We recorded neural activity using standard clinical ECoG grids, micro-ECoG grids, and intracortical micro-electrodes from human patients.
We found that non-penetrating micro-ECoG grid recorded neural activity at scales closer to penetrating intracortical micro-electrodes than clinical ECoG grids.
These novel micro-electrode technologies are enabling examination of cortical activity at the scale of cortical columns and could lead to improved diagnostics and neural prosthetic applications.