Abstract: Techniques are disclosed for positioning a patient within a patient receiving area for a magnetic resonance examination. The techniques may include positioning the patient on a mobile patient table of a patient support facility and moving the patient table in a first horizontal direction until a region of the patient to be examined is arranged in a field of view of a patient receiving area of a magnetic resonance system. Moreover, the patient positioning techniques may include moving the patient table in a second horizontal direction and/or in a vertical direction within the patient receiving area, and acquiring medical magnetic resonance data of the region of the patient to be examined.

Abstract: According to some aspects, a magnetic resonance imaging system capable of imaging a patient is provided. The magnetic resonance imaging system comprising at least one B0 magnet to produce a magnetic field to contribute to a B0 magnetic field for the magnetic resonance imaging system and a member configured to engage with a releasable securing mechanism of a radio frequency coil apparatus, the member attached to the magnetic resonance imaging system at a location so that, when the member is engaged with the releasable securing mechanism of the radio frequency coil apparatus, the radio frequency coil apparatus is secured to the magnetic resonance imaging system substantially within an imaging region of the magnetic resonance imaging system.

Abstract: A magnetic field generator assembly is configured to be associated with a table supporting a body. The magnetic field generator comprises a plurality of magnetic field transmitters, each comprising interlacing layers of conductive material, configured to provide increased magnetic strength and minimal fluoroscopic occlusion. The interlacing layers of conductive material can be arranged in rectangular spiral formations.

Abstract: An endoscope assembly includes a shaft assembly, an endoscopic camera assembly, and an anatomy elevation assembly. The shaft assembly includes a flexible outer shaft defining a lumen, a first electrical communication line, and a first fluid communication line. The endoscopic camera assembly is in communication with the first electrical communication line. The anatomy elevation assembly includes an inflatable member coupled to the flexible outer shaft. The inflatable member includes an interior surface. The first fluid communication line is in fluid communication with the inflatable member. The inflatable member is configured to transition between a deflated configuration and an inflated configuration. The interior surface is configured to define a viewing path distal to the endoscopic camera assembly while the inflatable member is in the inflated configuration.

Abstract: A method, including receiving from a sensor affixed to a probe, signals output by the sensor in response to a calibrated magnetic field, and estimating, using calibration data, location coordinates of the sensor. Using the calibration data and the estimated location, an estimated vector including orientation coordinates is computed, and updated orientation coordinates that best fit the received signals to the estimated vector are computed for the estimated location. Based on the updated orientation, updated location coordinates that best fit the received signals to the estimated vector are computed. The steps of computing the vector, computing the orientation, and computing the location and monitoring changes in the updated location are repeated until the changes are linear. Upon the changes being linear, a final location of the sensor is computed using a linear projection from the updated location, and a position of the probe is presented based on the final location.

Abstract: A system for monitoring cannabis safety for a user comprising: an intake device communicatively coupled to a cannabis analysis subsystem via a network; wherein said intake device collects session data from the user and transmits said collected session data to the cannabis analysis subsystem; and said cannabis analysis subsystem performs analysis of said transmitted session data and communicates a reading to said user.

Abstract: The invention provides a system for measuring respiratory rate (RR) from a patient. The system includes an impedance pneumography (IP) sensor, connected to at least two electrodes, and a processing system that receives and processes signals from the electrodes to measure an IP signal. A motion sensor (e.g. an accelerometer) measures at least one motion signal (e.g. an ACC waveform) describing movement of a portion of the patient's body to which it is attached. The processing system receives the IP and motion signals, and processes them to determine, respectfully, frequency-domain IP and motion spectra. Both spectra are then collectively processed to remove motion components from the IP spectrum and determine RR. For example, during the processing, an algorithm determines motion frequency components from the frequency-domain motion spectrum, and then using a digital filter removes these, or parameters calculated therefrom, from the IP spectrum.

Abstract: A system for intra-operatively registering a pelvis comprising an acetabulum with a computer model of the pelvis in a coordinate system. The system may include: a) a surgical navigation system including a tracking device; and b) at least one computing device in communication with the surgical navigation system. The at least one computing device: i) receiving first data points from first intra-operatively collected points on an articular surface of the acetabulum, the first data points collected with the tracking device; ii) receiving a second data point from a second intra-operatively collected point on the pelvis, the second data point collected with the tracking device, the second data point corresponding in location to a second virtual data point on the computer model; and iii) determining an intra-operative center of rotation of the femur relative to the pelvis from the first data points.

