The Mind-Blowing Promise of Neural Implants
Kira Peikoff was the editor-in-chief of Leaps.org from 2017 to 2021. As a journalist, her work has appeared in The New York Times, Newsweek, Nautilus, Popular Mechanics, The New York Academy of Sciences, and other outlets. She is also the author of four suspense novels that explore controversial issues arising from scientific innovation: Living Proof, No Time to Die, Die Again Tomorrow, and Mother Knows Best. Peikoff holds a B.A. in Journalism from New York University and an M.S. in Bioethics from Columbia University. She lives in New Jersey with her husband and two young sons. Follow her on Twitter @KiraPeikoff.
You may not have heard of DARPA, the research branch of the Pentagon. But you're definitely familiar with some of the technology it has pioneered, like the Internet, Siri, and handheld GPS.
"Now we're going to try to go from this proof-of-concept all the way to commercial technologies that can powerfully affect patients' lives."
Last week in National Harbor, Maryland, DARPA celebrated its 60th anniversary by showcasing its latest breakthroughs and emerging research programs, one of which centers around using neurotechnology to enhance the capabilities of the human brain. This technology is initially being developed to help warfighters and veterans, but its success could have enormous implications for civilian patients and, eventually, mainstream consumers.
The field is moving ahead rapidly. Fifteen years ago, a monkey named Aurora used a brain-machine interface to control a cursor on a computer screen. In 2014, DARPA's mind-controlled prosthetic arm for amputees won approval from the Food and Drug Administration.
Since then, DARPA has continued to push neurotechnology to new heights. Here are three of their research programs that are showing promise in early human testing:
1) A NEURAL IMPLANT HELP MANAGE PSYCHIATRIC ILLNESS
More than 2.2 million veterans and 44 million civilians are living with some form of psychiatric illness, and medications don't work for everyone. DARPA set out to create new options for people living with debilitating anxiety, depression, and PTSD.
"We can get somebody back to normal. It's a whole new set of tools for physicians," said Justin Sanchez, Director of the Biological Technologies Office at DARPA.
He told the audience about a woman living with both epilepsy and extreme anxiety, who has a direct neural interface that reads her brain's signals in real time and can be modulated with stimulation. He shared a recent video of her testing the device:
"Now we're going to try to go from this proof-of-concept all the way to commercial technologies that can powerfully affect patients' lives," Sanchez said.
2) A NEURAL IMPLANT TO HELP IMPROVE MEMORY
"We are right at the cusp" of improving memory recall with direct neural interfaces, Sanchez said.
All day long, our brains shift between poor and good memory states. A brain-computer interface can read the signals of populations of neurons in the lateral temporal cortex. The device continuously monitors the state of the brain and delivers stimulation within a fraction of a second after detecting a poor memory state, to improve the person's memory performance.
The improved memory lasts only seconds, so the system "delivers stimulation as needed in a closed loop to keep the performance in a good state, because of this natural variability of performance," said Dan Rizzuto, founder of NiaTherapeutics, whose technology was developed with support from DARPA and the United States BRAIN Initiative.
Check out this recently shot video of a patient testing the device, which Sanchez called "a breakthrough moment":
About 400 patients have been tested with this technology so far. In a pilot study whose data have not yet been published, patients with traumatic brain injury showed improvement in recall of around 28 percent, according to Rizzuto.
He estimates that potential FDA approval of the device for patients with traumatic brain injury is still 7 to 8 years away. The technology holds the potential to help many other kinds of patients as well.
"We believe this device could also be used to treat Alzheimer's because it's not specific to any brain pathology but based on a deep understanding of the way human memory works," Rizzuto said.
3) A NEURAL IMPLANT TO REVOLUTIONIZE PROSTHETICS FOR WARFIGHTERS AND VETERANS
Since 2006, DARPA has run a program to revolutionize prosthetics. The latest advances allow amputees to actually feel again with their bionic limbs.
Sensors in a prosthetic hand relay information to an interface in the brain that allows the person to detect which of their "fingers" are being touched, while their eyes are closed:
WHAT COMES NEXT?
DARPA is now turning its attention to non-surgical, non-invasive neurotechnology. Researchers hope to use advanced sensor technology to detect signals from neurons without putting any electrodes directly inside the brain. Under the direction of program manager Dr. Al Emondi, the N³ program is about to launch soon and plans to run for four or five years.
"We haven't even scratched the surface of what a human brain's capability is," said Dr. Geoffrey Ling, the Founding Director of the Biological Technologies Office. "When we can make this a non-invasive consumer technology, this will explode. It will take on a life of its own."
Then, inevitably, the hard questions will follow.
As Sanchez put it: "Will society consider some form of neural enhancement a personal choice like braces? Could there be a disturbing gap for people who have neurotech and those who don't? We must come together and all think over the horizon. How the story unfolds ultimately depends on all of us."
