Abstract: The present invention relates to a device, system and method for determining an emotional state of a user based on emotion-induced cortisol estimation.

Abstract: The present invention relates to a wearable sensor device and method for a thermogenic and/or psychogenic stress response of a subject. The wearable sensor device comprises a first electrode (11) configured to contact a first non-glabrous skin part of the subject, a second electrode (12) configured to contact a second non-glabrous skin part of the subject, a third electrode (13) configured to contact a glabrous skin part of the subject, and a skin conductance sensor (14) configured to provide a voltage signal between a positive input terminal (141) and a negative input terminal (142) and to measure a skin conductance signal at an output terminal (143). A switching arrangement (15) switches connections between the first to third electrodes and the positive and negative input terminals of the skin conductance sensor between at least three switching states.

Abstract: The present invention relates to device, system and method for providing bio-feedback to a user. The device comprises an interface (11) configured to obtain skin conductance measurements of a user and to output user instructions and bio-feedback information; and a processing unit (12) configured to generate user instructions indicating one or more actions to follow by the user, identify one or more galvanic skin response (GSR) storms in a skin conductance trace of the obtained skin conductance measurements, wherein a GSR storm is identified based on the number of peaks and/or the peak frequency in a time period having a duration in the range of 2 to 10 minutes, identify a latency of a predetermined duration without a further GSR storm after the end of an identified GSR storm, and generate, if at least one GSR storm followed by a latency has been identified, bio-feedback information providing bio-feedback related to the one or more actions followed by the user.

Abstract: The present invention relates to a system for improving sleep effectiveness of a user.

Abstract: The present invention relates to a device, system and method for determining a stress level, in particular for determining a psychogenic stress level of a user. The device comprises an interface (11) configured to obtain a skin conductance signal trace (22) of the user; a processing unit (12) configured to process the obtained skin conductance signal trace by: identifying a plurality of skin conductance peaks (50) in the skin conductance signal trace; determining, for each of said skin conductance peaks, a normalized parameter (58) of said skin conductance peak, normalized based on a skin conductance value (52, 53) of the respective skin conductance peak (50); and determining a psychogenic stress level (68) of the user based on said normalized parameters of said skin conductance peaks. The invention further relates to a corresponding wearable device (30) comprising such a device (10).

Abstract: The present invention relates to devices, systems and methods for determining a stress level of a user and for determining a histogram for use in determining a stress level of a user. Stress-correlated data, e.g. psychophysiological data, such as skin conductance data, and a histogram of past data of the user are evaluated for this purpose.

Abstract: A sensor is provided for sensing layer removal from a surface. A head has an abrasive portion for contacting the surface and a conducting portion inside the head. This device has a sensor design which provides self-generation of a sensor signal with no power supply to the device head. This simplifies the design of the sensor head, and means it can have a design which is easy to clean with no parts which are easily damaged. In one set of examples, the device is a skin treatment device.

Abstract: The present invention relates to a stress-measuring system for determining a level of stress of a user, in particular for monitoring an upcoming burnout, the system (10) comprising: an alarm clock (12) for initiating an alarm at an arbitrary preset time, wherein the system (10) comprises an interface (14) for switching off the alarm; a vital sign sensor (16) for measuring a first vital sign of the user while the user operates the interface (14); and a processing unit (18) for determining the level of stress of the user based on the sensed first vital sign.

Abstract: The present invention relates to a dry skin conductance electrode for contacting the skin of a user. In order to provide a dry skin conductance electrode for long-term measurements which does not cause problems to the user while still providing a good signal level, the electrode comprises a material made of a noble metal doped with at least one dopant selected from the group consisting of hydrogen, lithium, sodium, potassium, rubidium, caesium and beryllium. The present invention also relates to a skin conductance sensor, a wristband and an emotional event detection system.

Abstract: The present invention relates to a processor for processing skin conductance data of a living being, comprising an input unit (12) for receiving a skin conductance data signal (13) comprising a plurality of data peaks, a calculating unit (14) for computing a skin conductance peak data signal over a long-term period by deriving a feature related to said data peaks from said skin conductance data signal (13) and forming a summation of said feature per time unit and an analyzing unit (16) for analyzing an average and/or an absolute value of said skin conductance peak data signal over at least a portion of said period to get information on at least one stage of burnout and/or chronic fatigue syndrome of said living being.

Abstract: The present invention relates to a device, system and method for determining an emotional state of a user based on emotion-induced cortisol estimation.

