Researchers call it a step toward more personalized, responsive therapies
Written by Andrea Lobo | March 9, 2026
- A brain implant accurately detects walking in Parkinson's patients in real time.
- It records neural activity from movement-related brain regions with more than 95% accuracy.
- The technology aims to enable personalized, adaptive deep brain stimulation therapies.
A fully implanted brain device can identify when people with Parkinson’s disease are walking during their everyday lives, according to a new study from the University of California, San Francisco (UCSF).
By recording neural activity from movement-related brain regions while patients went about their normal routines at home, researchers detected walking with more than 95% accuracy. Wearable sensors were used to verify the movements.
“This is the first demonstration that a fully implanted device can be used to detect a specific movement state in humans during real-world activity,” senior study author Doris Wang, MD, PhD, a neurosurgeon and associate professor of neurological surgery at UCSF, said in a university news story. “Our findings show that it is possible to identify meaningful neural signals outside the laboratory, which is an important step toward more personalized and responsive neuromodulation therapies.”
The results were described in the study, “At-home movement state classification using totally implantable cortical-basal ganglia neural interface,” published in Science Advances.
Implanted device recorded neural activity from 2 brain regions
Parkinson’s disease is caused by the loss of dopamine-producing nerve cells in the brain. This leads to motor symptoms, including slowed movements, rigidity, and tremor. Patients often experience walking issues, such as short steps in which the feet slide rather than lifting from the ground, difficulty initiating movement, and instability during turning.
Deep brain stimulation (DBS) is a surgical treatment that involves implanting electrodes connected to a neurostimulator to deliver continuous stimulation to targeted brain areas, helping ease Parkinson’s motor symptoms. However, walking issues fluctuate during the day and can be unresponsive to DBS.
Because different Parkinson’s symptoms respond to different stimulation settings, doctors need reliable ways to detect what a person is doing in daily life, such as walking or standing. So far, this has not been extensively studied in real-world settings.
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