Evaluation of a Novel Wearable EEG/EOG Sensor for Real-Time Operator State Monitoring

Real-time monitoring of pilots' cognitive state using psychophysiological measurements is critical for aviation safety. However, current laboratory-grade electroencephalography (EEG) devices require extensive wired electrodes and setup, limiting feasibility for in-flight use. This study evaluated wireless prototypes consisting of a four channel EEG and two channel electrooculography (EOG) forehead sensor to assess their potential to monitor cognitive state during flight. The sensor utilizes flexible dry electrodes and minimal setup. Comparisons to laboratory EEG were done across varying workload tasks. However, signal contamination at 30 Hertz (Hz), potentially from hardware issues, prevented EEG data analysis. Enhanced durability is critical for unreliable environmental settings along with pre-deployment functionality checks. Despite current issues, the compact sensor shows promise if functioning reliably. Considerable further development and rigorous in-flight testing is required before adoption. With refinements ensuring robust data quality, the sensor concept holds promise for objectively monitoring hazardous states like excessive workload and fatigue in-flight. Once thoroughly validated for flight conditions, similar forehead prototypes may someday fill the pressing need for real-time mental state monitoring to enhance aviation safety.