Sunday, March 25, 2012

Fighting the consequences of cortical de-activation with another cortical de-activation

Some time ago, I wrote a post in which I questioned whether greed can be regulated by courses on ethics and ethical behavior. Greed is, after all, a biological phenomenon and, I argued, that when humans are faced with the prospect of untold riches, their cortex is probably significantly de-activated.

There is no definite evidence for this, greed itself not having been studied neurobiologically to my knowledge. But there is evidence that a neural correlate of being passionately in love is the de-activation of significant parts of the cerebral cortex, which probably is one reason why we tend to be less judgmental of those we deeply love, and sometimes act in apparently irrational ways when in love.

I believe, therefore, that it is pointless to give lectures on ethics and ethical conduct to those who plan to go into the financial world; it is just as pointless to start talking about “ethical stocks”, an idea floated by some businessmen. Because of cortical de-activation, the prospect of great wealth also leads to a lapse of judgment in other areas, including moral conduct, or so I argued.

What I had not considered was that it may be possible to fight greed in one area – making unlimited sums – with greed in another area, sexual gratification. But now comes a report from Spain that this might just about work.

Sexual activity also leads to massive cortical de-activation. I suppose, but I am not sure, that the desire for sexual gratification also leads to much cerebral de-activation. Hence judgment about making money (greed) may be suspended when much of the resources of the brain are concentrated on obtaining another biological gratification, with the attendant cortical de-activation.

Apparently
, the escort girls of Madrid have gone on strike to deny bankers the sexual gratification that the bankers seek – until they behave in ways that are more morally acceptable to the escort girls. This appears to have led to some irrational behaviour on the part of the bankers.

Hilariously, the escort girls of Madrid may have – just – hit on the right formula to temper greed.

Read about it for yourself.

Sunday, March 11, 2012

The fear of neuroesthetics III

It is worth examining briefly another terrain – reductionism - on which some display their fear and loathing of neuroesthetics. I say some because I don’t want to tar everyone with the same brush. In my experience, a significant number of those in the humanities I meet are very hospitable to neuroesthetics. This is especially true of artists and composers. They do not seem to fear us. They want to learn more.

As I have argued on this site before, science is reductionist by its nature. It cannot study a complex system as a whole; rather, it isolates its constituents first and tries to build a picture of the whole from studying its parts. This is true of the study of matter by physics and chemistry – to study the particles constituting matter in terms of atoms and electrons and neutrons, and then the sub-atomic parts, and so on. It is true of biology and medicine, which tries to isolate, for example, the constituents of a cell to study their chemistry, or molecular biology, and to learn how these constituent parts interact. Yet this kind of necessary reductionism is, rightly, never criticized. Any perceived reductionism by neuroesthetics is, on the other hand, roundly condemned, at least by those who see it as having the imaginary powers to “flatten our culture”.

But let us forget chemistry, physics, and biology and delve into the humanities, and into the arts, that is to say into the territory from which the vociferous critics of neuroesthetics come. How certain is it that artists and art historians and philosophers of aesthetics do not indulge in the same kind of reductionism that the critics of neuroesthetics find so odious?

When the English art historian, Clive Bell, asks in his book Art what “Sta Sophia and the windows at Chartres, Mexican sculpture, a Persian bowl, Chinese carpets, Giotto’s frescoes at Padua, and the masterpieces of Poussin, Piero della Francesca, and Cézanne” have in common because “either all works of visual art have some common quality, or when we speak of ‘works of art’ we gibber”, is he not being reductionist?

And when Immanuel Kant writes in The Critique of Judgment of a sensus communis which gives universal validity to the aesthetic judgment of an individual, is he not being reductionist?

How do these differ, in terms of reductionism, from the quest of neurobiologists to learn what kind of brain activity is common to the experience of all beauty in all humans, regardless of the source of the beauty (i.e. whether it is a portrait painting, or a landscape or a musical excerpt) and regardless of the cultural, educational and ethnic backgrounds of those experiencing beauty?

And when Piet Mondrian, in his artistic exploration of form, asks what is the essential constituent of all forms and settles on the vertical and horizontal straight lines, is he not being reductionist?

And how does this differ in terms of reductionism from the quest of neurobiologists to learn whether orientation selective cells in the visual brain (cells which respond specifically to straight lines) are the physiological building blocks of form in the brain?

