Abstract: A method and apparatus of a device that trains or evaluates a model is described. In an exemplary embodiment, the device creates a loop network between a central aggregating node and a set of one or more worker nodes, where the loop network communicatively couples the central aggregating node. The device further receives and broadcasts a model training or evaluation request from one of the nodes in the loop network to one or more other nodes in the loop network.

Abstract: The invention relates to a self-contained device (1) for stimulating slow brain waves, capable of being worn by a person (P), in particular during a period of time when said person is sleeping. The device (1) comprises a supporting element (2), capable of surrounding the head of a person, and on which electrodes (3) are mounted in contact with the person in order to acquire a measurement signal that represents a physiological electrical signal of the person; an acoustic transducer (4) for emitting an acoustic signal (A) stimulating the inner ear of the person; and on-board conditioning and control electronics (5) for, in flexible real time, receiving the measurement signal and controlling the emission of an acoustic signal (A) synchronised with a predefined slow brain wave time pattern.

Abstract: According to the method to measure in real-time the phase of a pseudo-periodic physiological signal of a user: one provides a physiological signal of the user;—a trigonometric function determination module of a processor determines parameters of a trigonometric function, which minimize a distance between the physiological signal and the trigonometric function on the time interval ]ta; tb[; and—a phase determination module of a processor determines the phase of the physiological signal at time tb based on the phase of the trigonometric function at time tb.

Abstract: Disclosed is a method and device for determining a robust synthetic signal indicative of a bioelectrical activity of an individual. Two measurement signals representative of physiological electrical signals of an individual are continuously acquired by electrodes. Two time series of confidence indices associated with the measurement signals are constructed. A synthetic signal is determined from the measurement signals and from the time series of confidence indices.

Abstract: Disclosed is a self-contained device for stimulating slow brain waves, capable of being worn by a person, in particular during a period of time when the person is sleeping. The device includes a supporting element, capable of surrounding the head of a person, and on which electrodes are mounted in contact with the person in order to acquire a measurement signal that represents a physiological electrical signal of the person; an acoustic transducer for emitting an acoustic signal stimulating the inner ear of the person; and on-board conditioning and control electronics for, in flexible real time, receiving the measurement signal and controlling the emission of an acoustic signal synchronized with a predefined slow brain wave time pattern.