A simplified design of a cEEGrid ear-electrode adapter for the OpenBCI biosensing platform

• DOI: 10.1016/j.ohx.2022.e00357
• Publication Date: 2022-09-09T10:14:00Z
• Authors: Michael T. Knierim; Max Schemmer; Niklas Bauer
• Keywords: Biosignal; Adapter (computing)

We present a simplified design of an ear-centered sensing system built around the OpenBCI Cyton & Daisy biosignal amplifiers and flex-printed cEEGrid ear-EEG electrodes. This reduces number components that need to be sourced, mechanical artefacts on recording data through better cable placement, simplifies assembly. Besides describing how replicate use system, we highlight promising application scenarios, particularly observation large-amplitude activity patterns (e.g., facial muscle activities) frequency-band neural alpha beta band power modulations for mental workload detection). Further, examples common measurement methods removing them are provided, introducing prototypical adaptive filters this system. Lastly, as case, findings from single-user study highlights system's capability detecting jaw clenching events robustly when contrasted with 26 other activities. Thereby, could, instance, used devise applications reduce pathological teeth grinding (bruxism). These underline represents valuable prototyping platform advancing ear-based electrophysiological systems low-cost alternative current commercial alternatives.