Evaluation of High-density Multi-channel Electrocorticographic Electrode Arrays in Rat Barrel Cortex

Abstract

Electrocorticography (ECoG) is one of the electrophysiological recording techniques, which has several beneficial features including low invasiveness, good signal quality, and long-term stability. We developed a novel high-density micro-ECoG array and evaluated it on the rat barrel cortex. Results of barrel-column mapping showed better performance of a high-density array on topographic delineation compared to a low-density array. Bending directions of a whisker could be estimated reliably using recorded ECoG signals.