Abstract: The invention provides an intelligent dental ornament and a method of using the same, the intelligent dental ornament comprising: a dental ornament body with a cavity, a tester located within the cavity and for detecting a physiological parameter, a battery used by the tester, and a trigger switch for triggering the tester to start test; the dental ornament body is further provided with a through-hole for at least one pipette of the tester stretching out of the dental ornament body, and a sealing cover for sealing the through-hole. When the trigger switch activates the tester, the sealing cover is opened, and the pipette of the tester stretches out of the dental ornament body through the through-hole to obtain the saliva of the subject, and the physiology parameter in the saliva is detected, and the detection result is sent to an external device in communication with the tester.

Abstract: A semiconductor sensor system, in particular a bolometer, includes a substrate, an electrode supported by the substrate, an absorber spaced apart from the substrate, a voltage source, and a current source. The electrode can include a mirror, or the system may include a mirror separate from the electrode. Radiation absorption efficiency of the absorber is based on a minimum gap distance between the absorber and mirror. The current source applies a DC current across the absorber structure to produce a signal indicative of radiation absorbed by the absorber structure. The voltage source powers the electrode to produce a modulated electrostatic field acting on the absorber to modulate the minimum gap distance. The electrostatic field includes a DC component to adjust the absorption efficiency, and an AC component that cyclically drives the absorber to negatively interfere with noise in the signal.

Abstract: Disclosed herein are systems and methods for providing reduced or negative pressure, and more particularly cyclical reduced pressure, to treat a wound. The system can include a wound dressing, a fluid collection container, a suction source, filters, and conduits. In addition, the system can include a control device and sensors. The sensors may be configured to monitor certain physiological conditions of a patient such as temperature, pressure, blood flow, blood oxygen saturation, pulse, cardiac cycle, and the like. Application of cyclical reduced pressure between two or more values below atmospheric pressure may be synchronized with the physiological conditions monitored by the sensors. Certain embodiments of the system utilize an air reservoir and one or more valves and pressure sensors or gauges to allow for rapid cycling of the level of reduced pressure within the wound dressing between two or more reduced pressure values.

Abstract: An optical measuring system comprises a control device and an optical meter. The optical meter comprises a first case, a first controller for controlling light emitters for irradiating a patient with light and light receivers for receiving light from the patient to obtain measurement data regarding a cerebral activity, and a first transmitter and receiver for transmitting the measurement data to the control device. The control device comprises a second case removably attached to the first case, a display and input device on a surface of the second case, a second transmitter and receiver for receiving the measurement data from the optical meter, and a second controller for controlling the display and input device to display the measurement data from the optical meter. The second case can be attached on a top face of the first case when the first case is placed on a table.

Abstract: A wearable device includes a main body, and a strap connected to the main body, the strap being configured to be flexible. The wearable device further includes a light source disposed in the strap, the light source being configured to emit light onto a surface of a user. The wearable device further includes a spectrum portion disposed in the main body, and an optical waveguide disposed in the strap, the optical waveguide being configured to receive the emitted light traveling into and out from the surface, and transmit the received light to the spectrum portion. The wearable device further includes a detector disposed in the main body, the detector being configured to detect the transmitted light dispersing through the spectrum portion.

Abstract: An electronic device may be coupled to an accessory such as a pair of earphones. The earphones may have ear presence sensor structures that determine whether or not the ears of a user are present in the vicinity of the earphones. The earphones may contain first and second speakers. When both the first and second speakers are located in the ears of the user, the electronic device may perform functions such as playing audio content. When one of the speakers has been removed from the ears of the user while the other of the speakers remains in the ears of the user, the electronic device can take actions such as pausing the playback of audio content, switching from stereo to monophonic playback, or stopping the playback of content. Suitable actions such as increasing audio drive strength may be taken when both speakers have been removed from the ears.

Abstract: A sensor cover according to embodiments of the disclosure is capable of being used with a non-invasive physiological sensor, such as a pulse oximetry sensor. Certain embodiments of the sensor cover reduce or eliminate false readings from the sensor when the sensor is not in use, for example, by blocking a light detecting component of a pulse oximeter sensor when the pulse oximeter sensor is active but not in use. Further, embodiments of the sensor cover can prevent damage to the sensor. Additionally, embodiments of the sensor cover prevent contamination of the sensor.

