Golgi stained neurons in the dentate gyrus of an epilepsy patient. Image: WikiCommons
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Self-awareness by numbers

What is consciousness? In the past, this question was the preserve of theologians, psychologists and philosophers. Scientists seemed unable to find a way to probe the grey matter between our ears. Now that has changed. The study of the brain has experienced a renaissance.

We are in a moment similar to that when the telescope provided a way for the likes of Galileo to explore the outer reaches of the solar system. The development of the fMRI (functional magnetic resonance imaging) scanner, techniques of transcranial magnetic stimulation (TMS) and EEGs (electroencephalograms) has given scientists a way to ask the brain new questions. One of the most intriguing proposals to emerge is that mathematics might hold the key to unlocking the mystery of consciousness.

To understand what makes something conscious, one can look at the converse question of what contributes to things being unconscious. Every night, when we fall into dreamless sleep, our consciousness disappears. So what is happening in the brain that causes us to lose our sense of self until we wake or dream?

In the past, it was impossible to ask the sleeping, dreamless brain questions. New TMS techniques allow us to infiltrate the brain and artificially make neurons fire. By applying a rapidly fluctuating magnetic field to the brain, we can activate specific regions when people are awake and, more excitingly, when they are asleep. So how do the conscious and sleeping brains respond to this stimulation of neurons?

Experiments conducted by Giulio Tononi and his team at the Centre for Sleep and Consciousness at the University of Wisconsin-Madison have shown that the brain’s reaction to TMS when it is awake is strikingly different from when it is dreamlessly sleeping. The first part of the experiment involves applying TMS to a small region of the participants’ brains when they are awake or conscious. Electrodes attached to the head record the effect using EEG. The results show that different areas far away from the stimulated site respond to the stimulation at different times in a complex pattern that then feeds back to the original site of the stimulation. The brain is interacting as a complex, integrated network.

Participants are then required to fall asleep and, once in deep, “stage-four” sleep, TMS is again applied to the brain in the same location, stimulating the same region. Unlike in the conscious state, the electrical activity does not propagate through the brain. It’s as if the network is down. The tide has come up, cutting off connections. The implication is that consciousness has to do with the complex integration in the brain.

Our gut has as many neurons as our brain, yet we don’t believe it is conscious. Is this because the neurons are not wired to have this integrated feedback behaviour? Tononi has even developed a mathematical coefficient of consciousness that measures the amount of integration present in a network. Called “phi”, it is a measure that can be applied to machines as well as the human brain and offers a quantitative mathematical approach to what makes me “me”.

Could Tononi’s phi help us understand if a computer, the internet or even a city can achieve consciousness? Perhaps the internet or a computer, once it hits a certain threshold, might recognise itself at some point in the future. Consciousness could correspond to a phase change in this coefficient, rather like the way water can change state when its temperature passes the threshold for boiling or freezing.

If consciousness is a spectrum encoded by this coefficient, measuring from the consciousness of a stone to the consciousness of the human mind, who are we to say there might not be consciousness beyond where evolution has taken the brain? The fMRI scans that have been done on Tibetan monks as they meditate seem to show that the act of meditation takes them into an altered brain state that might well be an increased level of consciousness. The brain appears to be organised into two networks: the extrinsic network and the intrinsic – or default – network.

When people are performing tasks external to themselves, such as playing a musical instrument or filling the kettle, it is the extrinsic portion of their brain that is active. When individuals are reflecting more on themselves and their emotions, it the default network that appears to be more dominant.

The interesting observation is that these two networks are rarely fully active at the same time. One side of the see-saw needs to be down in order to allow the other side to play its part in enabling an individual to concentrate on whatever task is at hand. Yet evidence from scanning the Buddhist monks during periods of meditation indicates that they seem to be able to raise both sides of this neural see-saw at the same time.

The research opens up the thrilling possibility that there are ways to increase your levels of consciousness. And so, on 2 March, as part of the Barbican’s and the Wellcome Trust’s season “Wonder: Art and Science on the Brain”, I will be collaborating with the musician James Holden to see whether we can use music to take the collective phi of our audience and turn it up to 11.

Marcus du Sautoy is the Simonyi Professor for the Public Understanding of Science at the University of Oxford. “Wonder: Art and Science on the Brain” will run at the Barbican Centre, London EC2, from 2 March to 10 April

This article first appeared in the 04 March 2013 issue of the New Statesman, The fall of Pistorius

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Why Jeremy Corbyn is a new leader for the New Times

In an inspired election campaign, he confounded his detractors and showed that he was – more than any other leader – in tune with the times.

There have been two great political turning points in postwar Britain. The first was in 1945 with the election of the Attlee government. Driven by a popular wave of determination that peacetime Britain would look very different from the mass unemployment of the 1930s, and built on the foundations of the solidaristic spirit of the war, the Labour government ushered in full employment, the welfare state (including the NHS) and nationalisation of the basic industries, notably coal and the railways. It was a reforming government the like of which Britain had not previously experienced in the first half of the 20th century. The popular support enjoyed by the reforms was such that the ensuing social-democratic consensus was to last until the end of the 1970s, with Tory as well as Labour governments broadly operating within its framework.

