BIOELECTRIC ACTIVITY RECORDING BASED ON A SINGLE ELECTRODE FOR USE ON WEARABLE DEVICES Topics: Biomedical Instrumentation; Biomedical Sensors; Biotelemetry; Electrocardiography and Heart Monitoring; Health Monitoring Devices In Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 0BIOSTEC, 130-134, 2011 , Rome, Italy