Low-Power Wireless Multi-Channel Surface Electromyography Sensor for Facial Muscle Sensing

Today's electromyography (EMG) sensor systems usually require complicated setups for data acquisition and processing. Especially for facial muscle sensing, small and portable systems are required to allow longer and more realistic measurements. Research in the area of affective states and distinct emotions requires larger studies with extended recording times. Therefore, the acceptance of the sensor by the subjects is crucial. In collaboration with a team of clinical psychologists, this work presents a Bluetooth Low Energy 5.4 enabled wireless surface EMG sensor with edge pre-processing and post-processing on a PC for data evaluation.