During the 1970s, however, opposition to the social-democratic consensus grew steadily, led by the rise of the radical right, which culminated in 1979 in the election of Margaret Thatcher’s first government. In the process, the Thatcherites redefined the political debate, broadening it beyond the rather institutionalised and truncated forms that it had previously taken: they conducted a highly populist campaign that was for individualism and against collectivism; for the market and against the state; for liberty and against trade unionism; for law and order and against crime.

These ideas were dismissed by the left as just an extreme version of the same old Toryism, entirely failing to recognise their novelty and therefore the kind of threat they posed. The 1979 election, followed by Ronald Reagan’s US victory in 1980, began the neoliberal era, which remained hegemonic in Britain, and more widely in the West, for three decades. Tory and Labour governments alike operated within the terms and by the logic of neoliberalism. The only thing new about New Labour was its acquiescence in neoliberalism; even in this sense, it was not new but derivative of Thatcherism.

The financial crisis of 2007-2008 marked the beginning of the end of neoliberalism. Unlike the social-democratic consensus, which was undermined by the ideological challenge posed by Thatcherism, neoliberalism was brought to its knees not by any ideological alternative – such was the hegemonic sway of neoliberalism – but by the biggest financial crisis since 1931. This was the consequence of the fragility of a financial sector left to its own devices as a result of sweeping deregulation, and the corrupt and extreme practices that this encouraged.

The origin of the crisis lay not in the Labour government – complicit though it was in the neoliberal indulgence of the financial sector – but in the deregulation of the banking sector on both sides of the Atlantic in the 1980s. Neoliberalism limped on in the period after 2007-2008 but as real wages stagnated, recovery proved a mirage, and, with the behaviour of the bankers exposed, a deep disillusionment spread across society. During 2015-16, a populist wave of opposition to the establishment engulfed much of Europe and the United States.

Except at the extremes – Greece perhaps being the most notable example – the left was not a beneficiary: on the contrary it, too, was punished by the people in the same manner as the parties of the mainstream right were. The reason was straightforward enough. The left was tarnished with the same brush as the right: almost everywhere social-democratic parties, albeit to varying degrees, had pursued neoliberal policies. Bill Clinton and Tony Blair became – and presented themselves as – leaders of neoliberalism and as enthusiastic advocates of a strategy of hyper-globalisation, which resulted in growing inequality. In this fundamental respect these parties were more or less ­indistinguishable from the right.

***

The first signs of open revolt against New Labour – the representatives and evangelists of neoliberal ideas in the Labour Party – came in the aftermath of the 2015 ­election and the entirely unpredicted and overwhelming victory of Jeremy Corbyn in the leadership election. Something was happening. Yet much of the left, along with the media, summarily dismissed it as a revival of far-left entryism; that these were for the most part no more than a bunch of Trots. There is a powerful, often overwhelming, tendency to see new phenomena in terms of the past. The new and unfamiliar is much more difficult to understand than the old and familiar: it requires serious intellectual effort and an open and inquiring mind. The left is not alone in this syndrome. The right condemned the 2017 Labour Party manifesto as a replica of Labour’s 1983 manifesto. They couldn’t have been more wrong.

That Corbyn had been a veteran of the far left for so long lent credence to the idea that he was merely a retread of a failed past: there was nothing new about him. In a brilliant election campaign, Corbyn not only gave the lie to this but also demonstrated that he, far more than any of the other party leaders, was in tune with the times, the candidate of modernity.

Crises, great turning points, new conjunctures, new forms of consciousness are by definition incubators of the new. That is one of the great sources of their fascination. We can now see the line of linkage between the thousands of young people who gave Corbyn his overwhelming victory in the leadership election in 2015 and the millions of young people who were enthused by his general election campaign in 2017. It is no accident that it was the young rather than the middle-aged or the seniors who were in the vanguard: the young are the bearers and products of the new, they are the lightning conductors of change. Their elders, by contrast, are steeped in old ways of thinking and doing, having lived through and internalised the values and norms of neoliberalism for more than 30 years.

Yet there is another, rather more important aspect to how we identify the new, namely the way we see politics and how politics is conceived. Electoral politics is a highly institutionalised and tribal activity. There have been, as I argued earlier, two great turning points in postwar politics: the social-democratic era ushered in by the 1945 Labour government and the neoliberal era launched by the Tory government in 1979.

The average Tory MP or activist, no doubt, would interpret history primarily in terms of Tory and Labour governments; Labour MPs and activists would do similarly. But this is a superficial reading of politics based on party labels which ignores the deeper forces that shape different eras, generate crises and result in new paradigms.

Alas, most political journalists and columnists are afflicted with the same inability to distinguish the wood (an understanding of the deeper historical forces at work) from the trees (the day-to-day manoeuvring of parties and politicians). In normal times, this may not be so important, because life continues for the most part as before, but at moments of great paradigmatic change it is absolutely critical.