Abstract: A photoacoustic imaging method is provided that can prevent the surface of the subject from appearing in an image when a part to be observed at a position deeper than the surface of the subject is imaged. The photoacoustic imaging device includes a unit for outputting pulsed light toward the subject, and generating photoacoustic data by detecting photoacoustic waves emitted from the subject exposed to the light. The photoacoustic imaging device also includes a region detection unit that detects a near-surface region of the subject based on the photoacoustic wave detection signals, and a correcting unit that attenuates (which encompasses removing) information of the near-surface region found by the region detection unit when the part to be observed is displayed.

Abstract: In one aspect, an apparatus includes a first light source that applies first light having a first wavelength as a center wavelength to an object, a second light source that applies second light having a second wavelength as a center wavelength longer than the first wavelength to the object, an optical filter that includes first and second regions and that transmits third light produced by the first and second light each passed through or reflected by the object, first and second optical detectors that determine first and second amounts, respectively, of the third light passed through the first and second regions. The transmission ranges of spectral transmission curves of the first and second regions are located between the first wavelength and the second wavelength. The spectral transmission curve of the first region has a width at half maximum different from that of the spectral transmission curve of the second region.

Abstract: An approach for land cover classification, seasonal and yearly change detection and monitoring, and identification of changes in man-made features may use a clustering of sparse approximations (CoSA) on sparse representations in learned dictionaries. A Hebbian learning rule may be used to build multispectral or hyperspectral, multiresolution dictionaries that are adapted to regional satellite image data. Sparse image representations of pixel patches over the learned dictionaries may be used to perform unsupervised k-means clustering into land cover categories. The clustering process behaves as a classifier in detecting real variability. This approach may combine spectral and spatial textural characteristics to detect geologic, vegetative, hydrologic, and man-made features, as well as changes in these features over time.

Abstract: A biological information detection device includes first and second light sources, an image capturing system, and an arithmetic circuit. The first and second light sources project, onto a living body, at least one first dot formed by first light and at least one second dot formed by second light, respectively. The image capturing system includes first photodetector cells and second photodetector cells. The image capturing system generates and outputs a first image signal and a second image signal. The arithmetic circuit generates information concerning the living body, by using the first and second image signals. The first light includes fifth light. The second light includes sixth light. Each of the fifth light and the sixth light has a wavelength in a range from 650 nm to 950 nm. The wavelength of the sixth light is longer than that of the fifth light by 50 nm or more.

Abstract: A measurement device according to the present disclosure includes a light source for emitting measurement light which is used for measuring an in vivo component present in a living body and belongs to a predetermined wavelength band toward the living body, a detection unit in which a plurality of sensors is regularly arranged in a predetermined arrangement and which detects the measurement light emitted from the light source and passing through the living body with the plurality of sensors, and an analysis unit which analyzes an amount of the in vivo component based on an amount of light attenuated depending on an optical distance from the light source by use of a detection result detected by the detection unit.

Abstract: A near infrared spectrometer and method for wavelength and path length correction are disclosed. The spectrometer includes a number of photodiodes that transmit broadband near infrared measurement light into the tissue and at least one broadband detector which measures the light signal transmitted through the tissue. A processor estimates chromophore concentrations through a comparison of measured light attenuation and modeled light attenuation. The light attenuation model utilizes a light path length distribution derived from a Monte Carlo model and accounts for the spectral shape of the light source as a function of temperature.

Abstract: An insertion portion detection device provided with a light source unit which emits measuring beam to an outer circumferential surface of a cylindrical shape of an insertion portion to be inserted into an insertion target and to be a detection target, an optical pattern detection unit which receives reflected light from the outer circumferential surface and which sequentially acquires image data in a predetermined range of the outer circumferential surface including given optical patterns so that at least some of the optical patterns correspond to the image data, and a displacement amount calculation unit which detects a corresponding optical pattern from the image data and calculates at least one of an insertion amount of the insertion portion and an amount of rotation around the central axis of the cylindrical shape.

