A stroke happens when blood flow to part of the brain is blocked or when a blood vessel bursts.
Brain cells can begin to die within minutes, and many people are left with long-term disabilities even after emergency treatment.
One of the most common problems after a stroke is weakness or loss of movement in one arm or hand.
Many survivors also lose part of their sense of touch or no longer feel that the affected arm belongs to their body in the same way as before.
These problems can make everyday activities, such as eating, dressing, cooking, or writing, much more difficult.
Traditional rehabilitation usually focuses on helping patients practice movements through physiotherapy and occupational therapy.
While this approach is helpful, recovery often slows after the first few months. Researchers are therefore looking for new ways to improve recovery even long after a stroke.
Scientists from the Medical University of Vienna and ETH Zurich have now developed a new rehabilitation system called MultiSensy. Their study was published in Nature Medicine. The platform combines virtual reality with gentle electrical stimulation delivered through small electrodes placed on the skin.
Patients wear a virtual reality headset and perform interactive exercises that copy everyday tasks, including reaching, picking up objects, pinching, and turning the forearm. At the same time, the electrical stimulation activates sensory nerves so users feel as though they are actually touching virtual objects.
The researchers wanted rehabilitation to train movement, touch, and body awareness together instead of treating movement alone. The system also adjusts the difficulty of each exercise according to the patient’s ability, making the training more personal and engaging. The clinical trial involved 34 people who had experienced a stroke at least three months earlier.
Participants either completed a three-week MultiSensy program with 12 sessions or received standard rehabilitation using physiotherapy and occupational therapy. Patients using MultiSensy improved more in arm and hand movement than those receiving conventional treatment.
Their scores on standard tests measuring upper-limb recovery and daily hand function increased almost twice as much as those in the control group. The new system also improved touch sensation and helped patients develop a better awareness of the position and size of their affected arm.
Another advantage is that the platform automatically records detailed movement information, allowing doctors to monitor progress objectively and adjust treatment when needed. These findings are encouraging because they suggest that combining movement training with sensory stimulation may improve recovery after stroke.
However, this was a small feasibility study involving only 34 participants over three weeks. Larger clinical trials with longer follow-up will be needed before doctors know whether the benefits last and whether the technology should become part of routine care.
Even so, the research offers hope that future home-based virtual rehabilitation could help stroke survivors continue improving months or even years after their stroke.
If you care about stroke, please read studies about how to eat to prevent stroke, and diets high in flavonoids could help reduce stroke risk.
For more health information, please see recent studies about how Mediterranean diet could protect your brain health, and wild blueberries can benefit your heart and brain.
Source: Medical University of Vienna.
