MEMS-based High-Density Ultra-Conformal μECOG Electrode Array for Real-Time Motor Decoding

In this study, we present a high-density, high-channel-count micro-electrocorticographic (μECoG) electrode array for real-time motor decoding. The 256-channel μECoG electrode arrays, based on MEMS processes, possess excellent flexibility and mechanical robustness, allowing them to conform to the cortical surface and enabling the acquisition of high-quality ECoG signals. The advanced brain-computer interface (BCI) system was applied to a Labrador dog and high accurate real-time motor decoding was achieved, showing the advantages of high-resolution ECoG sampling. Our method demonstrates the potential for controlling a cursor with the ECoG signals, offering the possibility of reconstructing motor functions and synthesizing avatars.