Television by Jerry Mander is one such book. If you are considering going on a media diet it might be just the ticket. If you are concerned about the state of the “news” the classic study from 1988, which I have yet to see surpassed, comes from the left end of the political spectrum, Manufacturing Consent: The Political Economy of the Mass Media by Edward S. Herman and Noam Chomsky (movie version available). Both are highly recommended. A little study in this area and the knee-jerk response that markets just provide what the buyers want looks astonishingly naïve.

I would be remiss not to mention the many educated people putting their knowledge of psychology to work to saturate an entire generation in realistic murder scenarios, creating for their employers in the video game industry profits in excesses of movies, theaters, rock concerts and all the rest. Yep, twitchy, simulated human-hunting is the number one pastime – a pure co-opting of our nervous systems ability to respond quickly to loud, flashy sensory inputs and hijack the adrenal systems with a graphically detailed threat of violence. Does not sound quite so clever when put that way does it?

The hope mentioned is not entirely unreasonable. I contend that many of the current perversions of our sad and sick polity are the direct result of PR and advertising, in a word – mind manipulations. Once the resources for the non-stop mental bombardment run dry, people may respond to events differently than they do today. One of the areas of our social lives I expect to see considerable changes in is the world of work. Today only the power of advertising’s coupling with capital are able to sustain the perversions of work that render it meaningless and without true value for the great majority of people in the overdeveloped world. Most people want to feel that what they are doing in their many hours of employment is really, truly making a difference in the world, making it a little bit better. When most work is spreadsheets and yet another consumer product, well… By cold-heartedly manipulating our desires and fears, the products billions of years of evolution, advertising is able to offer incitements that are all but irresistible. This is particularly true given the system they create to systematically remove more healthy and viable alternatives.

For example, since the security of the extended family and the productive homestead have been removed as viable options for most people, the need to provide for those we love can be more readily redirected to whatever the needs of the market might be this quarter. There are numerous sociological studies of how the nuclear family was created in a boardroom and sold to society to produce the market required by post-war industrialism. By design, options to consumerism were removed. Just as the food industry learned how the right percentage of salt, fat and sugar can become irresistible while being nutritionally vacuous, so our general incentive system has similarly been perverted by using the same tricks; using our evolved nature’s against us.

Gaining an understanding of our evolutionary inheritance has at least two benefits:

  1. Less shrill judgements of our social and individual inanities.Much of what looks to the ecologically literate as downright insanity – the huge SUV where a small car will do – looks a little less crazy when analyzed from the point of view of evolutionary psychology. Sure the manifestation of caring for loved ones might have been perverted to harmful forms and someday the biosphere violence hidden in such forms will be recognized but that does not change the fact that the intention is noble.
  2. A more realistic assessment of the human condition, both socially and individually.Learning about all the different ways our biological inheritance has expressed itself through numerous cultures breaks through the foremost obstacle to radical change in the industrial world, the one that says that ‘this is just the way the world is.’ No, in fact, it is not. Studying our evolutionary past helps us separate the defining characteristics of our species from the culturally contingent. The same study can also aid us as individuals as we work to make sense of our inner world experiences.

Did you sense an undercurrent of anger in this essay? Particularly in the paragraphs describing the abuse of our minds by the rich and powerful? Such things are tricky. On the one hand the critical analysis gains gravity through its symbiosis with the emotions. Consider the work of Nietzsche; without his passionate style his philosophy would not be what it is at all. Additionally, the reason for allowing an expression of anger is ultimately one of healing. On the other hand, just adding more anger to a world already filled with hate is not doing anyone any good. Anger at injustice is needed if anyone is to try and protect the weak and innocent, yet history teaches us the worst of our human monsters thought they were acting for the right reasons so we need to be careful.

I wanted an illustration to continue our discussion of feelings and their role in individual health and the health of our societies. Feelings are no less a cognitive phenomenon than any other object of consciousness. What sets them apart is their content, for they are first and foremost reports on the physiological state of the body. Damasio explains in Descartes Error they are, “the cognition of our visceral and musculoskeletal state.” He goes on to say that, “Feelings let us mind the body, attentively, as during an emotional state, or faintly, as during a background state.”

Neuroscience is suggesting that the western ideal of a completely emotionless objectivity is actually just a cover of sorts for other agendas. Unfelt abstractions have violated the basic rule, ‘take your body with you.’ There is much here for a contemplative to consider.

The Evolution of Feeling

About two hundred years ago a social movement was coming into its own. The movement touched art,literature, history, and the sciences and has left lasting impressions throughout our society today. The movement was in part a reaction to the industrial revolution and the accompanying rationalization of nature. Where the Age of Enlightenment had left many people hopeful that a rational reorganization of human life and society would lead to ever greener pastures, those in this alternative movement saw in these ideals a cold, calculating reason cut off from the ethics and values, not to mention the messy complexity, of real life. The movement was Romanticism which peaked sometime between 1800 and 1850.

