A wireless subdural-contained brain–computer interface with 65,536 electrodes

The device (BISC) is a single CMOS chip, thinned down to 50 μm, that slides into the subdural space (between skull and brain).

The specs are pretty wild:

Form Factor: It rests on the brain "like a piece of wet tissue paper."

Resolution: 65,536 electrodes with 1,024 simultaneous recording channels.

Bandwidth: 100 Mbps wireless link (custom ultra-wideband radio).

Power: Fully wireless via an external relay station.

The differentiator here seems to be the non-penetrating approach. Unlike Utah arrays or Neuralink threads that penetrate the cortex, this sits on top, which theoretically minimizes tissue scarring/reaction while maintaining high data throughput (100x current wireless BCIs).

Paper: Stable, chronic in-vivo recordings from a fully wireless subdural-contained 65,536-electrode brain-computer interface device