First brain chip creator calls tech at 'tipping point'

The Evolution of Brain-Computer Interfaces

Decades after the first brain chip enabled a paralysed person to move a cursor on a screen, turn words into speech, and control a robotic arm, the creator behind the technology believes the devices are at a “tipping point” and could soon control speech or a computer. This breakthrough has opened up new possibilities for individuals with neurological conditions, offering hope for restoring lost functions.

Professor John Donoghue, who developed the first brain chip called BrainGate at Brown University in Rhode Island, recently received the Queen Elizabeth Prize for engineering. His work has paved the way for advancements in brain-computer interfaces (BCIs), which are now being explored by various companies and research institutions around the world.

Through clinical trials, the BrainGate team continues to make progress in using BCIs to restore function lost due to neurological injury or illness. One example is Elon Musk's Neuralink, a company that builds on Professor Donoghue’s early work. Neuralink's technology involves electrodes connected to a computer chip that can detect nerve signals in the brain. So far, 12 clinical trial patients have used Neuralink devices to control computers with their thoughts.

Musk envisions future capabilities that go beyond basic control, including streaming music directly to the brain, restoring vision for blind people, and enabling superhuman levels of communication through telepathy. These ambitious goals highlight the potential of BCIs to revolutionize how humans interact with technology and each other.

Breakthroughs in BCI Technology

Researchers in San Francisco have also made significant strides in developing a robot arm that receives signals from the brain to a computer. This allows a man who cannot speak or move to interact with objects, demonstrating the transformative power of BCIs. However, when the brain chip was first created, scientists were unsure whether a paralysed person had any brain activity associated with movement.

"At the time, we didn't know whether a paralysed person would have any brain activity at all associated with movement," Professor Donoghue explained. "There were people who thought maybe that whole area of the brain just shuts down. We showed that there was not only activity, but a lot of it. The question then became: What can we do with it?"

When the team turned the device on for the first time, it was busy with brain activity, proving their critics wrong. The brain chip was able to decode signals from the motor cortex of a volunteer’s brain to turn words into speech and move a robotic arm.

Challenges in BCI Development

Despite these advancements, making implants safe enough to stay in the brain forever remains a challenge. Professor Donoghue noted that heat from the device and possible infections are major hurdles. "If you have a device that's got a processor of electronics on it, it gets hot, just like your phone gets really hot," he told Sky News. "The brain can only tolerate a degree or two."

However, he believes well-funded companies like Neuralink are likely to get a device approved to help people with severe paralysis. "We are I think at a tipping point," he added. "If you want to control a computer, or you want to be able to restore speech, I think there's no reason why we can't see those as fast as somebody can produce a device that's approved."

As the field of brain-computer interfaces continues to evolve, the potential for these technologies to improve lives is immense. From restoring mobility to enhancing communication, the future of BCIs holds promise for a wide range of applications. With ongoing research and development, the dream of seamless human-machine interaction may soon become a reality.