Central to the Romantic Movement was a belief that the authenticity of feelings and emotions brought about the most intense aesthetic experiences and in them a truth deeper than reason alone was glimpsed. They were moved by the beauty of nature as opposed to the classical forms and sought freedom from the urban decay of the time through a return to more medieval norms. Highly valuing spontaneity, the romantics also came to value the hero and the heroic who through their deeper penetrations of intuition and emotion would lead society to a better place.

The Romantic Movement provides fodder for great stories full of heroics, dramatic emotional theatrics and lots of Hollywood glamor. The Romantic Movement, while not quite taking over our popular culture, has come close with its worship of youth, getting in touch with your feelings pop psychology and the exaltation of just do it spontaneity. If it recognizes a dark side of living from the emotions, well that is just the price for genius. The romantic ideals are understandable given the highly engineered, overdeveloped world that confronted humanity two hundred years ago. Even more so today when we worry about nature deficit disorder, the Dionysian ecstasies seem to offer a release from the statutes of our overly programmed and controlled lives. Rock & Roll started promising revolution and ended selling Cadillacs. Why?

The romantic notions are a backhanded compliment to the power of knowledge and the splendor of the knowing intellect above the feeling heart. The romantic is playing with the same guild of story elements, accepting all the same basic premises of the Faustian hero. It is simply a reversal of saviors as we find in Goethe’s great poem when love – the feeling heart – leads the magician out of his ignorant hubris that willingly make deals with the devil himself. Faust had thought that if only he could possess the right knowledge that it would give him the power to mold life to his hedonistic wishes. He was wrong. Knowledge without the heart, without conscience does not deliver what it seems to promise. Though in Goethe treatment Faust seems to save his soul easily enough in the end Marlowe’s may be closer to the truth. Why? Because, as our ancestors knew, the devil is not merciful to those he dupes.

The deals with the devil the industrialized world has been willing to make run the gamut from nuclear waste generating activities to genetically modified crops. Pushing science to find the knowledge that has practical applications is our society’s defining characteristic. Those of us interested in what more sane ways of living might arise after the collapse of industrial civilization and helping those who suffer as the slow collapse continues should understand the dominant story. Put simply, there are two approaches to acquiring knowledge and each has its place. In one, the Faustian, knowledge is power and it is sought to aid us in remaking the world as we wish or need it to be for our own survival. The other approach seeks knowledge of the world in itself, to know it more thoroughly so that we can adjust ourselves to its reality. They are the knowings of science and love. As the Francis Bacon metaphors reveal embarrassingly clearly the Faustian approach seeks to storm the castle, put nature on the rack and force her to give up her secrets. The other approach was championed by those who insist that the observation of living wholes in their environmental context, in a word systems thinking, is primary and the dissection of dead parts is secondary.

The contemplative learns storming the gates of heaven is ultimately less productive than waiting on the light, seducing the lord to come into your heart by patiently nurturing virtue. What the Romantics help us see more clearly is how the divisions we place between these forms of knowing are artificial, a construct of our cultural imagination. Those deals with the devil made using the cold hard reason – ‘it’s just business you know’ – we are now coming to understand include very large emotional elements as they eat up what remains of our viable-for-humans planetary systems.

The whole dichotomy between heart and head that the western intellectual traditions had been wrestling with is cast here on the level of social movements. In this view the dark, animal emotions are the chthonic roots of our bodily form while the intellect soars in a realm of Platonic purity. By these lights the human experience is one of struggle between these two contending forces. The mind and body are seen as worlds apart instead of an integrated whole. Descartes captured the essence of this point of view when he wrote, “even if body were not, the soul would not cease to be what it is.” Neuroscientist Anthony Damasio has called this Descartes Error and in a book of the same name lays out the current understanding of the brain-body connection. The state of the art of neuroscience has been finding the feeling element is hardly cut off from our reasoning, quite the contrary in fact. The highest level goals in the brain are set by the emotions and proper reasoning is simply not possible without their aid.

The triune brain theory we discussed last week reproduced this whole heart and head dichotomy in a characteristically dark twentieth century way – the role of the heart is played by the reptile. The theory is basically saying the neocortex is where the moral ideals of justice and the powers of reason reside but sadly they are mixed up with the selfish and violent reptilian brain stem, our inescapable fallen nature. The hot, irrational impulses follow biology while the intellect brings us the gifts of civilization. Since the Romantic Movement it has become very common to assume the emotions and the intellect are in separate realms. Steven Pinker points out the dichotomy has also influenced scientific thought in “the id and the superego, biological drives and cultural norms, right and left hemispheres, limbic and cerebral cortex and the evolutionary baggage of our animal ancestors and the general intelligence that propelled us to civilization.”

