Chinese Academy of Sciences announced a major breakthrough in brain-computer interface (BCI) technology
On November 4, 2025, researchers from the Shanghai Institute of Microsystems and Information Technology, part of the Chinese Academy of Sciences, announced a major advancement in brain-computer interface (BCI) technology. Their team developed a minimally invasive neural implant that combines a deformable microelectrode array with a silk protein scaffold capable of automatic shape transformation. This innovation allows the device to unfold and attach precisely to deep brain regions such as the caudate nucleus and ventricular walls, offering a new solution for long-term neurological monitoring.
The implant is delivered through a standard surgical catheter into the lateral ventricle of the brain. Once inside the cerebrospinal fluid, the silk scaffold activates its shape-memory function, causing the device to expand and conform to the brain's internal surfaces like a custom-fit film. This approach solves a long-standing challenge in deep brain monitoring: traditional penetrating electrodes can reach deep nuclei but risk damaging tissue and lack long-term stability, while flexible planar electrodes are safer but cannot be implanted deep within the brain. The new system merges both benefits-minimal invasiveness and precise adhesion.
To ensure high-quality data collection, the implant features a coplanar metal shielding design that suppresses power frequency noise, maintaining a high signal-to-noise ratio even in the dynamic fluid environment of the brain. In tests using a Parkinson's disease sheep model, the interface successfully captured β oscillations and tracked neural responses to levodopa treatment. It maintained stable electrical performance and biocompatibility for up to four weeks, demonstrating its potential for chronic monitoring applications.
This breakthrough fills a critical gap in wide-coverage, minimally invasive monitoring of deep brain nuclei. It opens new possibilities for diagnosing and studying neurological disorders such as Parkinson's and Alzheimer's disease. The implant's ability to conform to complex brain structures without causing damage represents a significant step forward in neurotechnology and clinical neuroscience.
The Shanghai Institute of Microsystems and Information Technology is a leading research division under the Chinese Academy of Sciences. It specializes in microelectronics, biomedical engineering, and advanced sensor technologies. The institute's work in brain-computer interfaces aims to revolutionize clinical diagnostics and therapeutic tools for neurological diseases.
