When assistive eye tracking fails: Communicating with a brainstem-stroke patient through the pupillary accommodative response - A case study. - Andres Eduardo Lorenzo Villalobos; Silvia Giusiano; Luca Musso; Claudio de'Sperati; Alessandra Riberi; Piotr Spalek; Andrea Calvo; Cristina Moglia; Silvestro Roatta (Biomed. Signal Process. Control., 2021)