This triune brain theory rests on a few hypotheses which have not turned out to be the case. First it appeals to the astonishingly conservative power evolution sometimes displays when it keeps fundamental life systems unchanged for billions of years. The features and functions of the brain stem are assumed to have been conserved. The theory assumes the brain stem and its accompanying emotions are hard to reprogram. No doubt there is some degree of conservation around the life support systems found in these regions of the brain but the bulk of these regions seem to have been evolved in step with the development of the neocortex. One example is that the hypothalamus, a member of the older layers, grew in step with the growth of the neocortex. It is also evident that the emotions are quite susceptible to changes and manipulations by evolutionary growth as witnessed in the different dispositions of Pit Bulls and Saint Bernards. Finally modern research indicates that the cerebral cortex has taken over many, if not most sensory and motor functions.

The second hypothesis the triune brain theory assumes is that the neocortex rides piggyback on the older brain regions. Modern investigations have shown that this is not the case, that circuits and signals run both directions. The almond shaped brain module known as the amygdala is well studied. It encompasses many of the circuits that influence the emotions. It receives signals from both the brain stem, as when the body perceives a loud noise and a simple time sensitive message needs to be sent and it receives signals from the cerebral cortex, where sometimes very complex signals are generated from our most refined abstractions. It is well known how thoughts can set off the emotions. Think, for example, of the Dear John letter. Additionally, the emotions help the cerebral cortex as it plots for courtship, escape, revenge and more.

The triune brain theory “promotes the belief that emotions are animal legacies” as Steven Pinker has it in How the Mind Works. The modern view is otherwise. Pinker explains it recognizes the emotions are well designed brain modules that work “in harmony with the intellect and are indispensable to the functioning of the whole mind. The problem with emotions is not that they are untamed natural forces or vestiges of our animal past; it is that they were designed to propagate copies of the genes that built them rather than to promote happiness, wisdom or moral values.”

So if the triune brain model is of limited usefulness what replaces it? There have been many alternatives proffered for why the human brain evolved as it did. Two of the ones on my shelves most impressed me. The first is The Mating Mind, How Sexual Choice Shaped the Evolution of Human Nature by Geoffrey Miller. He argues that our consciousness, creativity, art, and morality were sexual attractors, not just side effects of a larger brain. The other title is The Runaway Brain: The Evolution of Human Uniqueness by Christopher Wills.  He contends that there is a positive feedback loop between human culture and the genes that control the growth and evolution of the brain. Both books are well written and researched and together help overcome the temptation to latch onto a single theory as the be all and end all of the brain’s evolutionary story.

With these couple of recommendations for those who are interested in delving deeper into this subject our conversation is going to shift to what we can learn about our minds from the modern neurosciences. There has been a revolution in our tools for investigating this openly fantastic and complex bit of organic matter we call our brains and nervous systems. The field is enormous. In the coming weeks I hope to share some of what has struck me as the most relevant highlights of the findings for those of us with a propensity for contemplative practices and a heartfelt concern for the ecological health of our planet. There are a number of fertile collaborations between cognitive science and the neurosciences to guide us on our way. Remember the goal of our investigations is a more complete appreciation of the role of compassion in human affairs.

We have already taken our first step along these lines. In Descartes Error Damasio mentions the neurological facts that any theory of self and consciousness needs to be able to take into account. These are among them:

a) Consciousness and wakefulness as well as consciousness and low-level attention can be separated.
b) Consciousness and emotion are not separable.

Concerning point b) Damasio notes this is a “most revealing” fact. Indeed.

The Evolution of Thought

“Of all animals man has the largest brain in proportion to his size.”
Parts of Animals, Aristotle


Do you ever wake up sensing nearness?

Unlike the Hindu and Buddhist cultures the mythic cosmologies of the West lack a sense of nearness of the divine. In the East the common greeting is in Anjali; the hands are brought to the heart with a small bow in recognition of the divine in the person you are greeting. In this worldview every sentient being carries a spark of the cosmic, the ultimate.

I find this interesting because in my view the most astonishing features of existence are not the far reaches of space or the mind numbing expanse of the universe as a whole. The most astonishing thing is that all this enormous planetary and stellar matter is so very simple in structure compared to organic chemistries. We find the most complex organization of molecules, if you will, anywhere in the universe, to be right here on planet earth. An interesting contemplation is to sense how all the voluminous yet simple matter in our solar system through its gravitational participation is a necessary support of the rich bounty of earth’s fruitfulness. After all, if any one thing was different, all things would be different. That is what it is to be in a universe of total interdependence, a universe like ours.

If we then ask where we find the pinnacle of organizational complexity among organic matter, the brain is said to have no equal. As ‘possessors’ of said brains we are also familiar with their ability to share their thoughts, like we are doing right now.  In Anjali the greeting ritual lifts social interactions to a sacred place, one recognizing something like the uniqueness we find in the grey matter. ‘Hello expression of complexity flowering in the universe, I greet you.’ I think it better captures the dignity of an encounter in which the mystery of my awareness touches the mystery of your awareness. It sees in individuals something more than social status and bank accounts.

