Core Components

Electrodes for non-invasive brain-computer interfaces have long traded off conductivity, conformity to the skin and durability. A conductive hydrogel made by in situ directional freezing copolymerization forms vertically aligned ion channels and an interconnected nanoporous network, giving it higher conductivity than conventional hydrogel electrodes. In preliminary P300 and steady-state visual evoked potential (SSVEP) experiments, it recorded signals comparable in quality to conventional wet- and dry-electrode benchmarks, while also offering a tissue-matched compressive modulus, high stretchability, skin adhesion and rapid self-healing. The paper presents these experiments as a feasibility demonstration and reports no data on long-term wear stability, scaled-up fabrication or human clinical trials.

Neuracle Medical Technology (Shanghai) Co., Ltd. has registered a cortical electrode, model 1014-35, in the medical device unique identification (UDI) database of China's National Medical Products Administration (NMPA), under registration certificate Guoxiezhuzhun 20263120536. Neuracle's product line spans EEG acquisition equipment and implantable electrodes. The electrode belongs to an implantable EEG electrode kit (cortical electrode, blank electrode, electrode dilator, tunneler, torque wrench, lead fixation clip, fixation screws and electrode protective sleeve) that holds its own registration certificate and is also a component of an implantable BCI hand motor function compensation system. That system comprises a BCI implant, the electrode kit, an EEG signal transceiver, a pneumatic glove, a single-use surgical toolkit, and three software packages for EEG decoding, medical testing and clinical management.

On May 8, 2026, Apple notified the European Commission under Article 14 of the Digital Markets Act that it would, through a subsidiary, acquire certain assets of Sonera and offer jobs to and hire certain Sonera employees. The deal value was not disclosed and neither party has announced it; May 8 is the filing date, and no closing date has been made public. The Commission describes Sonera as a company developing chip-scale magnetic sensors. Founded in 2018 in Berkeley, California, as a University of California, Berkeley spinout, Sonera builds acoustically driven ferromagnetic resonance magnetic sensors that operate at room temperature and has raised about $20 million.

To move from lab prototypes to long-term clinical systems, implantable brain-computer interfaces must place thousands to millions of electrodes several millimeters to centimeters deep in brain tissue without heating it by more than about 1 degree Celsius. This review benchmarks inductive, mid-field, RF, ultrasonic, magnetoelectric, optical, UWB and electro-quasistatic wireless links against three clinical axes (depth, size and data rate), noting that almost every clinically relevant implant is weakly coupled, with coupling coefficients of only 10^-3 to 10^-1. Within a communication budget of about 10 mW, narrowband high-Q links suit power transfer and low-speed data, but at 1-10 nJ/b they cannot deliver the more than 10 Mbps to tens of Gbps uplinks that interfaces with a thousand or more channels require. The study is a preprint and has not been peer reviewed.

On 31 March 2026 Hubei's provincial science and technology department approved the formation of a provincial brain-computer interface technology innovation centre, led by Tongji Hospital in Wuhan together with 12 organisations including Huazhong University of Science and Technology and Hubei Optics Valley Laboratory. Chinese reports describe it as the country's first provincial BCI platform positioned as comprehensive and full-chain. Its stated priorities are neural signal decoding, domestic sourcing of core components, and refining both non-invasive and implanted approaches. It is headed by Tang Zhouping, the hospital's party secretary.