Scientists have unveiled a groundbreaking brain stimulation technique that is offering hope to people with spinal cord injuries, enabling them to walk more easily. The method involves electrically stimulating a specific region of the brain, a discovery that has already made a significant difference in the lives of patients like 54-year-old Wolfgang Jaeger.
“Now when I see a staircase with just a few steps, I know I can handle it on my own,” Jaeger shared, expressing how the technique has boosted his mobility and independence.
The technique is designed for individuals whose spinal cord injuries have not completely severed the connection between the brain and spinal cord, meaning they retain some movement in their legs. By targeting the lateral hypothalamus—a region of the brain traditionally known for regulating arousal, feeding, and motivation—the researchers were able to amplify signals that promote walking.
Using deep brain stimulation, a procedure commonly used to treat Parkinson’s disease, surgeons implant electrodes in the brain connected to a device placed in the patient’s chest. This device sends electrical pulses to the brain, enhancing the signals to the spinal cord.
“We were surprised to find that stimulating the lateral hypothalamus immediately improved walking in our patients,” neuroscientist Gr\u00e9goire Courtine from Switzerland’s Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne explained.
Another participant in the trial, a woman with an incomplete spinal cord injury, described the sensation when the device was activated: “I feel my legs,” she said, and as the electrical current increased, she added, “I feel the urge to walk.”
The patients could control the device as needed and underwent months of rehabilitation and strength training. Jaeger set a personal goal to climb stairs independently\u2014a goal he has now achieved.
“Walking up and down the stairs was no problem,” Jaeger recounted about a holiday encounter with eight steps leading to the sea. “It’s a great feeling when you don’t have to rely on others all the time.”
Over time, both patients experienced improvements even when the device was turned off, suggesting lasting benefits from the treatment.
While the results are promising, Courtine emphasized that the technique may not be suitable for everyone. Its effectiveness depends on how much signal transmission remains between the brain and spinal cord.
The researchers believe that combining this brain stimulation with spinal cord stimulation could offer even greater recovery prospects for those with spinal injuries.
Reference(s):
cgtn.com