Abstract: An exercise state evaluation method having the following steps is provided. The steps includes: obtaining a plurality of sensing signals by a foot information sensing module; recording a receiving time of each of the sensing signals by a processing unit and generating a plurality of pressure values, a plurality of center of gravity values, and a center of gravity trajectory information corresponding a human body according to each of the sensing signals; determining a start time, an acting time and a finish time corresponding to an exercise according to the receiving time, the pressure values, the center of gravity values and the center of gravity trajectory information; obtaining an act time value according to the start time, the acting time and the finish time; and integrating the pressure values, the center of gravity values, the center of gravity trajectory information and the act time value to an user interface.

Abstract: A walking state measurement device according to the present invention includes: at least one memory storing a set of instructions; and at least one processor configured to execute the set of instructions to: estimate a floor reaction force by use of at least either of motion data and lower limb vertical load data of a walker, and outputting the floor reaction force as floor reaction force data; and calculate a walking state of the walker by use of at least either of the motion data and the floor reaction force data, and outputting the walking state.

Abstract: A method of monitoring respiration with an acoustic measurement device, the acoustic measurement device having a sound transducer, the sound transducer configured to measure sound associated with airflow through a mammalian trachea, the method includes correlating the measured sound into a measurement of tidal volume and generating at least one from the group consisting of an alert and an alarm if the measured tidal volume falls outside of a predetermined range.

Abstract: A sensor (e.g., an optical sensor) that may be implanted within a living animal (e.g., a human) and may be used to measure an analyte (e.g., glucose or oxygen) in a medium (e.g., interstitial fluid, blood, or intraperitoneal fluid) within the animal. The sensor may include a sensor housing, an analyte indicator covering at least a portion of the sensor housing, and one or more boronic acid-drug conjugates configured to release one or more drugs in the presence of a degradative species, wherein the one or more boronic acid-drug conjugates reduce deterioration of the analyte indicator.

Abstract: An enzyme sensor is configured to measure a measurement target substance included in a secretion of a living body. The enzyme sensor includes a layered structure including (a) an absorber layer configured to absorb the secretion, (b) an enzyme layer containing an enzyme, and (c) an electrode part arranged in an order of the (a), the (b), and the (c). The absorber layer includes a polymeric material having a chemically bound crosslinked structure.

Abstract: Aspects of the present disclosure include a sensor configured to store in memory indications of sensor use information and formulas or indications of formulas for determining the useful life of a sensor from the indications of sensor use information. A monitor connected to the sensor monitors sensor use and stores indications of the use on sensor memory. The monitor and/or sensor compute the useful life of the sensor from the indications of use and the formulas. When the useful life of the sensor is reached, an indication is given to replace the sensor.

Abstract: A process for calibrating a glucose sensor under sterile conditions includes providing separate, sterile, glucose-containing calibration fluids, each having a different glucose concentration, and in turn providing these fluids to a sensing zone containing a sensing probe of a glucose sensor. Each solution is typically, in turn, propelled into the sensing zone, thus flushing out used fluid already present in the sensing zone. The process provides rapid calibration of a glucose sensor in a sterile fashion and is therefore appropriate for point-of-use calibration.

Abstract: A method for real-time, high-density physiological data collection includes automatically measuring, by a wearable device, one or more physiological parameters during each of a plurality of measurement periods, and upon conclusion of a measurement period, for each of the plurality of measurement periods, automatically transmitting by the wearable device data representative of the physiological parameters measured during that measurement period, to a server, the server configured to develop a baseline profile based on the data transmitted by the wearable device for the plurality of measurement periods. The measurement periods may extend through a plurality of consecutive days, and each of the consecutive days may include multiple measurement periods. At least some of the physiological parameters are measured by non-invasively detecting one or more analytes in blood circulating in subsurface vasculature proximate to the wearable device.

Abstract: The present invention relates to a method for fabricating a microneedle-based diagnostic skin patch coated with an aptamer, comprising treating a microneedle surface with base to modify the surface with carboxyl group and binding the carboxyl group of the surface with an aptamer with an amine group and an aptamer-coated, microneedle-based diagnostic skin patch thereby. A patch of the present invention has the advantage of attaching a great number of aptamers, which are much smaller in size than antibodies, onto a relatively great number of microneedle tip surfaces, Allowing the attachment of aptamers for various kinds of biomarkers all together thereto, the patch can also simultaneously detect various kinds of materials (multiplexing). Therefore, a microneedle tip-based skin patch can also be used as a protein chip using aptamer.