Kira Peikoff was the editor-in-chief of Leaps.org from 2017 to 2021. As a journalist, her work has appeared in The New York Times, Newsweek, Nautilus, Popular Mechanics, The New York Academy of Sciences, and other outlets. She is also the author of four suspense novels that explore controversial issues arising from scientific innovation: Living Proof, No Time to Die, Die Again Tomorrow, and Mother Knows Best. Peikoff holds a B.A. in Journalism from New York University and an M.S. in Bioethics from Columbia University. She lives in New Jersey with her husband and two young sons. Follow her on Twitter @KiraPeikoff.
A sleek, four-foot tall white robot glides across a cafe storefront in Tokyo’s Nihonbashi district, holding a two-tiered serving tray full of tea sandwiches and pastries. The cafe’s patrons smile and say thanks as they take the tray—but it’s not the robot they’re thanking. Instead, the patrons are talking to the person controlling the robot—a restaurant employee who operates the avatar from the comfort of their home.
It’s a typical scene at DAWN, short for Diverse Avatar Working Network—a cafe that launched in Tokyo six years ago as an experimental pop-up and quickly became an overnight success. Today, the cafe is a permanent fixture in Nihonbashi, staffing roughly 60 remote workers who control the robots remotely and communicate to customers via a built-in microphone.
More than just a creative idea, however, DAWN is being hailed as a life-changing opportunity. The workers who control the robots remotely (known as “pilots”) all have disabilities that limit their ability to move around freely and travel outside their homes. Worldwide, an estimated 16 percent of the global population lives with a significant disability—and according to the World Health Organization, these disabilities give rise to other problems, such as exclusion from education, unemployment, and poverty.
These are all problems that Kentaro Yoshifuji, founder and CEO of Ory Laboratory, which supplies the robot servers at DAWN, is looking to correct. Yoshifuji, who was bedridden for several years in high school due to an undisclosed health problem, launched the company to help enable people who are house-bound or bedridden to more fully participate in society, as well as end the loneliness, isolation, and feelings of worthlessness that can sometimes go hand-in-hand with being disabled.
“It’s heartbreaking to think that [people with disabilities] feel they are a burden to society, or that they fear their families suffer by caring for them,” said Yoshifuji in an interview in 2020. “We are dedicating ourselves to providing workable, technology-based solutions. That is our purpose.”
Shota Kuwahara, a DAWN employee with muscular dystrophy. Ory Labs, Inc.
Wanting to connect with others and feel useful is a common sentiment that’s shared by the workers at DAWN. Marianne, a mother of two who lives near Mt. Fuji, Japan, is functionally disabled due to chronic pain and fatigue. Working at DAWN has allowed Marianne to provide for her family as well as help alleviate her loneliness and grief.Shota, Kuwahara, a DAWN employee with muscular dystrophy, agrees. "There are many difficulties in my daily life, but I believe my life has a purpose and is not being wasted," he says. "Being useful, able to help other people, even feeling needed by others, is so motivational."
When a patient is diagnosed with early-stage breast cancer, having surgery to remove the tumor is considered the standard of care. But what happens when a patient can’t have surgery?
Whether it’s due to high blood pressure, advanced age, heart issues, or other reasons, some breast cancer patients don’t qualify for a lumpectomy—one of the most common treatment options for early-stage breast cancer. A lumpectomy surgically removes the tumor while keeping the patient’s breast intact, while a mastectomy removes the entire breast and nearby lymph nodes.
Fortunately, a new technique called cryoablation is now available for breast cancer patients who either aren’t candidates for surgery or don’t feel comfortable undergoing a surgical procedure. With cryoablation, doctors use an ultrasound or CT scan to locate any tumors inside the patient’s breast. They then insert small, needle-like probes into the patient's breast which create an “ice ball” that surrounds the tumor and kills the cancer cells.
Cryoablation has been used for decades to treat cancers of the kidneys and liver—but only in the past few years have doctors been able to use the procedure to treat breast cancer patients. And while clinical trials have shown that cryoablation works for tumors smaller than 1.5 centimeters, a recent clinical trial at Memorial Sloan Kettering Cancer Center in New York has shown that it can work for larger tumors, too.
In this study, doctors performed cryoablation on patients whose tumors were, on average, 2.5 centimeters. The cryoablation procedure lasted for about 30 minutes, and patients were able to go home on the same day following treatment. Doctors then followed up with the patients after 16 months. In the follow-up, doctors found the recurrence rate for tumors after using cryoablation was only 10 percent.
For patients who don’t qualify for surgery, radiation and hormonal therapy is typically used to treat tumors. However, said Yolanda Brice, M.D., an interventional radiologist at Memorial Sloan Kettering Cancer Center, “when treated with only radiation and hormonal therapy, the tumors will eventually return.” Cryotherapy, Brice said, could be a more effective way to treat cancer for patients who can’t have surgery.
“The fact that we only saw a 10 percent recurrence rate in our study is incredibly promising,” she said.