9 Portable measuring apparatus and portable measuring equipment for gathering, storing, comparing and evaluating data, in particular physiological signal data, relating to the head of a human being; medical hardware and software for non-invasive detection of conditions in the brain of a human being; head-mounted electronic devices and wearable electronic devices for conducting physiological measurements and for receiving, recording, comparing, evaluating and transmitting data, in particular physiological signal data, relating to the head of a human being; measuring devices and sensors to be worn by a human to gather, compare and evaluate data, in particular physiological signal data, and for determining sounds, vibrations, accelerations and motions relating to the head of a human being; computers, computer peripheral devices and computer hardware for the aforementioned goods; downloadable, recorded computer software and downloadable, recorded cloud computing software for database management for the aforementioned goods; downloadable, recorded computer software for processing data, in particular physiological signal data, data relating to the physical condition of a human being and patient demographics data, and for determining and tracking the physical condition of a human being; downloadable, recorded cloud computing software and downloadable, recorded computer software using machine learning in the field of clinical research and medical diagnosis