The perception that the brain is all that matters arises from a false idealisation of this organ and its singular significance, called cerebral mystique.
Five themes give rise to a brain-body distinction that tend to elevate the brain above the rest of the natural realm. Abstraction, the tendency to view the brain as an abiotic machine based on different principles from other living entities; Complexification, a vision of the brain as so vastly complicated as to defy analysis or understanding; Compartmentalisation, a view that stresses the localisation of cognitive functions without offering deeper explanations; Bodily isolation, a tendency to see the brain as piloting the body on its own, with minimal influence from biological processes outside the skull, and Autonomy, the view of the brain as self-governing, receptive to environment but always in control. Depictions of the brain as inorganic, hypercomplex, functionally self-contained, and autonomously powerful present the brain as a surrogate for the disembodied soul and feed the attitude that I have termed scientific dualism. The cerebral mystique rests on this attitude. Rejecting it requires accepting the biological basis of the mind on its own terms and witnessing how the brain, body, and environment work together to shape us.
- A more biologically realistic view of our brains and minds is important; in psychology, the mystique fosters a view that the brain is the prime mover of our thoughts and actions; this leads us to overemphasise the role of individuals and underemphasise the role of contexts in a range of cultural phenomena, from criminal justice to creative innovation. Secondly, accepting that our minds have a physical basis relieves us of the traditional tendency to view mental illnesses as moral failings, but recasting psychiatric conditions as brain disorders can be almost as damning to the patients affected. Society tends to view broken brains as less curable than moral flaws, and people thought to have problems with their brains can be subject to greater suspicion as a result.
- ABSTRACTION: Despite growing awareness of brain science, most of us continue to live our lives in denial about the biological reality of our minds. We echo the spirituality of the past when we conceive of the brain as an omnipotent structure that encapsulates everything about our personalities, intellect, and will. The cerebral mystique draws an aritificial distinction between brain and body, and this distinction is upheld by conceiving of the brain as a computer. Scientific dualism is the tendency to draw a distinction between the brain and the body; but this is false. The brain is a part of the body, and does not stand apart from it. By emphasising the electrical aspect of the brain, people downplay the chemical (biological) aspect of the brain; but both chemical and electricity form part of the brain’s mechanisms. Raising some components above others is like choosing which gears in a clock are the most important; they are all needed for a fully functioning brain.
- COMPLEXIFICATION: The brain is certainly complex, but this complexity is overplayed. If each neuron could contact 150 randomly chosen neurons then a single cell would have 101,389 possible configurations, so it’s easy to see where complexity comes in. But not every brain cell is needed in order for normal function to occur. Enormous parts of the brain can be missing, killed off, or removed without compromising essential aspects of personality and thought. So if cerebral volume and number of cells are not the keys to understanding brainpower, what is? Many neuroscientists believe that brains are composed of a set of cell types, defined by the neurochemicals they use and the types of connections they make. If the role of each cell type remains roughly the same in different parts of the brain, then the task of understanding brain function could be dramatically simplified, much as the construction of a city could be understood by grasping how individual buildings are put together. Exhaustive information gathering does not necessarily lead to understanding, and understanding does not necessarily depend on all or even most of the data we could obtain and analyse. To ask that neuroscience studies account for all of the brain’s functions at the level of individual cells is to hold this organ to a special standard of its own. To cloak brains behind complexity is to segregate them from any other organ, which is the brain-body distinction in another form.
- COMPARTMENTALISATION: viewing fMRI scans does nothing to contribute to the idea that we are biological creatures; in the eyes of some religious people, the fMRI machine is a tool for detecting spiritual influences on the matter of the brain, rather than for explaining spirit itself in terms of matter. Unfortunately, it’s a valid interpretations of our shared empirical reality; I completely disagree, but it is coherent. If we use fMRI machines, we can see more or less what we want to. Discovery of specialised brain regions has indubitable biological significance, but critics feel that fMRI overlooks the networked or distributed nature of the brain’s workings. Even if we could associate precisely defined cognitive functions in particular areas of the brain, it would tell us very little if anything about how the brain computes, represents, encodes, or instantiates psychological processes. Contemporary neuroimaging strengthens the mystique of the brain with a combination of scientific lustre, media hype, simple findings, and compatibility with a wide variety of belief systems. fMRI results today are like cartography before the days of authoritative atlases, settled borders and satellite imagery.
- BODILY ISOLATION: people tend to ‘equate’ the brain with the person it supposedly controls. Does the question of whether or not a person can be reduced to his brain boil down to definitions? No, the brain interacts in essential ways with the rest of the body. If part of what makes you you includes you emotional side, your physical abilities, and the decisions you make, then it is scientifically inaccurate to equate yourself to your brain. The mental functions we attribute to the brain are actually functions of the body as a whole. The rest of the body unambiguously guides what we do, how we think, and who we are. Virtually all of our actions depend on the capabilities of our bodies; the violinist Paganini suffered a connective tissue disorder that gave his hands unusual flexibility; what Paganini accomplished and, in a deep sense who he was, were thus inseparable from his physique.