Abstract: Methods, systems, and devices for regulating blood glucose such as implantable encapsulated devices optionally with insulin and/or giucacon secreting cells in combination with glucose sensors and insulin infusion systems. For example, encapsulation devices may be connected to an insulin infusion pump for distribution of insulin. The insulin infusion pump may feature an insulin pouch fluidly connected to an insulin pump (or a syringe) and a glucose sensor separate from the encapsulation device. The system may feature an additional implantable device comprising insulin and glucagon secreting cells.

Abstract: A medical system, an analyte measurement device, a medication device and a method for transcutaneously inserting an insertable element into a body tissue are disclosed. The medical system comprises: at least one electronics unit having at least one electronics component; at least one adhesive surface for attachment of the electronics unit to a skin site of a host; at least one first subsystem configured for being at least partially inserted into the host; at least one second subsystem, wherein the second subsystem comprises at least one secondary sensor, wherein the first subsystem and the second subsystem are operably connectable to the electronics unit, wherein the second subsystem is physically attachable to the medical system.

Abstract: Systems, methods, and devices include a high-density analog multiplexer topology. Such topologies can be used, for example, in sensor device applications. An analog multiplexer circuit can include circuitry to receive N input signals; and circuitry to generate N selection signals for selecting one of said N data signals to be output from said analog multiplexer circuit. The analog multiplexer comprises one or more analog impedances.

Abstract: A test cartridge includes an adjustable lancet. The adjustable lancet is controlled by a controller. The adjustable lancet automatically detects a subject's finger, adjusts the lancet's height, pricks the finger to draw blood, moves a tube to collect the blood, moves the tube away from the finger, and empties the blood from the tube into a vial or receptacle. The adjustable lancet may include safety features to prevent the lancet to trigger when the subject's fingernail is facing the lancet, to control the amount that the lancet pierces the subject's finger, and/or to prevent the reuse of a test cartridge for multiple persons or multiple times by the same person. The adjustable lancet may include a massager wheel and/or a pressure bar to rub the subject's finger after the finger is pierced to facilitate drawing of the blood from the finger.

Abstract: A mental stress detection device (10) includes an index value calculation unit (200) and a correlation calculation unit (300). The index value calculation unit (200) calculates standard deviation (SDn) of heartbeat intervals (RRIn), a root mean square (RMn) of a difference RDn between temporally-adjacent heartbeat intervals (RRIn), and a ratio (SDn/RMn) between the standard deviation (SDn) and the root mean square (RMn). The root mean square (RMn) correlates with an activity of parasympathetic nerves and the ratio (SDn/RMn) correlates with an activity of sympathetic nerves. The correlation calculation unit (300) calculates a moment correlation coefficient (rn) which is a correlation between the root mean square (RMn) and (the ratio SDn/RMn) and a correlation associated with time.

Abstract: The present invention relates to a stress analysis method including: acquiring bio-signals from a test subject; calculating a probability of each of a plurality of stress level values by processing the bio-signals using a deep neural network algorithm; estimating a stress level value with the maximum probability of the plurality of stress level values as a stress level value of the test subject; determining usefulness of the estimated stress level value; and outputting the estimated stress level value determined to be useful through the determination of usefulness, as the final stress level.

Abstract: A driving assistance device (1) includes: a somatic nervous system activity detector (11) detecting a somatic nervous system activity, which is a physical activity, of a driver in association with steering of a vehicle; an autonomic nervous system activity detector (12) detecting an autonomic nervous system activity, which is a mental activity, of the driver in association with the steering of the vehicle; a somatic nervous system activity controller (perception amount controller (2)) which is operable to control the somatic nervous system activity; an autonomic nervous system activity controller (sound effect generator (3)) which is operable to control the autonomic nervous system activity; and a psychosomatic state controller (balance controller (14)). The psychosomatic state controller causes the somatic nervous system activity controller and the autonomic nervous system activity controller to operate such that the two activities shift to the same side with respect to increase and decrease.

Abstract: An apparatus assesses an arousal level of a driver of a vehicle. The apparatus includes a processor and a memory storing a computer program, which when executed by the processor, causes the processor to perform operations. The operations include acquiring personal data of the driver, which are detected by one or more sensors when the vehicle is traveling. The operations also include developing, by machine learning with the acquired personal data, a model for estimating an arousal level to personalize the model to the driver, and determining the arousal level of the driver based on the personalized model.

Abstract: According to one aspect of the invention, there is provided a method for calculating information on urination. The method includes the steps of acquiring a sound signal related to urination of a user, calculating a urination parameter related to an effective value (or urination parameters related to an effective value and a spectral centroid) from the acquired sound signal, and estimating a urine flow rate of the user with reference to the calculated urination parameter.