Abstract: A system includes a mobile computing device, a sleeve, a contact surface, a sensor module, and a telemetry module. The mobile computing device has a first processor within a housing. The sleeve has an internal surface configured to fit the housing. The contact surface is disposed on an external surface of the sleeve. The sensor module is coupled to the contact surface and is configured to generate an electrical signal corresponding to a measured physiological parameter associated with tissue at the contact surface. The telemetry module is coupled to the sensor module and is configured to communicate data corresponding to the electrical signal to the mobile computing device.

Abstract: The invention teaches a multiple reference optical coherence tomography scanner that provides a subdermal fingerprint scan, covers an area of approximately 16 mm-17 mm×10 mm in less than a second, and fits into a slim profile of less than 6 mm in thickness, thereby fitting within the slim consumer electronics such as the iPhone and similar consumer electronics. Various embodiments are taught.

Abstract: An active bipolar cardiac electrical lead includes a distal electrode (108), an intermediate connection mount (109), a ring electrode (103), and a tip housing (110). The intermediate connection mount (109) defines a proximal fitting (370) and a distal fitting (374). The ring electrode (103) has an exposed section (356) that sleeves over and engages the proximal fitting (370) of the intermediate connection mount (109) with a snap-fit connection. The intermediate connection mount (109) may connect the ring electrode (103) to the tip housing (110) and provide electrical insulation between the ring electrode (103) and the distal electrode (108).

Abstract: An embodiment includes a functional near infrared (fNIR) system comprising: first, second, and third light emitting diodes (LED) and a photo detector; and at least one storage medium having instructions stored thereon for causing the system to: (a) emit photo energy at first, second, and third wavelengths from the first, second, and third LEDs during first and second time periods, (b) determine first, second, and third optical density changes and changes in first and second chromophore concentrations based on the emitted photo energy; and (c) determine and fit first, second, and third absorption values to a first absorption spectra curve based on the determined changes in first and second chromophore concentrations. Other embodiments are described herein.

Abstract: The present invention pertains to a functional patch to be affixed to the skin, with the aim of measuring metabolic disruptions to organs, and general organ functions, of kidneys, liver, heart, pancreas and muscles (lactate), for example—more particularly it concerns the measurement of the glomerular filtration rate (GFR)—and also to a method for producing a functional patch of this kind.

Abstract: An exemplary apparatus for measuring the concentration of a test substance in an organism disclosed herein includes: a measurement system which measures first and second concentrations that are concentrations of the test substance at positions A and B, respectively, where the positions A and B are located inside of the organism but outside of the blood vessel of the organism, and the position B is located more distant from the blood vessel than the position A is; and a decision circuit which determines, based on the first and second concentrations, whether or not an equilibrium has been established yet between a concentration of the test substance inside of the blood vessel and a concentration of the test substance measured at a position inside of the organism but outside of the blood vessel of the organism.

Abstract: Methods and apparatus for measuring perfusion using transmission laser speckle imaging are provided. The apparatus comprises a coherent light source and a detector configured to measure transmitted light associated with an unfocused image at one or more locations. The coherent light source and detector are positioned in a transmission geometry. The apparatus further comprises means for securing the coherent light source and the detector to the tissue sample in a fixed transmission geometry relative to the tissue sample. The apparatus may further comprise at least one processor to receive information from the detector and process detected variations in transmitted light intensity to determine a single metric of perfusion. The method may comprise the steps transilluminating a tissue sample with coherent light, recording spatial and/or temporal variations in the transmitted light signal, determining speckle contrast value(s), and computing a metric of perfusion.

Abstract: Optical coherence tomography (herein “OCT”) based analyte monitoring systems are disclosed. In one aspect, techniques are disclosed that can identify fluid flow in vivo (e.g., blood flow), which can act as a metric for gauging the extent of blood perfusion in tissue. For instance, if OCT is to be used to estimate the level of an analyte (e.g., glucose) in tissue, a measure of the extent of blood flow can potentially indicate the presence of an analyte correlating region, which would be suitable for analyte level estimation with OCT. Another aspect is related to systems and methods for scanning multiple regions. An optical beam is moved across the surface of the tissue in two distinct manners. The first can be a coarse scan, moving the beam to provide distinct scanning positions on the skin. The second can be a fine scan where the beam is applied for more detailed analysis.

