Evolutionary qualia suggests our inner world-simulations are not merely painted with different colors, but have different soundtracks, aesthetics, narrative themes, and walk-on character status. Cilantro tasting like soap to ~10% of people is merely the canary in the coal-mine. Our differences in qualia (and consciousness more broadly) probably involve modes of experience you and I don’t even know exist.
Excerpt from Global Brain (2000) by Howard Bloom (Pgs. 143 – 146). [Emphasis mine]
Our brains differ as much as our bodies. Indeed, they may differ more. One part of the brain, the anterior commissure […] varies seven-fold in area between one person and the next. Another part, the massa intermedia […], is not found at all in one in four people. The primary visual cortex can vary three-fold in area. Something called our amygdala (it is responsible for our fears and loves) can vary two-fold in volume – as can something called our hippocampus (involved in memory). Most surprisingly, our cerebral cortex varies in non-learning impaired people nearly two-fold in volume.
– Dr. John Robert Skoyles
Thanks to Plato, we have what purport to be records of the conversations of a human Cuisinart of concepts, an eclectic sage whose roughly fifty-year-long intellectual life bracketed the Periclean Golden Age (443-429 B.C.). This all-purpose conceptual chopper and blender was that son of a socially high-placed family, Socrates. Experts and neophytes agree that it’s impossible to tell how many of the words Plato ascribes to this self-appointed gadfly were authentic and how many were simply Plato’s way of getting his own notions into the public eye. But one thing is generally accepted as accurate – the names of the folks from whom Socrates extracted opinions before shredding them with the quiz mastering which now bears his name (Socratic dialogue). The cast of characters palavering with Socrates in Plato’s Dialogs, says learned reasoning, was too well known in Athens for Plato to have fudged.
Just who were the fonts of learned conversation whose wisdom Socrates whipped and whirled? Socrates’ interlocutors were frequently famous thinkers from distant cities, each of which specialized in a different manner of plucking goods from its surroundings and injecting them into the circulatory system through which the trade of the Mediterranean and the Black Sea swirled. Socrates was a student of Anaxagoras, who came from the Ionian city of Clazomenae on the coast of today’s Turkey. He was also a disciple of Archelaus, another Ionian import. The Socratic dialogues Plato “chronicled” included those with Protagoras from the Balkan city of Abdera, Hippias from Peloponnesian Elis, Parmenides from Italy’s Elea, and Gorgias from Sicily’s Leontini. Each visiting intellect had been shaped by contact with a unique group of surrounding tribes, and by the exigencies imposed on city structure, domestic habit, and vested interest by distinctive forms of enterprise. One result: each arrival presented a philosophy which appealed to a very different configuration of the human mind.
To understand how philosophy couples with the mind’s biology, let’s track the complex adaptive system’s best-concealed constituent to its hiding place. The five elements of the complex adaptive system are conformity enforcers, diversity generators, inner-judges, resources shifters, and intergroup tournaments. Inner-judges may be the most unusual of the crew, for they are physiological built-ins which work deep inside the body to transform a bacterium, a lizard, a baboon, a me, or a you into a module of a larger learning machine. The basic rule of learning machines is one we’ve already seen: turn on the juice to components which have a grip on the problem at hand and turn off the power to those components which just can’t seem to understand. Inner-judges help decide whether the components in which they reside will be enriched or will be denied, then they aid in carrying out the sentence. The irony is that these evaluators, prize givers, and executioners are built into their victims biologically. On the microlevel, inner-judges work through “programmed cell death” – apoptosis – a molecular chain reaction deep within the genes which ends in cellular suicide. In higher animals the inner-judges dole out interior punishments which range from overdoses of stress hormones to emotional miseries. Or they grant internal bonuses of zest and confidence to those of us fulfilling our group’s needs.
When we feel like kicking ourselves around the block or curling up and disappearing, our condemnation comes from inner-judges like guilt and shame. What’s a good deal harder to realize is that behind the scenes our inner-judges sicken us and dumb us down quite literally. If they sense we’re a drag on the collective intelligence, inner-judges down shift our immune system and neurochemically cloud our ability to perceive. They induce a narcotic haze by swamping our system with endorphins, the body’s self-produced equivalent of morphine*. And they flood us with glucocorticoids which kill off both brain cells and lymphocytes – critical cells in our fight against disease.
Inner-judges measure our contribution to the social learning machine by two yardsticks: (1) our personal sense of mastery; and (2) the hints we get from those around us telling us whether they want us eagerly or couldn’t care less if we disappeared like a blackhead from the face of decent society.