Abstract: [Object] To provide an information processing method, an information processing apparatus, and an information processing terminal that can enhance care prevention. [Solution] Provided is an information processing method including: acquiring, by an acquisition unit, measurement results of physical fitness measurement and a cognition function, life information, and a social participation score; learning, by a learning unit, correlation between a physical fitness value and a cognition function value that are based on the measurement results, and life information and a social participation score; and predicting, by a prediction unit, future physical fitness value and cognition function value of a user using the learned correlation on the basis of life information and a social participation score of the user.

Abstract: A portable neuro attack monitoring device is described. The neuro attack monitoring device combined with Coherent Hemodynamic Spectroscopy CHS algorithm offers a unique opportunity to directly resolve blood flow velocity measurements and for the first time apply NIRS+CHS technique for the detection of ischemic strokes and TIA. The device comprises a central hub configured for placement on a central part of a patient's head and a plurality of spokes connected to the central hub and configured for placement on the patient's head over a specific portion of the patient's brain. Each spoke can comprise one or more pairs of light emitting sources and at least one light detector, and the light emitting sources can be configured to inject light into the patient's head, at two or more different wavelengths, over a predetermined period of time.

Abstract: A method of generation of diagnostic index for Alzheimer's disease provides for stimulating a subject using transcranial magnetic stimulation with a conditioning stimulus and, after a first predetermined time interval, with control stimulus and to record amplitude of first motor evoked potential generated as a result of the conditioning and control stimuli. A second conditioning stimulus is administered after a second predetermined time interval greater than the first predetermined time interval, allowing recording amplitude of second motor evoked potential. A third conditioning stimulus is administered using nervous electrical stimulation after a third predetermined time interval, allowing recording amplitude of third motor evoked potential generated as a result of the third conditioning stimulus. Subsequently, the method provides for generating diagnostic index on a basis of processing of the first, second and third recorded motor evoked potential.

Abstract: According to an aspect, there is provided a computer-implemented method for determining an indication of visual attention/motoric dysfunction of a subject and/or an indication of executive cognitive dysfunction of the subject during or following a test comprising a plurality of targets that are to be completed by the subject, the method comprising the steps of receiving information on the time taken to complete each of the plurality of targets by the subject; determining a regression line for the subject based on the received information on the time taken to complete each of the plurality of targets and information on the time taken to complete each of the plurality of targets for a reference group of subjects; determining an indication of visual attention/motoric dysfunction of the subject based on a slope of the determined regression line and/or an indication of executive cognitive dysfunction of the subject based on an offset of the determined regression line; and outputting the indication of the visual at

Abstract: An allergy testing system comprises a skin test device having a grip portion for holding the device. One or more legs extend from the grip, and each leg is oriented to interact with a well containing a potential allergen. Each leg has a test head, and each test head has a plurality of elongated spike members. The elongated spike members have a sharp end configured to receive the potential allergen from a well and to puncture a patient's skin. In addition, each test head has a touch activator. The touch activator is longer than the plurality of elongated spike members, such that during an allergy test, the touch activator comes into contact with the skin prior to the elongated spike members, causing the touch activator to activate nerve tissue that blocks transmission of pain, resulting in a reduction of pain and/or discomfort during testing.

Abstract: A method of predicting bile flow through a liver is described. The method comprises: (a) dividing the axis connecting the central vein and a portal vein of a lobule into zones; (b) measuring secretion of bile by hepatocytes; (c) calculating the transport rate of said bile of (b) through each of the zones defined in (a), using differential equations; (d) providing a three-dimensional representation of the bile canaliculi in said lobule; (e) calculating a correction factor as the ratio between hydraulic radius and geometric radius of said bile canaliculi; and (f) calculating bile transport through (f-i) said three-dimensional representation of (d) using the transport rates determined in step (c) and said correction factor calculated in step (e), by solving the Navier-Stokes equations for said representation of (d); or (f-ii) a porous medium model of said liver lobule using the transport rates determined in step (c).

Abstract: An apparatus for estimating a skin condition includes a data acquirer configured to acquire an optical absorption spectrum of a skin; and a processor configured to determine content of a component in the skin from the optical absorption spectrum and determine a skin condition based on the determined content of the component in the skin.

