A paralysed man has been able to walk again after communication was re-established between his brain and spinal cord using a wireless “digital bridge”.
The so-called brain computer interface is made up of two electronic implants, one each in the brain and spinal cord.
The former is placed above the region of the brain responsible for controlling leg movements, and can decode the electrical signals generated when we think about walking.
Similarly, the other implant is positioned over the part of the spinal cord that controls the legs.
Working together, scientists say the groundbreaking technology “transforms thought into action” – repairing the broken connection between the brain and the region of the spinal cord that controls movement.
The first patient was a 40-year-old Dutchman, engineer Gert-Jan Oskam, who suffered a spinal cord injury in a bike accident while working in China in 2011.
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It had left him paralysed, but he noticed improvements within days of surgeons calibrating the implants.
Rediscovering simple pleasures
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“The most surprising thing I think happened after two days,” Mr Oskam said.
“Within five to minutes, I could control my hips.”
Since then, after “a long journey” of training, the patient has been able to walk, climb stairs and navigate ramps.
He has also rediscovered the “simple pleasure” of standing with friends at a bar.
The implants remained effective after a year, including when Mr Oskam was unsupervised at home.
He was treated by neuroscientists and neurosurgeons from Switzerland’s Lausanne University Hospital and the University of Lausanne, and the Swiss Federal Institute of Technology Lausanne.
The implants themselves were developed by the French Atomic Energy Commission.
Image: Gert-Jan underwent a lengthy period of training with the implants. Pic: EPFL/CHUV/UNIL and CEA/CHUGA/UGA
How does the technology work?
Guillaume Charvet, head of the project at the commission, said the implants use “adaptive artificial intelligence” to decode movement intentions from the brain in real time.
Once AI identifies the relevant signals, they are converted into sequences of electrical stimulation for the spinal cord, which activate the leg muscles and prompt the desired movement.
Remarkably, the patient experienced improvements in his sensory perceptions and motor skills that were maintained even when the digital bridge was switched off – allowing him to walk with crutches.
Professor Gregoire Courtine said this suggests the digital bridge not only repaired the man’s spinal cord, but also “promotes the growth of new nerve connections”.
AI THE KEY TO ASTONISHING BREAKTHROUGH
It’s artificial intelligence that is key here.
More than a decade ago, I spent some time in a lab with US researchers that were trying to decode brain signals from a monkey feeding itself with a robotic arm that it controlled with the power of thought.
Hundreds of signals jumped across a computer screen – and it was clear that the challenge would be detecting patterns in the data to gauge the intent.
The Swiss researchers have cracked that by carefully training the computer to pick out the signals that matter while Gert-Jan thinks about a very specific muscle movement.
The technology has clearly been transformational for one man. But now it needs to be rolled out to many more people paralysed by accidents and, the researchers hope, strokes.
It won’t be cheap, so access will be an issue. Will it just be the rich, or those with insurance payouts, who benefit?
But that’s for the future. Take nothing away from the breakthrough itself. It is astonishing. And the implications for people living with paralysis are huge.
Mr Oskam is the only patient who the digital bridge has been tested on, but it is hoped the technology could be used to restore arm and hand functions in future.
It could also be applied following other causes of paralysis, such as a stroke.
The findings have been detailed in the journal Nature.
“Listen man, we’re a narco state, it’s just how it is, if you want to see drug deals, I’ll show you drug deals – it’s Colombia.”
I’d only asked one of our Colombian producers in passing if it was possible to see drugs being traded on the streets of Medellin. I didn’t realise it was that simple.
Medellin is synonymous with drugs and cartels. The home of perhaps the most famous of all the drug lords, Pablo Escobar, it seems to revel in its notoriety.
There are pictures of Escobar everywhere, on posters, on caps, and on t-shirts. There are even guided tours to his grave, and a museum in his honour.
Image: Stuart Ramsay speaks with a coca farmer, who earn very little from growing the crop
This is where the big business drug cartels were born, invented by Escobar himself, the original Latin American “Godfather”.
In an infamous district in Medellin, we were instantly confronted with the sounds of dealers on the streets shouting out their products for sale as we drove through.
“Cocaine! Pills! Ecstasy! Tusi!” they shouted. All available to a traffic jam of cars waiting to buy.
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Motorcycle delivery drivers queued to make the pick-up for their clients waiting in high-end apartments and nightclubs elsewhere in the city, while buyers on foot discreetly scored their drugs, before moving on.
Image: Medellin was the home of Pablo Escobar and drugs are widely traded on its streets
‘Narco’ culture
It was chaotic and noisy, a place where lookouts use whistles to send signals to the dealers.
Two toots mean it’s all clear, a single toot is a warning – it means the police are nearby.
In the middle of this big open-air market for drugs, dimly lit restaurants and cafes served dinner. We passed one café where we saw a family sat at a table outside, celebrating a woman’s 70th birthday.
This neighbourhood runs a 24-hour drug selling market alongside the usual shops and cafes that spill over on to the pavement.