Abstract: The invention pertains to the establishment, implementation and management of a personalized information system pertinent to a user's general health, wellness and/or sport performance. Disclosed is a system capable of transcutaneous measurement of a subject including at least one light source, at least one light detector, and at least one component for generating or storing at least one value of VC02 or at least one value of V02 from the detected signal. Further, disclosed is a portable device for analyzing the composition of the respired gasses of a subject including at least one air flow conduit through which the subject can inspire or expire air through the body of the device, at least one sampling portal, an oxygen sensor, and at least one flow sensor. A dual-battery system is also provided by which an uninterrupted power supply can be provided for electronic components.

Abstract: Methods and apparatus for qualifying and quantifying excitation-dependent physiological information extracted from wearable sensors in the midst of interference from unwanted sources are provided. An organism is interrogated with at least one excitation energy, energy response signals from two or more distinct physiological regions are sensed, and these signals are processed to generate an extracted signal. The extracted signal is compared with a physiological model to qualify and/or quantify a physiological property. Additionally, important physiological information can be qualified and quantified by comparing the excitation wavelength-dependent response, measured via wearable sensors, with a physiological model.

Abstract: Methods, devices, systems, and computer program products are provided to improve sensitivity calibration of an in vivo analyte sensor and usability of an associated analyte monitoring system. In certain embodiments, methods are provided that improve the user experience of using an analyte monitoring system. Certain embodiments of the present disclosure include features that reduce the amount of calibration or re-calibration performed by the analyte monitoring system. More specifically methods of using a suspect calibration attempt to avoid having to recalibrate by adjusting the calibration or mitigating effects of sensor signal attenuation that caused the calibration attempt to be suspect are provided. Additional features are disclosed.

Abstract: A system includes a light source and a light detector. The system further includes a first optical system configured to direct a transmitted portion of light onto the detector. The first optical system is further configured to block a scattered portion of the light. The system also includes a second optical system configured to direct the transmitted and scattered portions of the light onto the detector.

Abstract: A handheld multi-parameter measuring instrument includes: a housing having a sidewall and opposed first and second surfaces, the sidewall, the first surface and the second surface cooperatively forming a cavity; a cover attached to the sidewall and rotatably connected to the housing; the blood oxygen transducer includes a light emitting unit and a light receiving unit; the light emitting unit is configured to emit red light and infrared light alternately; the light receiving unit is configured to receive the red light and the infrared light emitted from the light emitting unit; the signal processing unit is received in the cavity of the housing and is configured to control the light emitting unit to emit the red light and the infrared light alternately; the signal processing unit is further configured to calculate oxygen saturation based on a signal received by the light receiving unit; the light emitting unit is located at a side of the cover attached to the housing, and the light receiving unit is located a

Abstract: An object information acquiring apparatus comprises an irradiating unit which irradiates light on an object; a holding member which includes a light-absorbing member whose optical characteristics with respect to irradiated light are known and which holds the object; a detector which detects acoustic waves generated by tissue in the object and the light-absorbing member due to light irradiation; and a computing unit which calculates optical characteristics of the tissue in the object and the light-absorbing member by using the detected acoustic waves and which corrects the optical characteristics of the tissue in the object by using the calculated optical characteristics of the light-absorbing member and the known optical characteristics.

Abstract: A system and method to selectively illuminate (part of) an infant during phototherapy uses an array of collimators and a set of light sources to control impingement of electromagnetic radiation on the infant.

Abstract: The invention is a method for estimating a cardiac frequency via the detection of radiation backscattered or transmitted by a bodily zone. The part is illuminated, simultaneously or successively, by light radiation extending over a first spectral band and a second spectral band. A photodetector detects radiation emitted by the bodily zone under the effect of its illumination, in each of the spectral bands. A first detection function and a second detection function are formed from the radiation detected in each spectral band, respectively. The method allows the cardiac frequency to be determined via the determination of characteristic instants that are identified from the first detection function and the second detection function simultaneously.

Abstract: The present invention relates generally to systems and methods for measuring an analyte in a host. More particularly, the present invention relates to systems and methods for transcutaneous measurement of glucose in a host.