Abstract: Nanomaterial epidermal sensors can be adhered to the skin and worn comfortably and inconspicuously for days to allow for repeated biometric sensing. The nanomaterial epidermal sensors may be comprised of a monolayer of graphene coating a flexible polymer substrate. Various nanomaterial epidermal sensors may be quickly fabricated using a cost-efficient “cut-and-paste” method on transfer paper and can be adhered directly to skin without tape or adhesive, much like a temporary-tattoo. The nanomaterial epidermal sensors may be optically transparent and may be used to measure an electrocardiogram (ECG), an electroencephalogram (EEG) or an electromyogram (EMG) with a signal-to-noise ratio that is comparable to conventional electrodes. In addition, the nanomaterial epidermal sensors may be used to measure other parameters, such as skin temperature or skin hydration.

Abstract: A method for administering tests using a regional antigen testing kit is provided. The method comprises providing the regional antigen testing kit, extracting a predetermined amount of concentrated antigen from one of a plurality of concentrated antigens, dispensing the predetermined amount of concentrated antigen into a corresponding one of a plurality of wells, as indicated by visual indicia, repeating the extracting and dispensing steps until a desired number of the plurality of wells contain concentrated antigen, providing a prick tester having a plurality of needles extending thereon, aligning the plurality of needles of the prick tester with the plurality of wells, inserting each of the plurality of needles of the prick tester into one of the plurality of wells, and applying the plurality of needles of the prick tester to the skin of a patient to elicit a potential response.

Abstract: System comprises a first sensing unit, attached to a proximal portion of a human body with a joint of the human body as a reference, for measuring an acceleration of the proximal portion or an angular velocity of the proximal portion; a second sensing unit, attached to a distal end portion of the human body, for measuring an acceleration of the distal end portion or the angular velocity of the distal end portion; a processing unit for determining an angle of the joint between the proximal portion and the distal end portion on the basis of the measured acceleration or the measured angular velocity and determining a spasticity time point at which resistance to motion of the distal end portion is received; and a display unit for displaying spasticity evaluation information for a spasticity evaluation on the basis of the angle of the joint and the spasticity time point.

Abstract: Skeletal recording devices (e.g., Microsoft Kinect®) has been gaining popularity in home-based rehabilitation solution due to its affordability and ease of use. It is used as a marker less human skeleton tracking device. However, apart from the fact that the skeleton data are contaminated with high frequency noise, the major drawback lies in the inability to retain the anthropometric properties, for example, the body segments' length, which varies with time during the tracking. Embodiments of the present disclosure provide systems that implement a particle filter based approach to track the human skeleton data in presence of high frequency noise and multi-objective genetic technique is further implemented to reduce the bone length variations. Further multiple segments in skeleton are filtered simultaneously and segments' lengths are preserved by considering their interconnection for obtained corrected set of body joint positions which ensures that the body segment length is maintained close to ground truth.

Abstract: A method of monitoring respiration with an acoustic measurement device, the acoustic measurement device having a sound transducer, the sound transducer configured to measure sound associated with airflow through a mammalian trachea, the method includes correlating the measured sound into a measurement of tidal volume and generating at least one from the group consisting of an alert and an alarm if the measured tidal volume falls outside of a predetermined range.

Abstract: A method of monitoring respiration with an acoustic measurement device, the acoustic measurement device having a sound transducer, the sound transducer configured to measure sound associated with airflow through a mammalian trachea, the method includes correlating the measured sound into a measurement of tidal volume and generating at least one from the group consisting of an alert and an alarm if the measured tidal volume falls outside of a predetermined range.

Abstract: A bandage and method of use for monitoring a selected site, e.g., an IV site, of a patient is provided. The bandage includes a first section, a second section, a bridge section, and associated electronic circuitry. The first section is secured to the skin of a patient on one side of the selected site. The second section is secured to the skin of the patient on the other side of the selected site. The bridge section is expandable. The electronic circuitry includes a detection component, e.g., a breakable electronic link or a strain gauge, mounted on the bridge section. The electronic circuitry provides an electrical signal, e.g., an alarm signal, in response to the expansion of the bridge section as determined by the detection component.

Abstract: Systems and methods for the detection of calculi in the biliary system are disclosed. The systems include an illumination source, one or more filters that filter a first set of illumination photons and a second set of illumination photons, as well as associated processors and detectors. The system is also designed to generates image data sets and generated information related to the location of the calculi.