- AUTONOMY: Can we conceive of a handoff point where the deterministic response to environmental input ends and the brain’s cognitive control kicks in? No, our brains are natural entities subject to the universal laws of cause and effect. The sensory organs conduct a ceaseless torrent of neural impulses into our brains each second; the brain has no barrier against this flood of information. Examples: temperature-dependent aggression is more or less hardwired, and it emphasises our lack of freedom to acquire or shed this environmental sensitivity; similarly, depression based on our exposure to light is something over which we have no control. Colours can also act through our sensory systems to influence our behaviour; Solomon Asch’s peer pressure studies show that others are powerful influences on individual beliefs too. A tree opens its leaves toward the light and sways to avoid damage from powerful gusts, but only in a twisted sense could one say that the tree controls its actions. Trees and brains are fundamentally responsive to the world around them; neither presents a firewall against the environment, neither one can be understood apart from the forest of influences that envelops it.
- The cerebral mystique constrains our culture by reducing problems of human behaviour to problems of the brain. In idealising the brain, we overplay its role as a powerful internal determinant of how people act. Conversely, by ignoring the brain, we might overstate the importance of external influences and fail to recognise individual differences. The brain, body, and environment work in tandem to create us. The history of psychology has been a history of debate over whether human behaviour should be analysed from inside our outside the individual, and whether internal or external factors are more important influences in people’s lives. Wundt and James; according to the fathers of modern psychology, the object of study was individual subjective consciousness, and the primary research method was introspection; manipulating the external sensory world was merely a means to an end. Applied psychology, at the turn of the twentieth century cam to be dominated by an essentialist view of human nature - the idea that human capabilities are inborn and immutable. Watson and Skinner changed all this; they believed that stimulus-response relationships could explain most forms of behaviour, even in people, and that conditioning could entrain activities of arbitrary complexity. According to behaviourism, the environment was a far more powerful factor than any internal quality in determining the behaviour of an individual. Chomsky’s excoriation of Skinner helped catalyse a wholesale reorientation of psychology back toward studying processes internal to individuals; the cognitive revolution. After the cognitive revolution; researchers came to equate mental functions with brain processes. The neuroessentialist attitude that our key characteristics are determined by our brains reflects the backlash against behaviourism and its emphasis on the environment; but it encourages a focus on the brain to the exclusion of other factors that influence what people think and do. When it comes to explaining criminal behaviour say, a focus on neuroessentailism or behaviourism are both partially correct; focusing on one makes us exclude the other. What makes someone a drug addict? External social and environmental variables such as peer pressure and weak family structure are well-known risk factors for addiction; but a person stuck in such conditions can hardly be blamed more for his or her situation than a person with brain disease can be blamed for having an illness. What makes someone an outstanding artist or scientist? While few scientists would dispute the notion that brain biology underlies differences in many cognitive abilities, we also know that culture, education, and economic status contribute enormously to the expression of such abilities in creative acts. Similarly, by framing moral processing foremost in neural terms, this serves once again to distract from the importance of environmental and social influences. Ethical decisions are highly dependent on intangible factors, as well as bodily states. Today, we can bring the sparring sides together. With the cognitive rebellion against behaviourism receding into the past, and with growing understanding of the ways in which the brain interacts with its surroundings, we need no longer see the internally and externally weighted views of human nature as necessarily opposed. Our brains are not mysterious beacons, glowing with inner radiance against a dark void. Instead, they are organic prisms that refract the light of the universe back out into itself. It is in the biological milieu of the brain that the inward-looking world of Wundt and today’s neuroessentailists melts without boundary into the extroverted world of Watson and Skinner. They are one and the same.
- The cerebral mystique is part of the reason why mental illnesses remain such a scourge. First, it introduces a stigma of having a ‘broken brain’ Among environment, genetics, and the biology that comes between, the causes of mental illnesses may be just as complex as the mystified brain. A mental illness is not like a broken car; a mental illness is more like a car crash in which several elements conspire; problems with the car, the driver, and the road. Second, by focusing the attention of psychiatric patients on the brain, the equation of mental illness with brain disorders diminishes consideration of potentially effective therapies that do not physically enter the brain. Third, because problems with individual brains are necessarily problems with individual people, an overemphasis on neural underpinnings of mental illness understates the role of environmental and cultural contributions that extend beyond individuals; this makes it seem less urgent for us to discover and correct ambient factors that might increase the prevalence of mental disorders. Mental illness is a multilayered phenomenon: environmental and ultralight factors interact with intrinsic human biology to create both the manifestations and perceptions of disease. The dichotomy between medicine for the brain and talk for the mind is a false one; even if we accept the brain’s central role in our mind and behaviour, it should be easy to understand that a variety of internal and external ways of interacting with the brain could help a troubled individual.