In what is believed to be a medical first, researchers from Johns Hopkins Medicine (JHM) and the Johns Hopkins University Applied Physics Laboratory (APL) have enabled a quadriplegic man to control a pair of prosthetic arms with his mind.
In January 2019, surgeons implanted six electrodes into the brain of Robert “Buz” , during a 10-hour operation. The goal was to improve the sensation in his hands and enable him to mentally operate his prostheses. For more than three decades after a surfing accident while in his teens, Chmielewski has been paralyzed with only minimal movement in his arms and hands.
Now, almost two years into the joint JHM/APL research study following the surgery, has reached an important milestone — he can now use both of his robotic appendages to perform simple tasks such as feeding himself.
“This type of research, known as brain-computer interface [BCI], has for the most part focused on only one arm, controlled from only one side of the brain,” says Pablo Celnik, M.D., professor and director of physical medicine and rehabilitation at the Johns Hopkins University School of Medicine and a member of the research team. “Thus, being able to control two robotic arms performing a basic activity of daily living — in this case, cutting a pastry and bringing it to the mouth using signals detected from both sides of the brain via implanted electrodes — is a clear step forward to achieve more complex task control directly fed from the brain.”
“Simultaneous brain-machine interface control of two limbs is a particular challenge because it’s not a simple 1+1 summation of what the left arm is doing plus what the right arm is doing in the brain, but more like trying to calculate the sum of the two arms as 1 plus 1 equals 3.8,” adds Gabriela Cantarero, Ph.D., assistant professor of physical medicine and rehabilitation at the Johns Hopkins University School of Medicine and a member of the research team.
The technology uses a system of devices that automates a portion of the robotic control with artificial intelligence.
Top Image Credit: Johns Hopkins Hospital
Post by Amanda Scott, NA CEO. Follow her on twitter @tantriclens
Thanks to Heinz V. Hoenen. Follow him on twitter: @HeinzVHoenen

News
Lightning sparks scientists’ design of ultraviolet-C device for food sanitization
Scientists at the University of Illinois Urbana-Champaign have developed a portable, self-powered ultraviolet-C device called the Tribo-sanitizer that can inactivate two of the bacteria responsible for many foodborne illnesses and deaths. The Tribo-sanitizer's UVC [...]
3D Eye Scans Emerge as a Crucial Tool in Combating Kidney Disease
A new study indicates that 3D retinal scans could revolutionize the early detection and monitoring of kidney disease, offering a non-invasive and efficient diagnostic tool. 3D eye scans can reveal vital clues about kidney [...]
Researchers develop a blood test to identify individuals at risk of developing Parkinson’s disease
Research carried out at Oxford's Nuffield Department of Clinical Neurosciences has led to the development of a new blood-based test to identify the pathology that triggers Parkinson's disease before the main symptoms occur. This [...]
“Challenging the Paradigm” – Scientists Develop New Approach To Stop Cancer Growth
Biochemists at Case Western Reserve are concentrating on the degradation of a key protein that drives cancer; represents a major shift in research. Biochemical researchers at Case Western Reserve University have discovered a a new function [...]
Researcher develops a chatbot with an expertise in nanomaterials
A researcher has just finished writing a scientific paper. She knows her work could benefit from another perspective. Did she overlook something? Or perhaps there's an application of her research she hadn't thought of. [...]
Research shows human behavior guided by fast changes in dopamine levels
What happens in the human brain when we learn from positive and negative experiences? To help answer that question and better understand decision-making and human behavior, scientists are studying dopamine. Dopamine is a neurotransmitter [...]
Tiny robots made from human cells heal damaged tissue
The ‘anthrobots’ were able to repair a scratch in a layer of neurons in the lab. Scientists have developed tiny robots made of human cells that are able to repair damaged neural tissue1. The [...]
Antimicrobial Resistance – A Global Concern
Key facts Antimicrobial resistance (AMR) is one of the top global public health and development threats. It is estimated that bacterial AMR was directly responsible for 1.27 million global deaths in 2019 and contributed to [...]
Advancing Pancreatic Cancer Treatment with Nanoparticle-Based Chemotherapy
Pancreatic cancer, a particularly lethal form of cancer and the fourth leading cause of cancer-related deaths in the western world, often remains undiagnosed until its advanced stages due to a lack of early symptoms. [...]
The ‘jigglings and wigglings of atoms’ reveal key aspects of COVID-19 virulence evolution
Richard Feynman famously stated, "Everything that living things do can be understood in terms of the jigglings and wigglings of atoms." This week, Nature Nanotechnology features a study that sheds new light on the evolution of the coronavirus [...]
AI system self-organizes to develop features of brains of complex organisms
Cambridge scientists have shown that placing physical constraints on an artificially-intelligent system—in much the same way that the human brain has to develop and operate within physical and biological constraints—allows it to develop features [...]
How Blind People Recognize Faces via Sound
Summary: A new study reveals that people who are blind can recognize faces using auditory patterns processed by the fusiform face area, a brain region crucial for face processing in sighted individuals. The study employed [...]
Treating tumors with engineered dendritic cells
Cancer biologists at EPFL, UNIGE, and the German Cancer Research Center (Heidelberg) have developed a novel immunotherapy that does not require knowledge of a tumor's antigenic makeup. The new results may pave the way [...]
Networking nano-biosensors for wireless communication in the blood
Biological computing machines, such as micro and nano-implants that can collect important information inside the human body, are transforming medicine. Yet, networking them for communication has proven challenging. Now, a global team, including EPFL [...]
Popular Hospital Disinfectant Ineffective Against Common Superbug
Research conducted during World Antimicrobial Awareness Week examines the effects of employing suggested chlorine-based chemicals to combat Clostridioides difficile, the leading cause of antibiotic-related illness in healthcare environments worldwide. A recent study reveals that a [...]
Subjectivity and the Evolution of AI Philosophy
An Historical Overview of the Philosophy of Artificial Intelligence by Anton Vokrug Many famous people in the philosophy of technology have tried to comprehend the essence of technology and link it to society and human [...]