Abstract: A semiconductor device includes an antenna mounted on a wiring substrate. A holding member includes a first plate-shaped part having a first surface and a second surface, a second plate-shaped part having a third surface and a fourth surface, and a coupling part configured to couple the first plate-shaped part and the second plate-shaped part so that the second surface and the third surface have parts facing each other with a space therebetween. The one end of the wiring substrate is fixed to the holding member so that the antenna overlaps the coupling part, as seen from above. A part continuing to the one end of the wiring substrate is folded back so as to being arranged sequentially along the first surface, the second surface, the third surface, and the fourth surface. The other end of the wiring substrate extends in an elastically deformable state from the fourth surface.

Abstract: An integrated guidewire includes a wire and an optical fiber. The wire is sized and shaped to move in an anatomical material transportation system of a patient. The optical fiber has proximal and distal ends, the proximal-end is coupled to a device external to the patient, the optical fiber is configured to transfer optical signals between the distal-end and the device, and the wire and the optical fiber are intertwined with respect to one another.

Abstract: Transducer-based systems and methods may be configured to display a graphical representation of a transducer-based device, the graphical representation including graphical elements corresponding to transducers of the transducer-based device, and also including between graphical elements respectively associated with a set of the transducers and respectively associated with a region of space between the transducers of the transducer-based device. Selection of graphical elements and/or between graphical elements can cause activation of the set of transducers associated with the selected elements. Transducer activation characteristics, such as initiation time, activation duration, activation sequence, and energy delivery characteristics, can vary based on numerous factors. Visual characteristics of graphical elements and between graphical elements can change based on an activation-status of the corresponding transducers.

Abstract: An internal device (1) is implanted in a living body (300). A control section (6) causes a communication section (5) to wirelessly transmit data corresponding to electroencephalogram signals of the living body (300) which are detected through a group of N (N is 2 or more) electrodes, to an external device (200). When the communication section (5) receives a designation signal designating a group of M electrode(s) (2a), M being smaller than N, the communication section (5) is caused to transmit data corresponding to electroencephalogram signals of the living body (300) which are detected through the group of M electrode(s) (2a), to the external device (200) in real time.

Abstract: An electrode patch comprising a lobed patch body and sensor studs having hydrogel caps disposed therein.

Abstract: An arm support for blood pressure monitoring, including an adjustable-height stand comprising a plurality of legs that support an upwardly-extending post that lies along a longitudinal post axis, wherein the legs are configured to be collapsed and deployed relative to the post, wherein when the legs are deployed they are spaced radially from the bottom end of the post and their ends are spaced from the post axis, and when the legs are collapsed their ends move closer to the post axis, an arm-supporting saddle that is carried at the top of the post, wherein the saddle has an upper arm-support surface that is configured to support an arm of a user at around the elbow region, and wherein the top of the post is adjustable in height relative to the legs, to allow the saddle to be positioned at an appropriate height such that the user's arm when supported by the saddle is in a horizontal position.

Abstract: Systems, apparatus, and methods are disclosed for processing biomedical signals. An electrophysiology (EP) system includes a differential circuit to process the biomedical signals; a differential amplifier circuit to amplify an output of the differential circuit; an analog-to-digital converter to digitize an output of the differential amplifier circuit; a communication module to interface between the analog-to-digital converter and a digital processing stage having a plurality of signal modules; and at least one processor to execute the plurality of signal modules, applying digital signal processing to the output from the analog-to-digital converter, to extract features of interest of the biomedical signals.

Abstract: Characterization of physical activity of a person by analyzing sensor measurements acquired by IMUS placed on wearable fabrics such as for knees. The system provides detection and/or prediction of physical activities. Activity classification is achieved by pattern analysis methods running on appropriate computing platforms, including, but not limited to mobile phones, mobile devices, tablets, laptops, PCs, servers, fitness tracking devices, or microcontrollers located on a preferred embodiment, and/or like. Classified activities can be used for reporting daily exercises as well as to estimate calorie expenditure, and to serve for personalized fitness monitoring and coaching purposes.

Abstract: The present disclosure relates to systems and methods for probabilistically estimating an individual's sleep stage based on spectral analyses of pulse rate and motion data. In one implementation, the method may include receiving signals from sensors worn by the individual, the signals including a photoplethysmographic (PPG) signal and an accelerometer signal; dividing the PPG signal into segments; determining a beat interval associated with each segment; resampling the set of beat intervals to generate an interval signal; and generating signal features based on the interval signal and the accelerometer signal, including a spectrogram of the interval signal. The method may further include determining a sleep stage for the individual by comparing the signal features to a sleep stage classifier included in a learning library. The sleep stage classifier may include one or more functions defining a likelihood that the individual is in the sleep stage based on the signal features.