The contemplative has taken their vehicle to be the mind, the psyche, the soul. In Tibetan Buddhism there is the tradition of the three year retreat. Like the traditional Anjali  this too is interesting. It is as if this culture has a tradition of putting the human mind on the altar in recognition of its actual cosmic value. In three years, three months, and three days it is said the yogi can map the mind, familiarize themselves with its outer reaches and in some ultimately inexpressible way, master non-dual awareness. As children of the space age it is easy to feel the real action in the universe is happening somewhere else. With Anjali and retreat traditions of both the East and West we are being asked to reconsider that, invited to consider that we may be looking through the wrong end of the telescope.

Where did these brains come from? How were they made? How do they work? The first and second questions get a rather satisfying answer from evolutionary studies and we will examine them a bit momentarily. The third question is less amicable to the desire for settled answers, though I will suggest modern neuroscience and cognitive science have advanced far enough to send a few popular yet troublingly misconceived ideas out to pasture.

So what is this mind? To begin the story of where brains come from we need to start with the evolution of the nervous system. Whatever else nervous tissue might be it is certainly a means of sending signals. With signals comes information. What is the selective advantage of additional signal processing?

Learning to adapt to the environment through the accumulation of beneficial genetic mutations is a very slow process by our standards. It takes millions of years for speciation to develop and perhaps hundreds of thousands of years for smaller adaptations to establish themselves. In this environment a premium is placed on any developments that enhance the ability of an organism to respond to their specific environment more skillfully.

Early animals evolved numerous sensory mechanisms for reading their environment. The senses that could pick up environmental clues from a distance carried the highest premium of all. To avoid a mortal threat or find a mate, sight and hearing encompass far more of the environment than taste and smell. This was an environment in which the dynamics of predator and prey drove the selection of the fittest for many, though not all, animal species. It is not hard to understand how even the slightest insight into the state of your world would give you an edge; one percent of an eye, when it is one hundred percent more eye than your neighbors have, is of revolutionary importance.

The earliest animals did not have nervous systems. This limited the amount of information about themselves and their environments they were able to make use of. The development of the nervous system took the ball game to a whole new level. Both the speed by which information travels increases and the information density increases by orders of magnitude. The speed comes because the nervous tissue is able to use electrical impulses instead of chemical diffusion for communications. The density comes due to the many connections possible between neurons due to their dendrite structures.

In Dragons of Eden Carl Sagan presented the following graphic as a way of capturing the information explosion that occurred with the evolution of the nervous system. Genetic information tops out (10 to the 10th) but the human brain information content continues an estimated three more orders of magnitude (10 to the 13th).

BrainGeneticInfo2The evolution of nervous tissue would prove to be wildly successful. “Somewhere in the steaming jungles of the Carboniferous Period there emerged an organism that for the first time in the history of the world had more information in its brains than in its genes.”

Another defining characteristic of the human brain is that it has more mass for its body weight than any other animal on earth. Next in line are the dolphins.  This is captured in the brain to body weight ratio. When this is charted Sagan observes the emergence of mammals and primates “was accompanied by major bursts in brain evolution.”

BodyBrainMassRatioSteven Pinker points out the human brain was considerably re-engineered from the primate brain. “Our brains are about three times too big for a generic monkey or ape of our body size. The inflation is accompanied by prolonging fetal brain growth for a year after birth. If our bodies grew proportionally during that period, we would be ten feet tall and weigh half a ton.”

So where did this path to the brain begin? Last week’s post ended with a look at the segmented nerve cord budding into three distinct areas which become the hindbrain, midbrain and forebrain. Remember, we have this DNA expressing itself through the use of its own regulatory genes. The topological mapping of this evo-devo expression in the nerve cord is segmented at one end into these three distinct regions. We can track these regions throughout the vertebrates’ exploration of the DNA’s design space.

The brain of a fish, which isn’t much, is chiefly midbrain with a tiny forebrain. Reptiles and amphibians are the other way around. Another graphic from the same work shows this by illustrating a perch and a toad. Dr. Sagan also included the development of the nerve cord in a reptile, bird and mammal.

SaganSchematicIt is easy to see how the tinkering with the fundamental components has taken place. Can you hear the three part chord echoing through the long centuries?

What we did not know at the time the Sagan book was written is how the regulatory genes actually work. Today there is a rather clear comprehension of exactly which genes are involved. It is an impressive example of information being conserved across a wide spectrum of phenotypes.  In From DNA to Diversity (first edition) the authors summarize the role of the three regulatory genes across the three regions this way:

DNAToDiversityVertBrainFrom the trail of clues left in the DNA evidence the subdivision of the vertebrate brain into fore, mid and hindbrains came before the mammalian neocortex. The last common ancestor had localized, discrete domains of these regulatory gene expressions.

