Effect of Electrode Distance and Size on Electrocorticographic Recordings in Human Sensorimotor Cortex.

ABSTRACT: Subdural electrocorticography (ECoG) is a valuable technique for neuroscientific research and for emerging neurotechnological clinical applications. As ECoG grids accommodate increasing numbers of electrodes and higher densities with new manufacturing methods, the question arises at what point the benefit of higher density ECoG is outweighed by spatial oversampling. To clarify the optimal spacing between ECoG electrodes, in the current study we evaluate how ECoG grid density relates to the amount of non-shared neurophysiological information between electrode pairs, focusing on the sensorimotor cortex. We simultaneously recorded high-density (HD, 3 mm pitch) and ultra-high-density (UHD, 0.9 mm pitch) ECoG, obtained intraoperatively from six participants. We developed a new metric, the norma

SUBMITTER: Geukes SH 

PROVIDER: S-EPMC11579129 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature