Cost-efficient and Custom Electrode-holder Assembly Infrastructure for EEG Recordings

摘要: Mobile electroencephalogram (EEG)-sensing technologies have rapidly progressed and made the access of neuroelectrical brain activity outside laboratory in everyday life more realistic. However, most existing EEG headsets exhibit a fixed design, whereby its immobile montage terms electrode density coverage inevitably poses great challenge with applicability generalizability to fundamental study application brain-computer interface (BCI). In this study, cost-efficient, custom EEG-electrode holder infrastructure was designed through assembly primary components, including sensor-positioning ring, inter-ring bridge, bridge shield. It allows user (re)assemble compact grid accommodate desired number electrodes only regions interest iteratively adapt it given head size for optimal electrode-scalp contact signal quality. This empirically demonstrated easy-to-fabricate nature by low-end fused deposition modeling (FDM) 3D printer proved practicability capturing event-related potential (ERP) steady-state visual-evoked (SSVEP) signatures over 15 subjects. paper highlights possibilities cost-efficient electrode-holder replaceable montage, flexibly retrofitted an unlimited fashion, individual distinctive studies BCI applications.