From observation such as these a model of the brain as a triune structure was developed. In this model of the human brain the later parts are added to those that had evolved earlier. The argument for the model relies on the fact that we find some biological elements conserved through evolutionary changes. It stands to reason that mutations that tinker with some of the deepest features of life are likely to be lethal. In this model of brain evolution the early brain parts are left basically undisturbed while the later parts are added.

The oldest strata is said to be the reptilian brain or the R-Complex, to use Paul MacLean’s term. He also refers to a neural chassis consisting of the midbrain and hindbrain. These contain the neural circuitry for reproduction, respiration, heart rate, blood circulation and other systems necessary for self-preservation. They evolved several hundred million years ago. Surrounding that is the limbic cortex which is said to be the seat of the emotions and is associated with the caregiving of the young we find in the mammals. It likely evolved more than one hundred and fifty million years ago. Finally there is the outermost layer consisting of the neocortex which becomes ever more elaborate in the more advanced mammals. It is believed to have evolved tens of millions of years ago, though a leap in its complexity occurred just a few million years ago with the emergence of humans.

In this model the brain consists of three very different modalities, only one of which is graced with speech. Each has its own mentality, intelligence, sense of space and time and its own memory and motor functions. The distribution of the neurotransmitters dopamine and cholinesterase are also found to be strikingly different in each section. We could say the R-Complex is performing dinosaur functions and the limbic cortex is “thinking the thoughts of pumas and ground sloths.”

Culturally we recognize our lower animal nature as reptile-like when we speak of the ‘cold blooded killer’ or when Machiavelli advises his Prince “knowingly to adopt the beast.” It is not hard to recognize the aggressive, territorial, ritualistic behaviors and rigid social hierarchies of the reptiles within our politics of empires and armies.

Care of the young is mostly found among birds and mammals though there are exceptions among the social insects. The development of the limbic cortex is thought to have brought with it these altruistic behaviors. In this model love was invented by the mammals.

With the arrival of the neocortex comes the ability to plan, to think ahead and to consider options. Instead of a potential meal relying only on instinctual jumping or zigging and zagging to escape their predator threat, an animal equipped with a neocortex can also look for an escape route unique to the exact environment in which the confrontation is occurring.

There is something very familiar to western ways of thinking about our humanity in this triune brain model. It is not hard to see Freud’s id, ego and superego in its threefold classification scheme. More anciently, in Phaedrus Plato likened a human being to a chariot being drawn by a set of black and white horses. Popularizers of the triune brain theory pointed out it mapped well to this Platonic insight when the chariot is likened to the neural chassis, the horses to the R-Complex and limbic systems and the neocortex to the charioteer.

The triune brain seems a fairly good model of both brain physiology and human experience. The model is quite popular, quite well known, almost as if it was a theory made to order, one that confirms our expectations. This should make us wary.

Advances in neuroscience have shown the triune model of the brain to be of limited usefulness, even misleading. Just why and what we have found to be the case instead is what we will look at next week.

Evolutionary Information

Do you wake up sensing vastness?

Compared to the Hindu and Buddhist cultures, the mythic cosmologies of the West lack a sense of vastness until our sciences supplied them. In the East images like Indra’s Net have been used to illustrate existence by likening it to a vast net of diamonds, all reflecting one another just as mirrors in a fun house, where every diamond is a whole universe unto itself. It is a common eastern understanding of existence that whole universes are endlessly born and die in vast cosmological cycles. When your eyes blinked open this morning, according to this way of interpreting the experience of being alive and awake, surrounded by mystery, you found yourself again consciously aware in the midst of this vastness of both time and space. The vastness exceeds human thought and imagination in a way not that dissimilar to the vastness we in the West can appropriate by studying astronomy and the ecology of deep time.

I don’t think we properly appreciate the preciousness of what we are putting at risk. A truly heart-felt gratitude for the biosphere and all it offers us requires a sense of just how vast the biological deep time of our planetary evolution actually is. It is important to try and understand viscerally that of the approximately 4 billion years in which life has been evolving, approximately 3 billion of those years were taken up with the evolution of microorganisms, which are still by far the most dominant life form on the planet. It is important to try and understand viscerally that more than 99% of all species that have ever lived are currently extinct, that all the overwhelmingly diverse biological forms we see about us today represent nothing more than the slightest tip of the iceberg.

I see the study of life in the fields of evolution and ecology somewhat like the symbols in the Tarot deck. All the symbols are there and the terms are accurate but like the neophytes yet to be initiated we are prone to misunderstand what they mean. We are blind to the real implications of these symbol systems, these sciences, for our lives. Contemplation is our initiatory methodology by which the understandings of the adepts can be acquired. Less poetically: if you really get it, you live it. Climate change is not just a political football and green marketing opportunities. The eco-crises are not just for our entertainment. Something much more powerful is going on here for our species, something involving planet wide forces across deep time and its dream time. Dream time, as I understand it, is like Jung’s collective unconscious or our shared consciousness, or the summation of all that is conscious.  Something like this exists emergent among us since human consciousness is not separate and isolated from the rest of life’s awareness in which it is rooted. In order to tune into that, the small worldview of consumerism needs to be left far, far behind. The heart is noble, yet it remains a choice for each and every one of us whether or not to heed the wakeup call in the age of limits. With evolution and ecology we are in the temple’s Holy of Holies where it would be wise to take off our shoes, for we are treading on sacred ground.