Abstract: The present invention relates to a device (10) for detecting a circadian phase shift of a user (48). The device comprises: an interface for obtaining a skin conductance signal of the user (48) and sleep cycle information of the user (48); a processing unit (14) for determining an internal clock wake-up time based on the obtained skin conductance signal (20) and an external clock wake-up time based on the obtained sleep cycle information; and an evaluation unit (16) for evaluating a circadian phase shift of the user (48) based on the internal clock wake-up time and the external clock wake-up time. The present invention further relates to a corresponding method as well as to a wearable system (22) for monitoring a circadian phase shift of a user (48).

Abstract: A visit duration control system comprises a sensor (10) for sensing one or more physiological parameters of a person over time allowing the quantification of stress load of said person, a visit detector (20) for indicating the start of a third party's visit to said person, a processor (30) for determining said person's stress load from said one or more physiological parameters during said third party's visit and a signaling unit (40) for issuing a warning signal if said stress load exceeds a predetermined level.

Abstract: The present invention relates to assessing a psychophysiological responsiveness or non-responsiveness of a subject. A device (10) for assessing a psychophysiological responsiveness of a subject is presented, the device comprising a stimulus unit (11) for providing an electrical stimulus via a first and a second electrode (21, 22) to a skin (100) of the subject; a sensing unit (12) for acquiring an impedance signal (15) indicative of an impedance between the first and the second electrode in response to said electrical stimulus; and an analysis unit (13) adapted to identify an electrical double-layer based on the impedance signal acquired in response to the electrical stimulus and to determine a psychophysiological responsiveness of the subject based on the identified electrical double-layer.

Abstract: One or more sensors and/or sensing techniques are used individually or in combination to detect and/or measure heart rate and/or heart rate variability. The sensors may be wearable and/or portable and may operate on different principles and may include different power profiles. The sensors and/or sensing techniques may be used at the same time or at different times that may overlap partially or completely, or may be mutually exclusive. A controller may select one or more sensors and/or sensing techniques based on operating conditions and/or based on conservation of power.

Abstract: A fiber quality sensor (S) comprises a first pair of mutually adjacent electrodes arranged for contacting the fiber to generate a first voltage over the electrodes, the first voltage being indicative of the quality of the fiber, the first pair of electrodes including a first conductive electrode (1), and a first dielectric electrode (D, 2) having a first dielectric material (D) with a conductive backing (2). The fiber quality sensor (S) may further comprise a second pair of electrodes arranged for contacting the fiber to generate a second voltage over the electrodes, the second voltage being indicative of the quality of the fiber, the second pair of mutually adjacent electrodes including a second conductive electrode (1), and a second dielectric electrode (D, 2) having a second dielectric material with a conductive backing, wherein in a tribo-electric series of materials, the material of the conductive electrode is arranged between the first and second dielectric materials.

Abstract: The present invention relates to a system for improving sleep effectiveness of a user.

Abstract: A sensor is provided for sensing layer removal from a surface. A head has an abrasive portion for contacting the surface and a conducting portion inside the head. This device has a sensor design which provides self-generation of a sensor signal with no power supply to the device head. This simplifies the design of the sensor head, and means it can have a design which is easy to clean with no parts which are easily damaged. In one set of examples, the device is a skin treatment device.

Abstract: The present invention relates to a mental balance or imbalance estimation system (100) and method for estimating a level of mental balance or imbalance of a user (1). The system comprises a skin conductance sensor (20) for sensing the skin conductance of the user (1), the skin conductance over time forming a skin conductance trace (22). The system further comprises a processing unit (10) for receiving and processing the skin conductance trace (22), the processing unit configured to determine at least one stimulus response (24) in the skin conductance trace (22), to determine an estimated cortisol level trace (28) of the user (1) based on the determined at least one stimulus response (24), and to determine the estimated level of mental balance or imbalance of the user (1) based on the estimated cortisol level trace (28).

Abstract: A stress-measuring device (10) and method determines a level (15) of stress of a user (1), in particular long-term stress. The stress-measuring device (10) includes an input interface (12) for receiving a skin conductance signal (11) indicating the skin conductance of the user (1), the skin conductance signal (11) over time forming skin conductance trace data (13). The stress-measuring device (10) further includes a processing unit (14) for processing the skin conductance trace data (13). The processing unit (14) determines, over at least a portion of the skin conductance trace data (13), values of a rise time (tr) between at least two different points of the skin conductance trace data (13), a frequency distribution of the rise time (tr) values, and the level (15) of stress of the user (1) based on the determined frequency distribution.