Is the neurobiologist more reductionist than the artist in this instance?

And when kinetic artists emphasize motion and de-emphasize colour and form, are they not being reductionist?

And when Paul Cézanne considers all the variety of the natural world in terms of the cone, the cylinder and the sphere, is he not being reductionist?

Is abstract art not reductionist?

And this is only a brief list. There are many more examples of reductionism in the humanities.

In light of the above, it is interesting to ask why some single out neuroesthetics to stigmatize it with their hate word “reductionist”?

What exactly are they so afraid of?

Saturday, March 10, 2012

the fear of neuroesthetics II

The highly emotional language used by some to describe neuroesthetics, of which I gave a selection in my previous post, suggests a fear – and an irrational one at that – of neuroesthetics. Fear is an interesting state, to which I will return in a future post. But here I want to examine one of the arguments used to trash neuroesthetics by those who fear it so much – “trash” being their word to describe neuroesthetics.

The charge is that even a very detailed study by neuroscientists of the brain’s reaction to an artistic work – or a very detailed study of its creator – will not “explain” the work. The columnist in The Scotsman article gave the example of Finnegan’s Wake. A friend of mine told me of the complaint of a philosopher about neuroesthetics, that no amount of studying the brain response to Richard Wagner’s Tristan und Isolde will “explain” it. I wrote in my previous post that it is not the aim or mission of neuroesthetics to explain works of art. On the contrary, neuroesthetics is inspired by works of art and debates in the humanities to learn something about the brain. Let me emphasize that we do not try to “explain” the brain either, but just to gain some insights into its functioning.

However, since one of the chosen terrains by those who wish to “trash” neuroesthetics is that of explanation, it is worth reflecting briefly on who are they who have been trying throughout the ages to “explain” works of art and music and literature.

There are hundreds, probably thousands, of books and articles written on Hamlet. The number of books and articles on the Tristan chord alone exceeds 2000. Many books and articles have been written to “explain” TS Eliot’s poetry [An interesting point here: Eliot reputedly once told a man who tried to explain some lines of his: “Thank you for explaining it to me. I didn’t understand it before” – or words to that effect]. Untold thousands of articles and books have been written trying to “explain” the works of some painter or another. And the list goes on!

Who has written these books and articles? Not neurobiologists, but art critics, literary critics, etc. If they try to “explain” these works, it must mean that they think that there is something explicable about them. And if so, why should they restrict to themselves, or to humanists in general, the privilege of explaining them? Why should a neurobiologist not have the same privilege, even if in the end his or her explanation turns out to be “trash”? Would it not be worth reading their “explanations” (assuming them to have given any) before dismissing in emotionally charged language that what they write is “trash”?

I may add that I often read the explanations provided by art and literary critics of art works with profit and pleasure. Some may seem far-fetched, others are sober and level-headed, many are interesting and inspiring in terms of new ideas and connections. It would never cross my mind to dismiss their collective efforts as “trash”.

I have here used the word explain in quotes throughout, partly because I am quoting those who dismiss neuroesthetics and partly because I do not understand what is meant by “explaining” a work such as Tristan und Isolde or Hamlet. One may want to explain something about the work – many articles have discussed whether Richard Wagner destroyed tonal music in Tristan – but I am not sure that any article succeeds in explaining so complex a masterpiece as Tristan. Where an attempt is made to explain a whole work in a few lines, the result is often unsatisfactory. I once heard an historian trying to explain the whole of Edward Gibbon’s Decline and Fall of the Roman Empire by saying that it can be summarized thus, “That all power corrupts”. Well, that is not quite the “explanation” that I would read into that work. My explanation, if I had to reduce it to a few words, would be: That good and evil reside in most men, and that they come especially to the fore when men have power, though only momentarily, because men, like the empires they create, are ephemeral and ultimately all are crushed by history and destiny. My explanation, too, is unsatisfactory and does not provide an explanation of the whole of Gibbons’ masterpiece, nor would I claim that it is better than the one given by the political historian. Indeed, I am not sure that there can be a simple explanation for Gibbons’ subtle and brilliant masterpiece.

To sum up – once it is acknowledged implicitly, through the many articles written about works of literature, art and music, that there is something explicable in them, the terrain of explanation on which those who want to dismiss neuroesthetics plant their dismissal simply vanishes. They should try hard to find better grounds.