We have been looking into the ins and outs of evolutionary mechanisms the past few weeks. The recommended contemplations have been around the extent of evolution’s reach, its all-encompassing nature. This has been offered to try and provide us with some felt sense of just how vast the living network of our planetary biosphere really is. Earlier we looked at how easy it is for our minds to form abstractions and generalizations which while helpful in some contexts also blind us to the actual. In nature we find everything is unique and at least a little bit different than its neighbor; every blade of grass, every leaf, every mouse and every elephant. These are the differences that are all important from the evolutionary perspective. To really appreciate what is involved requires, it seems to me, a concomitant appreciation of the vastness of the forms and forces involved. Otherwise our understanding is threatened by an overly simple generalization of the subject which leaves the impression of the biosphere as an unthinking machine.

The metaphor of the biosphere as a machine is a popular one in our culture; it all has to exist for some purpose like a machine and was designed for achieving that purpose like a machine and uses energy to engage flows of inputs to produce transformed outputs like a machine. Enamored as we are with gadgets and machines, when we encounter something like the DNA molecule our default interpretive context for it naturally involves machine-like characteristics. We see abstractions and generalizations where in fact the products are all concrete and specific; there is no turtle, there is only this turtle here, and that turtle over there, indeed it is specific, individual turtles all the way down. Because we see abstractions instead of the particulars which are the abstractions referents these machine like characteristics seem dominant among the evolutionary and ecological processes.

That organisms are the antithesis of machines is of course a bit of a problem for these models. Machines do not learn nor reproduce yet these are the very characteristics defining evolution. Machines do not grow and move through lifecycle stages yet this is the very characteristics defining evolutionary development, evo-devo. With these antimonies in mind what, we might ask, is the reason a machine-like model has been dominant in the biological fields? The answer is doubtless many faceted and complex. The cynic will point out how a model of nature as machine holds out the promise of mankind one day completely understanding and controlling it. Knowledge is power in this model and a machine is theoretically transparent to the understanding. There is some truth in that analysis and it is worth developing. However, there is another similarity I propose is more relevant, namely computing. To appreciate it will require a bit of history.

Darwin’s 1859 publication came on the heels of what historians refer to as the industrial revolution. The discovery of evolution by natural selection occurred at a time and place where applying scientific insight through the technological design of machinery had thoroughly transformed individual lives, societies and both the urban and rural environments in which they found themselves. When Origin of the Species was published there was no clear understanding of how descent with modification happened in living things, only that undeniably it did. By the time the actual mechanism of genetic inheritance was discovered and the structure of the DNA molecule was mapped in the 1950s, the cutting edge of technological development was learning how to produce computers – information processing machines. Here is where I see a metaphorical similarity between machine and DNA processes. The amino acid pairs might be similar to Lego-like building blocks familiar to numerous technologies but it is with the information processing machines that we encounter an almost uncanny alignment of biology and engineering. From the bacterial chemical exchanges to the pulse patterns of the nerve cord we find systems that embody information and assist its exchange have been favored by evolution throughout the animal kingdom.

The evolution of eyes, wings, lungs, hands, skin, skeletal joints, and all the other features of animal physiology are fascinating and full of lessons but I want to focus our attention around the evolution of the nervous system, the information carrying stratum par excellence.PurkinjeCellThe basis of the nervous system is the neuron which is typically formed with a set of branches at one end called its dendrites, a cell body and a single axon. The dendrite tree extends a few hundred micrometers as it branches, whereas the axon of a single neuron cell can extend up to a meter in the human body. There are families of neurons specialized as sensory neurons, motor neurons and interneurons or those which connect neurons together as we find particularly in the brain and spinal cord.

The neuron is a cell specialized to transmit an action potential. The evolution of the action potential occurred in the single celled eukaryotes as they found a quick electrical pulse along their membrane a useful way to activate biochemical pathways within the cell. The details of the voltage gated ion channels which produce the action potential need not concern us here, though it is helpful to know there are two main types. In one a sodium channel is used and the action potential lasts under a millisecond and in the second a calcium channel is used and its action potentials can last 100 milliseconds or even longer. These nerve impulses or spikes travel the length of the neuron’s single axon. The interneurons typically respond to the spike by releasing neurotransmitters which in turn excite neighboring neuron’s dendrites. In this way a signal is sent across the synaptic gap and communication occurs.