If the political journalists, and indeed the PLP, had understood the deeper forces and profound changes now at work, they would never have failed en masse to rise above the banal and predictable in their assessment of Corbyn. Something deep, indeed, is happening. A historical era – namely, that of neoliberalism – is in its death throes. All the old assumptions can no longer be assumed. We are in new territory: we haven’t been here before. The smart suits long preferred by New Labour wannabes are no longer a symbol of success and ambition but of alienation from, and rejection of, those who have been left behind; who, from being ignored and dismissed, are in the process of moving to the centre of the political stage.

Corbyn, you may recall, was instantly rejected and ridiculed for his sartorial style, and yet we can now see that, with a little smartening, it conveys an authenticity and affinity with the times that made his style of dress more or less immune from criticism during the general election campaign. Yet fashion is only a way to illustrate a much deeper point.

The end of neoliberalism, once so hegemonic, so commanding, is turning Britain on its head. That is why – extraordinary when you think about it – all the attempts by the right to dismiss Corbyn as a far-left extremist failed miserably, even proved counterproductive, because that was not how people saw him, not how they heard him. He was speaking a language and voicing concerns that a broad cross-section of the public could understand and identify with.

***

The reason a large majority of the PLP was opposed to Corbyn, desperate to be rid of him, was because they were still living in the neoliberal era, still slaves to its ideology, still in thrall to its logic. They knew no other way of thinking or political being. They accused Corbyn of being out of time when in fact it was most of the PLP – not to mention the likes of Mandelson and Blair – who were still imprisoned in an earlier historical era. The end of neoliberalism marks the death of New Labour. In contrast, Corbyn is aligned with the world as it is rather than as it was. What a wonderful irony.

Corbyn’s success in the general election requires us to revisit some of the assumptions that have underpinned much political commentary over the past several years. The turmoil in Labour ranks and the ridiculing of Corbyn persuaded many, including on the left, that Labour stood on the edge of the abyss and that the Tories would continue to dominate for long into the future. With Corbyn having seized the political initiative, the Tories are now cast in a new light. With Labour in the process of burying its New Labour legacy and addressing a very new conjuncture, then the end of neoliberalism poses a much more serious challenge to the Tories than it does the Labour Party.

The Cameron/Osborne leadership was still very much of a neoliberal frame of mind, not least in their emphasis on austerity. It would appear that, in the light of the new popular mood, the government will now be forced to abandon austerity. Theresa May, on taking office, talked about a return to One Nation Toryism and the need to help the worst-off, but that has never moved beyond rhetoric: now she is dead in the water.

Meanwhile, the Tories are in fast retreat over Brexit. They held a referendum over the EU for narrowly party reasons which, from a national point of view, was entirely unnecessary. As a result of the Brexit vote, the Cameron leadership was forced to resign and the Brexiteers took de facto command. But now, after the election, the Tories are in headlong retreat from anything like a “hard Brexit”. In short, they have utterly lost control of the political agenda and are being driven by events. Above all, they are frightened of another election from which Corbyn is likely to emerge as leader with a political agenda that will owe nothing to neoliberalism.

Apart from Corbyn’s extraordinary emergence as a leader who understands – and is entirely comfortable with – the imperatives of the new conjuncture and the need for a new political paradigm, the key to Labour’s transformed position in the eyes of the public was its 2017 manifesto, arguably its best and most important since 1945. You may recall that for three decades the dominant themes were marketisation, privatisation, trickle-down economics, the wastefulness and inefficiencies of the state, the incontrovertible case for hyper-globalisation, and bankers and financiers as the New Gods.

Labour’s manifesto offered a very different vision: a fairer society, bearing down on inequality, a more redistributive tax system, the centrality of the social, proper funding of public services, nationalisation of the railways and water industry, and people as the priority rather than business and the City. The title captured the spirit – For the Many Not the Few. Or, to put in another way, After Neoliberalism. The vision is not yet the answer to the latter question, but it represents the beginnings of an answer.

Ever since the late 1970s, Labour has been on the defensive, struggling to deal with a world where the right has been hegemonic. We can now begin to glimpse a different possibility, one in which the left can begin to take ownership – at least in some degree – of a new, post-neoliberal political settlement. But we should not underestimate the enormous problems that lie in wait. The relative economic prospects for the country are far worse than they have been at any time since 1945. As we saw in the Brexit vote, the forces of conservatism, nativism, racism and imperial nostalgia remain hugely powerful. Not only has the country rejected continued membership of the European Union, but, along with the rest of the West, it is far from reconciled with the new world that is in the process of being created before our very eyes, in which the developing world will be paramount and in which China will be the global leader.

Nonetheless, to be able to entertain a sense of optimism about our own country is a novel experience after 30 years of being out in the cold. No wonder so many are feeling energised again.

This article first appeared in the 15 June 2017 issue of the New Statesman, Corbyn: revenge of the rebel

Martin Jacques is the former editor of Marxism Today. 

This article first appeared in the 15 June 2017 issue of the New Statesman, Corbyn: revenge of the rebel

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