Dr. Mathieu Lemay (PhD, EPFL, 2007) is the leader of the Signal Processing Group. His team has been developing solutions for physiological parameter monitoring in ambulatory settings for more than 20 years. The expertise of this group is internationally recognized by industrials and the scientific community, especially in the field of PPG in moving conditions (e.g. running), SpO2 at unusual locations (e.g. sternum or phalanx), physical activity profiling (e.g. physical activity classification) and novel circuits (ECG, impedance or PPG), continuously allowing a better integration, enhanced comfort and simplified use (wearable sensors integrated in textile, etc.), and activity monitoring. During the last years, the extensive experience in optical monitoring was further exploited to develop novel approaches for wrist-worn measurement of blood pressure, SpO2, atrial fibrillation detection or the detection of sleep stages.