The Jellyfish and similar animals use a set of neuron cells structured as a web, a nerve net. With this relatively primitive structure they are able to absorb sensory inputs, process those signals and use them to activate muscles and other physiological processes.  Already in the nerve net the fundamental capability of the nervous system is beautifully illustrated. They provide a window on the world through their ability to sense visual, chemical, tactile, taste and odor signals. There is something very magical about how the senses bridge the inner and outer worlds. These nerve nets also provide the orchestration required for numerous life support systems, from muscle contractions to the production of insulin.

Tinkering with the nerve net over deep time resulted in the development of the nerve cord, what in humans is expressed as the spinal column. With the introduction of a centralizing feature body forms take on the bilateral symmetry that is found extensively throughout the animal kingdom. The phenotype in which the left and right sides mirror each other is constructed around a tube running mouth to anus and a nerve cord with a ganglion or enlargement at each of the body segments.

Bilateral animals can be divided into two camps depending on how this nerve cord is positioned during the early stages of their embryonic development. Early evo-devo expressing the DNA information will position the nerve cord either on the front or backside of the trunk. Insects for example have the nerve cord running along the ventral midline whereas vertebrates have it running along the dorsal midline. Basically the segmented body arrangement is flipped over so where one has the cord running along the back, the other has it running along the belly. There are numerous other features of these two groups’ phenotypes that are also inverted.

HoxGeneRemember the body segments from the fruit fly we saw in this picture when we were discussing evo-devo? The segmented body plan along the trunk of an animal is laid out in the nerve cord through a series of narrow bands. The body innervation pattern follows those segmentations. It is not at all dissimilar to the classic image of the yogic chakra system with the chakras corresponding to the major ganglions.

nadisThe top three segments of the segmented body plan laid out in the nerve cord are what become in modern humans the forebrain, midbrain and hindbrain. We will begin looking into that a bit next week.

What Evolves

When we ask what evolves we come to one of those subjects where the contemplative’s unique experiential insight trumps a more academic approach. The contemplative does not propose new terms; the difference is in how the meditative states uncover how it feels to relate to what those terms refer to.

DNA_StructureThe academic explanation of what evolves is, for the most part, the genetic code. Each species is carrying their signature bodily form and the DNA from which those forms have developed. The evolutionary development, evo-devo, was touched on earlier. The development process is one in which the DNA codes for how proteins will be created and those in turn become the building blocks of our body, speech and mind. The DNA holds the recipes for the liver, heart, lungs, stomach, brain, eyeballs and all the rest. The blueprint is the genetic code but the code alone is not sufficient to actualize any of the genetic features. The most recent scientific view is nuanced. It recognizes that the code specifies what to make – the form the proteins will take – yet a larger percentage of the DNA consists of genes and their regulatory elements. This equally important characteristic controls how the main production is scheduled, how the processes work together, get organized and become specialized for the task at hand. The study of evo-devo has taught us how the expression of the DNA depends on the environment it finds itself in. Ecology, the study of life in its environment, extends its reach even here. Part of the DNA environment will be the chemical coordinators created by the DNA itself. These are chemical products that are used to regulate when other DNA sequences will become active, effectively managing the production of the biological building blocks.

The subject of genetics has become commonplace in our news and movies. Most educated people have at least a basic grasp of how the amino acid base pairs form the double spiral shape of the DNA molecule. The standout feature of this molecule is its ability to duplicate itself by a process of unzipping one spiral from the other. The all-important environment the molecule finds itself in then supplies the necessary amino acids to complete the pairing process. This creates two double spirals where there was one before. Due to the strict rules governing how the amino acids pairing will take place the second one is a nearly perfect duplicate of the first. The information structure retains its integrity over generations. The luck accumulates.

What is interesting to consider is just where exactly the influence of these genetic operations end. If we can break out of our habitual knowledge of genetics and really contemplate what is being signified behind all the terms and models, the reality of living things becomes magical. Consider this very moment: this little slice of time we label now contains every currently living organism’s vibrational molecular signature in a never stopping dynamic of building, tearing down and transforming simultaneously every biochemical pathway needed to sustain life into the next moment. When we think of DNA the mind tends to isolate a double spiral model but with this thought experiment we are trying to develop an experience of just how all pervasive the magic molecule of life really is. From the grasses in the field to the tip of your nose, if it is organic matter it contains earth’s DNA: the same amino base pairs, the same replication mechanic, and the same dependency on its environment to regulate its expression is found in each and every living thing on this planet. It is the ultimate proof of a shared ancestry, a shared life.

That is one direction we can take to break out of our habitual hoh-hum understanding of genetics: sense its all pervasiveness. Another is to appreciate how the DNA since its moment of inception has never known a moment of death. Yes every vehicle which bears it is mortal through and through but as it itself propagates through the germ cells generation after generation its activities never cease.

The Cambrian explosion is a very educational illustration of just how shared our ancestory is. At that time, roughly 550 million years ago, the trick of DNA replication with slight variations seems to have met just the right conditions to explode into an amazing variety of body forms the likes of which had never been seen before or since.