Monday, March 5, 2012

The fear of neuroesthetics I

Every now and then, neuroesthetics is denounced in terms so emotional that one might be forgiven to think that, far from being an intellectual, experimental exercise in trying to learn something about the brain, it is some kind of new and devastating military adventure of awesome destructive power. A novelist has apparently described neuroesthetics as “one of the biggest follies of our era” and an “absolute idiocy… a form of absolute certainty that will flatten all the complexity of culture, and the beauty of it as well”. A bit over the top, one might think, given the daily follies in the political, military and economic spheres, which materially affect our lives far more than neuroesthetics ever will. Perhaps, one might also think, that the description of neuroesthetics as “flattening all the complexity of culture” is more appropriate to a description of dropping a nuclear bomb on some unfortunate country. Such descriptions not only endow neuroesthetics with extraordinary powers, which its practitioners never thought they possessed, but also betray a thrombotic loathing and fear of what neuroesthetics might achieve and reveal.

Elsewhere, a philosopher has described neuroesthetics as “neurotrash”, thus licensing himself and others who may believe him from ignoring it completely. Yet it seems odd that a relatively new discipline, which has been inspired by debates in the humanities - about the nature of beauty, and its links to love and desire - to learn something about what happens in the brain when we have such experiences, should arouse such strong reactions in some. If something is indeed trash, why bother with it at all, let alone describe it as “one of the biggest follies of our era”? After all, what could be more harmless than trying to apply questions raised in the humanities to learning something about the brain, especially given the primacy that most philosophers of aesthetics have given to the senses?

Of course, when one categorizes a serious effort as “trash”, one insulates oneself from having to read what its practitioners have to say. An interesting example is to be found in a recent article in The Scotsman, curiously entitled “Art and science don’t mix”, which elicited this apt comment in the columns of the paper ”I would be very interested in what Leonardo might have to say about the statement "Art and Science Don't Mix." What indeed!

At any rate, a correspondent drew my attention recently to this article, which describes neuroesthetics as “unadulterated bunkum”. It is an interesting article to read, for it betrays a complete lack of understanding of the aims of neuroesthetics and ends with a spectacular own goal.

Using a somewhat far-fetched example, the author of The Scotsman article writes that, “If you take a bit of [James] Joyce’s brain and put it under the microscope, it’s not going to explain Finnegans Wake”. But far from trying to “explain” a work of art or a literary masterpiece, neuroesthetics only tries to gain insights from them to try and learn something about the brain. There are many examples one could give. Mondrian’s artistic exploration of what element is the essential constituent of all forms (the straight line) is a question that is almost identical to the neurobiological question of how the brain represents or constructs forms, especially since the discovery of cells in the visual brain which respond selectively to straight lines. To be inspired by Mondrian’s question and by his artistic explorations to frame scientific questions about the brain does not amount to explaining Mondrian’s work. Equally, no neurobiologist interested in the brain mechanisms mediating our experience of love would want to ignore the world literature of love for insights. This does not amount to trying to “explain” (whatever that may mean) Tristan und Isolde or Madame Bovary or Wuthering Heights.

The author continues triumphantly, “Neuroaesthetics may be a very new field, and neurology may be relatively contemporary, but aesthetics has been studied for millennia.” Precisely! And that is why neuroesthetics relies so heavily on the fruits of these studies and is inspired by them. What is so outrageous about that? How does it amount to a “folly” which will “flatten all the complexity of culture”?

With such contempt does the author maneuver himself into a position where he can mock the article without troubling himself to read what we have written. He writes “It is unclear to me who, for example, decided in the UCL experiment that Guido Reni was somehow objectively less ugly than Hieronymus Bosch”. Well, it is actually spelled out quite clearly, and quite early on in our paper, that each subject gave their own rating for how beautiful the paintings they saw or the musical excerpts they listened to were. No one else rated the paintings for them. The author’s confusion nevertheless leads him to deliver a neat little lecture to those like us whom he supposes to be ignorant of art and about art, or at least less knowledgeable about it than himself: “but the claim lays bare a deeper misunderstanding about art: the idea that in the visual arts beauty is the highest aim. It is not just a legacy of Modernism that we have a more sophisticated idea about art’s aims. In the Renaissance, Caravaggio and Grunewald set out to shock, unsettle and challenge; as did Goya and Doré in the 19th century. Paintings by Poussin, David and Magritte invite a cerebral response as well as an emotive one. From revulsion to awe and from laughter to enigma, art is more than a matter of ‘beauty’”.