Image: It is not illegal to grow coca, only to use it to produce cocaine
Although Colombia has a long history and fascination with “narco” culture and drug-taking, its immediate problem is that President Donald Trump has launched a war on Latin American drug cartels, manufacturers, and the nations the drugs come from – and through.
Venezuela is at the top of his hit list; he has launched strikes on boats off the Venezuelan coast that he says were carrying drugs. He has boosted American military presence in the Caribbean – sending ships, marines, helicopters, drones and jets into the region.
There is speculation he may be looking for regime change in Venezuela, and that the war on drugs is a front to remove President Nicolas Maduro from power, claiming the Venezuelan government is basically a drug cartel. Something they of course deny.
Image: This coca plantation was hacked into the rainforest on the border of Colombia and Peru
None of this bodes well for Venezuela’s neighbour Colombia, indeed President Trump has made it clear Colombia is high on his list of troublesome nations.
There are other countries on his list, like Mexico, that he says has demonstrated willingness to clean up their act and take the war to Mexico’s deadly cartels.
Mr Trump’s gripe with Colombia isn’t necessarily that its society has a relaxed attitude to drug use – it is widespread across all classes – no, his problem is that Colombia is one of the biggest producers of cocaine in the world, and it feeds the biggest market, which is the United States of America.
Image: Coca plantations are hidden miles away from other people in the Amazon
Hidden away, miles from people
It seems that the president’s view is that the supplier is the problem, not necessarily the user.
Cocaine is extracted from the coca leaf, which is grown in abundance in Colombia, Peru, and Bolivia.
Growing the coca plant in these countries is not illegal, and the leaf itself is often used for other purposes. The plant only becomes illegal when it’s used for cocaine production.
I wanted to meet the farmers who grow coca to find out if they are the masterminds of a multi-billion-pound international drugs business, or just farmers meeting international demand.
My journey began just after dawn in pouring rain on the Amazon River in Colombia.
Perhaps unsurprisingly the plantations are hidden away in remote areas, miles away from people.
Image: Stuart Ramsay in the rainforest
We travelled for hours in the rain, on a small boat with a guide, passing indigenous communities who have nothing to do with the business hiding in their forest.
The river narrowed as we got closer to our destination, and five hours later, after navigating through broken tree trunks and low hanging branches, we arrived at an eight hectare coca plantation hacked into the rainforest bordering Colombia and Peru.
The crop, which is two-and-a-half years old, is hidden by the trees and the river.
They are about to start harvesting it, but it’s incredible just how many leaves they need.
The farmer says that for every 70 grams of cocaine produced, the cartel producers need 30 kilograms of leaves.
Image: Colombia is one of the biggest producers of cocaine
Only way to provide for his family
That’s a lot of picking – and the farmer will earn just $7 for those 30 kilograms of leaves.
The cocaine business might be incredibly lucrative for the cartels that control it, but at the very bottom the farmers hardly get paid a thing.
And though he is worried about getting caught, the farmer I meet sees it as the only way to provide for his family.
“For me it’s very valuable, it’s my sustenance, the way for sustaining life,” he told me.
“We are aware that illegal processing isn’t good for anybody, not exactly, you can’t say I am doing this, and this is good for people, no, this harms the entire community, everyone,” he explained when I asked him if he was at all conflicted about his crop.
“But we all make sacrifices, and we struggle to make our way in life.”
It’s hard to believe that the global business of manufacturing and shipping cocaine around the world all starts with these fairly innocuous looking coca leaves.
And whatever Donald Trump says, they will keep producing as long as users in America, Europe, and indeed the world, demand it.
Several boats from a large aid flotilla trying to reach Gaza have been boarded by Israeli authorities – with campaigner Greta Thunberg among those removed.
The Global Sumud Flotilla is made up of more than 40 civilian boats with an estimated 500 people onboard, and is trying to break Israel’s sea blockade.
But the attempt appears to have been thwarted – at least for now – by about 20 Israeli ships.
Israel’s foreign ministry said “several vessels” had been “safely stopped” with passengers being taken to an Israeli port.
“Greta and her friends are safe and healthy,” a spokesperson added.
Image: A livestream showed some of the boats in the flotilla as the incident unfolded
A video showed Thunberg sitting on deck while being handed a water bottle and raincoat.
It’s so far unclear how many boats have been intercepted.
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The flotilla ignored requests to turn back and organisers said the interception was illegal as it happened in “international waters” around 80 miles off the coast.
Greg Stoker, a US veteran who’s involved, said water cannon had been used on some of the boats.
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Gaza-bound flotilla ‘aggressively circled’ by warship
The flotilla, which set off from Barcelona and scheduled to arrive this morning, was flanked by NATO warships for some of the journey.
The attempt has received a lot of attention, with Nelson Mandela’s grandson, a former Barcelona mayor and several European legislators taking part.
Israel said the mission was violating a lawful blockade and is only intended to provoke. It also said it had offered a way to deliver any aid peacefully through safe channels.
Organisers said the night-time interception was the second time the flotilla had been approached on Wednesday, after “warships” earlier encircled two of its boats.
