Thin-Film Grid Electrode
Flexible polymer electrode array for surface EEG, epidural, or subdural ECoG recording and stimulation.
A thin-film grid electrode is a flexible polymer electrode array designed for skull-surface EEG, epidural, or subdural ECoG recording and/or surface stimulation. Multiple electrode sites record biopotentials or deliver stimulation current.
Why it matters: Thin-film grids provide conformal contact with curved brain or skull surfaces, enabling high-density surface recordings that capture neural activity across large cortical areas with minimal tissue damage.
Key specifications: Site count, spacing, total area, substrate material (polyimide or parylene), and site material determine spatial resolution and signal quality. Available in custom layouts for specific brain regions.
Applications: Chronic EEG monitoring, intraoperative ECoG mapping, brain-machine interface research, and spinal cord surface recording.