If he had bothered to read further down our article – though admittedly this is some 8 pages into the article - he would have seen the following:

“Notions of art have since changed and many will today
acknowledge that something considered to be a work of art need
not be perceived as beautiful, good examples being some of the
paintings of Francis Bacon, or the nudes of Lucian Freud, which is
not to say that these works do not have considerable artistic merit
both in their painterly style and in projecting truths, including
truths about decay and ugliness. But any work, be it considered art
or not, may be subjectively experienced as being beautiful by an
individual. This leads us to divorce art from beauty in this
discussion and concentrate on beauty alone.
“

But the best is left to the end, when the author quotes approvingly Picasso as having said “when we love a woman we don’t start by measuring her limbs.” There are no quotation marks and no reference to source, so it is hard to know whether this is quoted out of context or not. Picasso was an intelligent man and I find it hard to credit him with having said something quite so silly. But assuming that the quote is not taken out of context, it must rank as one of the silliest things anyone – let alone a painter – can say. For, of course, men make very detailed assessments when they meet a woman, and women do the same when they meet men. These assessments are undertaken before they fall in love. They do not use rulers but other subtle measuring systems in the brain. Had the author not decided that all that neuroesthetics has to say is trash, he might even have learned something about the attempts of neuroscience to learn how we assess people.

Sunday, January 8, 2012

The perils of neural adaptation

In neurobiology, adaptation commonly refers to a property of nerve cells which makes them less responsive to repeated exposure to the same stimulus at the same intensity. A cell responding well to, say, red light, will become less and less responsive if it is repeatedly stimulated with red light. On the other hand, if not stimulated for a while, it will recover its excitability and will then become as responsive as when first stimulated.

I presume that a basically similar operation takes place over longer periods in other systems, when we become less responsive, for example, to a song which we once liked very much.

There are no doubt many good biological reasons for having adaptation; getting adapted to a new way of doing things may be beneficial in some circumstances. But I fear it perhaps also works often to our disadvantage. Through adaptation, we begin to accept situations that we once might have thought intolerable. Through such a process, we begin to accept, for example, the prying eyes and ever increasing encroachment of the state into our affairs, something that almost no country in the world seems to be immune to. Ultimately, this works to our disadvantage but, through adaptation, we accept it with a shrug of the shoulder.

There are, however, situations where one just does not get adapted, and the neurobiology of the non-adaptive system is interesting to study, especially when applied to the linguistic system.

I recognize that the English language, like any other language, changes with usage. But I can never get adapted to the use of “that” instead of “who” when referring to people.

The most memorable thing I can remember about an ex-British prime minister is that he joined in the contemporary massacre of the English language by speaking of “people that do such things” instead of “people who do such things”.

I cannot get adapted to the vulgarity of the use of “like” – “do you, like, have, any bread, like”.

I cannot get adapted to the hopeless use of the word “inform”, which has become so common as to become a constant irritant - “the report has been informed by the design of buildings”, when I always thought that only people can inform.

I cannot get adapted to the clichés of “cutting-edge” science or “state of the art” technology, commonly used as substitutes for thinking.

I cannot even get adapted to terms that I myself am guilty of using constantly, for example saying “you know” or “I mean” constantly in a conversation – when in fact people don’t know, which is why I am telling them, and what “I mean” becomes clear only after I have told them.

In a strange way, I wish I could get adapted to these irritants, because then they will cease to be irritants.

I suppose that there is a part of our nervous systems that is resistant to adaptation. In my case, this certainly is a feature of my linguistic brain but it is not restricted to it; there are many other things that I just do not seem to be able to get adapted to.

Whether our nervous system becomes less plastic and therefore less adaptable with age, or whether adaptation is not equally potent in regulating all nervous activity, or whether it is a combination of the two plus other factors, a study of the diverse nature of adaptation would be interesting.

Thursday, January 5, 2012

Help...wine & cheese experts

About thirty years ago, some wine experts in France decreed that red wines should be chilled before being served. I was idiotic enough then to believe them and so chilled my red wine …but only once or twice. I rapidly came to the conclusion that I prefer my clarets at room temperature and have never been tempted back since.