Image: The flotilla set off from Barcelona on 31 August and later stopped in Sicily
Last week, drones also reportedly dropped stun grenades and itching powder on some vessels.
Israel didn’t comment, but has said it will use any means to stop the boats getting to Gaza.
Protests have broken out in Italy and Turkey over the treatment of the flotilla.
Italy’s largest union has called a general strike tomorrow, saying the “attack on civilian vessels carrying Italian citizens represents an extremely serious matter”.
Turkey’s foreign ministry called Israel’s interception an “attack” and “an act of terror” that endangered lives of those on board.
Gaza has been dealing with severe food shortages due to the ongoing war.
Image: Thunberg and activist Saif Abukeshek. Pic: Reuters/Nacho Doce
Agencies such as the UN accused Israel of deliberately slowing the delivery of supplies – something it denies.
However, the aid being carried by the flotilla is said to only be a symbolic amount of food and medicine.
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Will Trump’s Gaza plan bring peace?
Meanwhile, all eyes remain on Hamas and whether it will accept Donald Trump’s peace plan to end the two-year war, sparked by the group’s terror attack on Israel.
The 20-point proposal was unveiled alongside Israeli Prime Minister Benjamin Netanyahu in the White House this week.
Hamas said it would study the plan and consult with other factions, but didn’t give an indication of when it would deliver its verdict.
At Kabul International Airport, there are dozens of confused looking families.
Many are holding flowers, waiting and hoping their loved ones will touch down.
Others came here hoping to take-off but are now sitting bewildered in the hot sun.
After the Taliban imposed a nationwide shutdown of the internet, no one knows if any flights are still operating and no one can use their phones to find out.
Image: The Taliban caught many in the country off-guard with their shutdown. File pic: West Asia News Agency via Reuters
“I am waiting for my brother from Australia,” one man tells me, “but I don’t know if he’s coming”.
Beyond the gates, the runway is full of grounded planes.
After hours of waiting on Tuesday, no international flights took off or arrived at Kabul Airport, despite some airlines scheduling departures.
The Taliban caught many in the country off-guard with their shutdown – reportedly even some of their own ministers.
Initially, there appeared to be no official indication of how long the shutdown might last or an explanation for why it was imposed.
Image: A man tries to use Google on his smartphone in the Afghan capital. Pic: Reuters
On Wednesday, the Taliban government rejected reports of a nationwide internet ban, saying old fibre optic cables are worn out and are being replaced.
But, at the airport, people worry it could be indefinite. Others speculate about rumours it’s to do with security protocols and the movement of officials in the country.
No one knows, and the TV and radio stations they get their news from have not been providing the latest information.
Image: Men try to connect their smart TV to the internet. Pic: Reuters
The banks are open but no one can get out money. An employee at the bank in our hotel in Kabul told us they haven’t been able to open their operating systems since Tuesday morning and that Western Union isn’t accessible either.
That’s hugely significant in a country where many are reliant on money sent back by relatives abroad and banks are already struggling with sanctions.
No one can call the police, no one can call an ambulance, and hospitals and medical services are wrestling with how to adjust too.
It follows more than a week of temporary connectivity issues in some parts of the country, with the northern region of Balkh among the first to be affected by a ban on fibre optic internet.
Image: Taliban fighters ride on a pickup truck during celebrations marking the fourth anniversary of the US withdrawal. Pic: AP
In the last 10 days, we have been travelling across Afghanistan. People in Nangarhar, Kunar, Mazar-i-Sharif and Herat all expressed concern about possible impending blackouts, and we personally experienced a slowdown in connectivity in these places. But nothing as widespread or sustained as this shutdown which is nationwide.
Two weeks ago, the Taliban’s provincial government spokesman Haji Attaullah Zaid said leader Hibatullah Akhundzada had imposed a “complete ban” on cable internet access in Balkh.
“This measure was taken to prevent immorality, and an alternative will be built within the country for necessities,” Mr Zaid said.
It was said to be connected to concerns around pornography – but this was never officially stated by the Taliban.
We have tried to reach the government for comment via satellite phone but with no success.
Image: No one knows how long the shutdown will last. Pic: Reuters
The blackout has disrupted phone services. In countries with limited telecom infrastructure, phone networks are often routed through fibre-optic systems which have now been disabled.
The lack of connectivity has raised immediate concern in the aid community. Amnesty International called it “reckless” and said the shutdown would have “far-reaching consequences for the delivery of aid, access to healthcare and girls’ education”.
After the Taliban banned school for girls over the age of 12, many in the country have been secretly studying online.
During the previous temporary blackouts, the Taliban did warn more was to come. But no one appears to have anticipated this – not ordinary citizens, not foreign officials here in Kabul, not big business, not the airlines or the hospitals.
It is an indication of how quickly this country can turn and the power the Taliban has to disrupt and reshape its future.
Internationally, many are raising concerns that this is an attempt by the Taliban at widespread censorship and further restriction of girls’ education.
Whatever the intention of their move, it has created an extreme scenario: no one in this country can currently contact anyone – for an emergency, for a family member, or for guidance – creating a major information vacuum.