Meet Gordon, probably the world’s first robot controlled exclusively by living brain tissue.

Stitched together from cultured rat neurons, Gordon’s primitive grey matter was designed at the University of Reading by scientists who unveiled the neuron-powered machine on Wednesday.

Their groundbreaking experiments explore the vanishing boundary between natural and artificial intelligence, and could shed light on the fundamental building blocks of memory and learning, one of the lead researchers told AFP.

“The purpose is to figure out how memories are actually stored in a biological brain,” said Kevin Warwick, a professor at the University of Reading and one of the robot’s principle architects.

Observing how the nerve cells cohere into a network as they fire off electrical impulses, he said, may also help scientists combat neurodegenerative diseases that attack the brain such as Alzheimer’s and Parkinson’s.

“If we can understand some of the basics of what is going on in our little model brain, it could have enormous medical spinoffs,” he said.

Looking a bit like the garbage-compacting hero of the blockbuster animation “Wall-E”, Gordon has a brain composed of 50,000 to 100,000 active neurons.

Once removed from rat foetuses and disentangled from each other with an enzyme bath, the specialised nerve cells are laid out in a nutrient-rich medium across an eight-by-eight centimetre (five-by-five inch) array of 60 electrodes.

This “multi-electrode array” (MEA) serves as the interface between living tissue and machine, with the brain sending electrical impulses to drive the wheels of the robots, and receiving impulses delivered by sensors reacting to the environment.

Because the brain is living tissue, it must be housed in a special temperature-controlled unit — it communicates with its “body” via a Bluetooth radio link.

The robot has no additional control from a human or computer.

From the very start, the neurons get busy. “Within about 24 hours, they start sending out feelers to each other and making connections,” said Warwick.

“Within a week we get some spontaneous firings and brain-like activity” similar to what happens in a normal rat — or human — brain, he added.

But without external stimulation, the brain will wither and die within a couple of months.

“Now we are looking at how best to teach it to behave in certain ways,” explained Warwick.

To some extent, Gordon learns by itself. When it hits a wall, for example, it gets an electrical stimulation from the robot’s sensors. As it confronts similar situations, it learns by habit.

To help this process along, the researchers also use different chemicals to reinforce or inhibit the neural pathways that light up during particular actions.

Gordon, in fact, has multiple personalities — several MEA “brains” that the scientists can dock into the robot.

“It’s quite funny — you get differences between the brains,” said Warwick. “This one is a bit boisterous and active, while we know another is not going to do what we want it to.”

Mainly for ethical reasons, it is unlikely that researchers at Reading or the handful of laboratories around the world exploring the same terrain will be using human neurons any time soon in the same kind of experiments.

But rats brain cells are not a bad stand-in: much of the difference between rodent and human intelligence, speculates Warwick, could be attributed to quantity not quality.

Rats brains are composed of about one million neurons, the specialised cells that relay information across the brain via chemicals called neurotransmitters.

Humans have 100 billion.

“This is a simplified version of what goes on in the human brain where we can look — and control — the basic features in the way that we want. In a human brain, you can’t really do that,” he said.

For colleague Ben Whalley, one of the fundamental questions facing scientists today is how to link the activity of individual neurons with the overwhelmingly complex behaviour of whole organisms.

“The project gives us a unique opportunity to look at something which may exhibit complex behaviours, but still remain closely tied to the activity of individual neurons,” he said.

It may have seemed like just another improbable scene from a Hollywood sci-fi flick – Tom Cruise battling against an army of robotic spiders intent on hunting him down.

But the storyline from Minority Report may not be quite as far fetched as it sounds.

British defence giant BAE Systems is creating a series of tiny electronic spiders, insects and snakes that could become the eyes and ears of soldiers on the battlefield, helping to save thousands of lives.

Prototypes could be on the front line by the end of the year, scuttling into potential danger areas such as booby-trapped buildings or enemy hideouts to relay images back to troops safely positioned nearby.

Soldiers will carry the robots into combat and use a small tracked vehicle to transport them closer to their targets.

Then they would swarm into the building and relay images back to the soldiers’ hand-held or wrist-mounted computers, warning them of any threats inside.

BAE Systems has just signed a £19million contract to develop the robots for the US Army.

Researchers hope they will eventually create machines that can fly like a butterfly
Enlarge the image

Plans for a creature that can crawl like a spider are said to be well developed, and researchers eventually hope to be able to create creatures that can slither like a snake or fly like a dragonfly.

While some of the creatures will be fitted with small cameras, others will be equipped with sensors that will be able to detect the presence of chemical, biological or radioactive weapons.