Mastery is a useful gauge. It measures whether we’re coping with the trials tossed our way, and whether our example can help steer others in their trip through choppy seas. Popularity is an equally practical yardstick. It measures the extent to which we’re feeding others’ physical, organizational, and/or emotional needs.
Nestled deep within our neuroendocrine complex, inner-judges operate on a sliding scale. By adjusting our mix of neurotransmitters like serotonin, dopamine, norepinephrine, and acetylcholine, or the balance between the gloomy right and sunny left side of the brain, they shift us from fear to daring, from misery to happiness, from grouchiness to charm, from timid silence to expansive speech, from deflation to elation, from pain to ecstasy, from confusion to insight, and from listlessness to lust or to the resolute pursuit of goals.
Some of us are born with inner-judges whose verdicts are perpetually harsh. The result is depression, shyness, and heightened susceptibility to pain. Others arrive from the womb with inner-judges preset to treat us generously, endowing us with energy, few inhibitions, a deep sense of security, and little sense of guilt or shame. But most of us are in the middle – our inner-judges sentence us sternly or magnanimously depending on the snugness with which we fit our social network’s needs.
Those born with inner-judges excessively lenient or severe have taught us much about the secrets of mental and emotional diversity. Harvard University researcher Jerome Kagan has probably never heard the term “inner-judges,” yet he may have done more than any other psychologist to uncover their capabilities. To understand what Kagan hath wrought, a background briefing is in order.
The early-twentieth-century psychoanalytic thinker Carl Jung, says Kagan, originated the concept of introverted and extroverted personalities. Jung also believed that each had a slightly different brain structure. Kagan feels that in his own way, he has proven Jung right. He’s found that 10 to 15 percent of infants are born with a tendency to be fearful and withdrawn, while another 10 to 15 percent are born with a flair for dauntless spontaneity. During the last few decades of the twentieth century, Kagan performed numerous experiments and accumulated large amounts of data demonstrating his concept’s validity.
He refers to facts like these:
- In studies of Japanese and American newborns, some infants took the removal of the nipple from their mouths calmly, while others went into emotional fits. The babies as yet had had no opportunity to learn these reactions from their parents. The tendencies were those they’d brought with them from the isolation of the uterus. At fourteen months, the babies who’d been easily upset at birth were still so oversensitive that they often broke out crying when the sight of a stranger loomed. On another test, babies who became upset at birth when they were switched suddenly from water to a sugar solution squalled hysterically at the age of one or two when their mothers left the room, but babies who had taken the change in beverage casually did not. In addition, a study of 113 children showed that those who had a hard time handling the unexpected when they were one year old were still shy and withdrawn by the time they reached six.
- This tendency toward variation in personality was not limited to human beings. According to Kagan, it appeared in dogs, mice, rats, wolves, cats, cows, monkeys, and paradise fish. Some of these animals were fascinated by novelty. Others were terrified by anything the least bit out of place.
- Fifteen percent of cats steered clear of strangers and even avoided attacking rats. This was remarkably close to the percentage of humans frozen by anxiety attacks.
Kagan traces these differences to genes, which can help set off a lifelong domino effect in the brain. The production of key manufacturing enzyme for the stimulant norepinephrine, says Kagan, is controlled by a single pair of genes, making norepinephrine levels highly heritable. Norepinephrine – which is also a potent stress hormone – shows up very early in the development of the embryo, making the hippocampus oversensitive to the unfamiliar, and hyperactivating the amygdala, which jolts us with the warning signal we call fear. The hippocampus and amygdala – as we’ve seen earlier – are central shapers of the memory bank we call reality. They are also key to the inner-judges’ machinery.
Later in life the products of a prebirth norepinephrine cascade are timid children, who, in carefully controlled studies, are alert to slight changes in tones or brightness of light that other children miss. In other words, these children literally see and hear their world in ways others would not recognize. According to Kagan, the constitutionally frightened are endowed with a limbic system hair-triggered to curse them with a sense of imminent catastrophe. As a consequence, shy children attempt to escape punishment by hiding from everyday events which threaten to torment them hideously. Uninhibited children, on the opposite end of the scale, have underaroused limbic systems and demand a deluge of entertainment to dodge boredom’s intolerability. Their craving for excitement can sometimes wear their parents to a frazzle.
Kagan’s shy children are condemned to solitude and pain by hanging judges in their own biology. Kagan’s uninhibited kids are gifted with indulgent inner-judges predisposed by the limbic system to offer such unearned rewards as boldness and social dexterity. But most of the animals and humans Kagan has studied avoid these two extremes. Seventy percent remain in the middle, their inner-judges handing out positive and negative verdicts according to the rules of the learning machine.
*”Endorphin” is a contraption of the term “endogenous morphine.
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