Burgess500WEBIn Wonderful Life Stephen Gould discusses these Cambrian body forms, known as an animal’s phenotype, at length. It was as if the constraint around DNA’s expression was loosed and for roughly 30 million years it was anything goes at the morphology rodeo. Numerous phenotypes were tried which are no longer around. There were barrel shaped creatures that would not be out of place in H. P. Lovecraft’s Mountains of Madness. The spiny genus known as Hallucigenia hosted skinny legs with claws but, bizarrely, above each leg a rigid cone shaped spine erupted. The Opabinia was a soft body animal which hosted five eyes and a mouth that faced backwards along with a proboscis used, it is assumed, to get food into its mouth. We do not find ourselves in a world filled with descendants of the Hallucigenia or the Opabinia. These were tried but discarded.

All over the planet we are confronted with endless variety of phenotypes yet we find only so many limbs, heads, and eyes – a family of phenotypes we immediately recognize as earth life. It takes the study of something like the Cambrian explosion to appreciate just how arbitrary and contingent these details really are. The pictures of the organisms from the Cambrian era leave us with a sense of viewing alien forms; they lack the signature shapes we intuitively associate with living things on this planet. The phenotype provides another way to break through our habitual model when considering the reality of our experience in the light of genetics.

We have touched on evo-devo, the way in which the genetic code expresses itself through the development of the embryo, fetus and child. With the creation of the body the reach of the genes would seem to be at its end, but is it? Just what is this organism so wonderfully built?

When examining an organism reductive analysis can find aggregates of collections, say all the liver cells in the liver or all the brain cells in the hypothalamus. Looking the other direction, holistically putting all the parts together, we find numerous emergent properties. These are those properties that cannot be found among the parts but only exist as a characteristic of the whole. Among the most important emergent properties of living things are an organism’s behaviors. Among mammals for example, how exactly individuals of a particular species will go about foraging for food is an emergent property of its digestive system, emotional drive system acting on hunger, the homeostasis system maintaining bodily health, muscular systems controlling movement, sensory awareness guiding the movements and some form of an awareness system that can deal with the immediate feedback from the environment it encounters through the senses. This awareness needs to be able to make adjustments and adaptations to stay on track for achieving whatever feeding goal the organism has set out for itself in an ever changing environment. Now ask yourself, ultimately, where did all these systems come from? You will find their roots in the genetic code.

The full blown evolutionary view sees an animal’s many behaviors – and the internal experiences that generate them – and asses them all as an extended phenotype. The beaver’s dam is as much a part of the beaver DNA as is the beaver’s tail, to use the example from The Extended Phenotype where Richard Dawkins first introduced the idea. Everything we call instinctual behavior falls easily into the definition of the extended phenotype. After all, sticking with the example of mammalian species, the nervous system and brain are also products of the genetic code’s evo-devo procedures. The very nexus from which behavior originates is included in the scope of the intelligence we find in the genetic code.

It is indeed interesting to consider just where exactly the influences of these genetic operations end. When we see spiders create a web it is easy to attribute the skill displayed to the magic of instinctual learning. We do not doubt that the information in the genetic code that formed the spider’s phenotype included the details needed to orchestrate the building of the web. What happens when we turn our attention to ourselves?

BrocasAreaSmallThere are organs in the mind and each one is as thoroughly under the control of the evo-devo process as are our fingers and toes. The brain’s ‘organs’ are specialized areas, modules dedicated to particular information processing tasks. Language acquisition depends on these types of specialized areas and shows many indications of being influenced by genetic control. Language, its use and understanding, is associated with the brain’s Broca area whereas written and spoken language is associated with the Wernicke area. Research has shown that human children use these brain centers to learn language. It does not matter which language children are exposed to though it does matter that the language is used to interact with the child. It is as if our brain physiology has primed us to learn language which the human social environment then supplies.

Research has also shown that there is an optimal time for this exposure to occur if the child is going to become fluent in language use. This period of heightened language acquisition ends around adolescence. If a child has not been properly exposed to an environment conducive to learning language by that time, that individual will never be able to become as competent in the use of language as a native speaker. Developmental psychologists have discovered other critical periods where proper environmental inputs are required if the individual is to develop into a healthy adult. All these details are features of an ongoing evo-devo process: careful scheduling of events and adjusting exactly how biological structures will be fashioned through responding to environmental feedback.

Consider again the all-pervasive nature of the DNA molecule but now include the extended phenotype – the flower striving to be sexy for the bee, the bee’s dance communicating direction to the pollen feast and all the other activities of this buzzing, bustling world. Turn the contemplative eye within and spend some time with the dynamics of your internal world. How does learning happen? How can I think ‘my’ thoughts when I have to think them in ‘your’ language? How is it that that which seems most individual about my experience of being alive is so often one of the most collective features of being human? My fear and love, my hope and hurt, my laughter and lust all strike me as exquisitely unique. Yet, in these deepest wells of self, is there not a hint of selflessness? Is it not true that there is a sense in which, as has been mentioned before, life lives us?