Now, in an article published last week in The Daily Telegraph, another group of experts are reported to have patronizingly told us that we have all been fooled for years, that we must really accompany cheese with white wine, not red wine since the reds dominate all but the most robust cheeses, according to them. And of course, we must continue to serve white, never red, with fish.

All this is of course stuff and nonsense. The combination of wine and cheese that go best together are the wines and the cheeses which you like, ones which give you pleasure. I have always preferred my fish with a good claret and will continue to do so. I have always preferred my cheese with a good claret and will continue to do so. I agree more with Dr. Johnson, no wine expert he, when he said that “a fish must swim three times, once in the sea, once in butter, and once in a good bottle of claret”!

No doubt, as with the silly ideas about chilling red wine that the experts pushed some thirty years ago, they will sooner or later be pushing the idea that cheeses are best accompanied by red wine after all. And recall all this fuss about nouvelle cuisine some years ago, much of it extremely dreary. In fact there is a hilarious accompanying article in the same issue of The Daily Telegraph which pokes good fun at a seemingly new brand of nouvelle cuisine restaurant, which has opened in London.

Experts can peddle their silly views only when we lack confidence in our own tastes and in our own judgment. Why we do so is itself a very interesting psychological and neurobiological problem, as is the problem of why some combinations are judged better than others and why, in spite of our better judgments, we defer to the dubious authority of experts.

Which brings me to an interesting puzzle: why is it that, in England, we have the somewhat barbaric habit of serving cheese after dessert (have any experts commented on this?). Well, I have found out the reason, or one reason. I don’t know how true it is, but it is not implausible. The French have cheese pour faire chanter le vin [to make the wine sing], before moving on to the dessert accompanied by dessert wines, which ends the formal dinner. Apparently, in England quite some time ago, there was an anxiety on the part of men to end the formal dinner as quickly as possible so that the women could retire [or be made to retire] to a separate room, and the men could continue with refined binge drinking and men talk. And since dessert ends the formal dinner in both cultures, all they had to do was swap the cheese and the dessert around. And the habit has lingered on.

Thursday, December 29, 2011

Attention and the Leonardo Exhibition

I sometimes wish that the brain had several parallel attentional systems, with the possibility of switching each one on and off at will. I recognize the many difficulties of a nervous systems so arranged, not least of which is the problem that a switched-off attentional system will no longer be capable of signaling danger. But there would also be advantages, and one advantage would have been handy when I attended the Leonardo Exhibition at the National Gallery in London several weeks ago.

It was a dreadful experience, made all the more dreadful by the presence of so many masterpieces which would one could just not contemplate at leisure. Apparently, the Gallery had restricted entry to 185 at a time , instead of the 250 at any one time that they stuff in at such exhibitions. That may relate to the numbers entering; it has nothing to do with the numbers leaving. There must have been at least 600 in the room when I was there, describing paintings to their friends in a variety of languages, gesticulating and pointing to various features and, in general, distracting attention from the paintings and drawings themselves. To all those who do not wish to have such an unpleasant experience but learn about the paintings, I would recommend buying the catalogue instead, and forgetting about the exhibition. Of course, photographs never compare with the real thing, but at least you will be able to view the paintings without the endless distraction imposed by an attentional system that is simply not able, for good biological reasons, to handle many distractions.

I readily admit that I may be more sensitive than others to crowds. In addition to invading one’s peri-personal space with their handbags, etc, they also invade one’s auditory space incessantly. I deplore the endless messages now broadcast in Underground stations, many of which are pointless (“stand behind the yellow lines”; “no flash photography on the Underground”; “please contribute to our charity” and, most useless of all, “there is a good service on all lines this morning” (which, however, is more often than not followed by the announcement: “except for the following – the Circle, District, Piccadilly and City lines”, rendering the first part not only useless but also inaccurate). I hate announcements on planes, and in fact on a recent flight to Japan, I asked the steward if he could shut off the endless announcements on the intercom system (he did). Wherever I go, I am plagued by someone sitting next to me chattering on their mobile ‘phones. But such disagreeable experiences become doubly more so when one goes to a gallery to enjoy oneself and be instructed. So, I think that my days of visiting block-buster exhibitions are now over, unless of course I come across so much money that I can hire the entire exhibition for myself – an unlikely eventuality. Or, even more unlikely, if I could come up with a re-wiring of the nervous system such that a distracting input can be completely shut off.