A computer-generated video from BAE Systems shows the tiny invaders being released by a soldier, before scouting out a suspect building, which is finally blown up by ground forces.

BAE Systems scientists from the UK and America plan an army of the electronic bugs, and have ambitions to equip every front-line soldier with them.

Programme manager Steve Scalera was inspired by the way creatures use their senses to detect danger.

“What we are doing is providing an enhanced awareness for soldiers, basically an extension to their eyes and ears,” he said.

“The creatures have external sensors. They can be tossed out into a building or a cave or even a pile of rubble and then send images back to the troops.

“The idea is to get a number of these working together – some tiny, some maybe up to a foot in length, and all going into a building together carrying out different tasks. Eventually we hope to have animals flying and slithering.

“The five-year programme has just started but we could have them with soldiers within six months, and then continue to develop the concept as the project goes along.”

Despite the high-tech gadgetry involved, BAE Systems insists once production is in full swing, each bug will cost no more than £100 to produce.

The Ministry of Defence declined to comment.

On the big screen, films like Robocop, Universal Soldier and forthcoming release Iron Man show man-machines with superhuman powers. But in Utah they are turning science fiction into reality.

We are at a research facility on the outskirts of Salt Lake City, ringed by beautiful snow-capped mountains. Once they held the Winter Olympics here; now they are testing endurance in other ways.

The aluminum limbs gleam in the brilliant sunshine, as the strange metal skeleton hangs from a safety harness at the outdoor testing site. It seems to be treading water; actually its programme is telling it to keep the hydraulic fluid in its joints moving.

Rex Jameson, a software engineer here at laboratories run by Sarcos, the robotics firm which designed the XOS exoskeleton, steps up and into the suit.

The lightweight aluminium exoskeleton, called XOS, senses Rex’s every move and instantly moves with him; it is almost like a shadow or a second skin. It is designed for agility that can match a human’s, but with strength and endurance that far outweigh our abilities.

With the exoskeleton on and fully powered up, Rex can easily pull down weight of more than 90 kilos, more than he weighs.

For the army the XOS could mean quicker supply lines, or fewer injuries when soldiers need to lift heavy weights or move objects around repeatedly. Initial models would be used as workhorses, on the logistics side.

Later models, the army hopes, could go into combat, carrying heavier weapons, or even wounded colleagues.

There are still problems to solve, not least how to create a mobile power supply that can last an effective length of time.

But the US military expects to take delivery of these early prototypes next year, and hopefully deploy some refined versions within eight years.

It is a long way off before we see robot soldiers that can fly or fire missiles - like in the movies - but the designers are already imagining future versions more reminiscent of Hollywood.

Thanks, Claire

An 81-year-old Australian man has shot himself dead with an elaborate suicide robot built using plans he downloaded from the Internet.

The Gold Coast man, who lived alone, left notes of his plans and thoughts as he struggled to come to terms with demands by interstate relatives that he move out his home and into care.

He spent hours searching the Internet for a way to kill himself, downloaded what he needed and then built a complex machine that would remotely fire a gun.

He set the device up in his driveway about 7 a.m. Wednesday, placed himself in front of it and set it in motion.

His notes explained that he chose the driveway as he knew there were tradesmen working next door who would find his body. The plan worked as the workmen heard the gunshots and ran to investigate.

The machine was attached to a .22 semi-automatic pistol loaded with four bullets.

It was able to fire multiple shots into the man’s head after he activated it.

The Most Advanced Quadruped Robot on Earth
BigDog is the alpha male of the Boston Dynamics family of robots. It is a quadruped robot that walks, runs, and climbs on rough terrain and carries heavy loads. BigDog is powered by a gasoline engine that drives a hydraulic actuation system. BigDog’s legs are articulated like an animal’s, and have compliant elements that absorb shock and recycle energy from one step to the next. BigDog is the size of a large dog or small mule, measuring 1 meter long, 0.7 meters tall and 75 kg weight.

BigDog has an on-board computer that controls locomotion, servos the legs and handles a wide variety of sensors. BigDog’s control system manages the dynamics of its behavior to keep it balanced, steer, navigate, and regulate energetics as conditions vary. Sensors for locomotion include joint position, joint force, ground contact, ground load, a laser gyroscope, and a stereo vision system. Other sensors focus on the internal state of BigDog, monitoring the hydraulic pressure, oil temperature, engine temperature, rpm, battery charge and others.

So far, BigDog has trotted at 3.3 mph, climbed a 35 degree slope and carried a 120 lb load.

BigDog is being developed by Boston Dynamics with help from Foster Miller, the Jet Propulsion Laboratory, and the Harvard University Concord Field Station.Development is funded by the DARPA Defense Sciences Office.