Abstract: A sensor which is adapted to attach to a head of a subject includes a first fastener that includes a first end portion and a second end portion and extends into an arc-shape, a first coupling portion that is disposed on an inner circumference side of the first fastener, a second fastener that has a first through hole and a second through hole, a second coupling portion that is disposed on a first side of the second fastener, and attachable to and detachable from the first coupling portion, a light emitter that is disposed on the first side of the second fastener, and opposed to the first through hole, and a light detector that is disposed on the first side of the second fastener, and opposed to the second through hole.

Abstract: An analyzer apparatus and method of use thereof is described to dynamically irradiate a sample with incident light where the incident light is varied in time in terms of any of: position, radial position relative to a point of the skin of a subject, solid angle, incident angle, depth of focus, energy, and/or intensity. For example, the incident light is varied in radial position as a function of time relative to one or more of a sample site, a point on skin of the subject, a detection optic, and/or a sample volume observed by a detection system. The radially varied incident light is used to enhance and/or vary light probing the epidermis, the dermis, and/or the subcutaneous fat of the subject or of a group of subjects.

Abstract: A method and apparatus for predicting based on multi-source heterogeneous data. The method comprises: acquiring, with regard to an event of a set type, at least two types of historical data that can reflect an event result; establishing a joint likelihood model of attribute data of the event of the set type and the historical data; determining an optimal estimation of the attribute data according to a maximum posterior principle; and determining, based on a probability distribution associated with the attribute data in the joint likelihood model, a parameter in the probability distribution as a prediction result of a predicted event of the set type. Some embodiments use a hierarchical model to introduce data of different sources into different data layers, unify heterogeneous data in a joint likelihood model to perform analysis, and obtain a more accurate, instant and stable prediction result through effective fusion.

Abstract: An optical isolation element is provided on an optical sensor comprising a light source, at least one photodetector, and indicator material that emits light that is detected by the photodetector when optically excited by the light source. The optical isolation element limits the optical paths by which light may be transmitted by the light source, thereby limiting exposure of the excitation light source to regions of interest. The optical isolation element also limits the optical paths by which light may be transmitted to the photodetector, thereby limiting exposure of the photodetector to light from extraneous sources.

Abstract: A method for regulating the relative position of an analyte of a sample (16) in relation to a light beam (F) includes the illumination of the analyte of the sample (16) with the light beam (F), capturing by an imaging device (38) a transmission image of the beams scattered by the analyte of the sample (16) in order to establish a diffraction pattern, and modifying the relative position of the analyte of the sample (16) in relation to the light beam (F) according to at least one property of the diffraction pattern.

Abstract: An apparatus and a program are provided which are capable of simultaneously measuring, evaluating, imaging and displaying the biological function of sites with different biological functions, such as the brain and the muscle, different parts of the brain or different muscle locations, using near-infrared spectroscopy. In an apparatus for evaluating biological function K, physiological indices, including parameters derived from changes in deoxyhemoglobin concentration and changes in oxyhemoglobin concentration, are calculated by a calculating part of a controller. To measure simultaneously, evaluate, image and display the biological functions of sites with different biological function, such as the brain and the muscle, different parts of the brain or different muscle locations, these physiological indices from different sites of the living body are adjusted in such a way that they can be compared with each other by the calculating part and displayed by a display part.

Abstract: An apparatus for non-invasive glucose monitoring includes a light source for emitting at least one ray of light; a first beam splitter, a set of photo detectors for measuring optical rotatory distribution (ORD) information and absorption energy information; a reference component receiving the light from the first beam splitter, and the light reflected by the reference component being transmitted to the set of photo detectors by the first beam splitter, wherein the light emitted from the light source is transmitted to the set of photo detectors by the first beam splitter and the eyeball to form a first optical path, the light emitted from the light source is transmitted to the set of photo detectors by the first beam splitter and the reference component to form a second optical path; and a processing unit receiving and processing the ORD information and the absorption energy information to obtain a glucose information.

Abstract: Various embodiments of methods and systems for continuous transdermal monitoring (“CTM”) are disclosed. One exemplary method for CTM begins by monitoring an output signal from an accelerometer. The accelerometer output signal may indicate acceleration and deceleration of a body part of a user, such as the user's wrist. Based on the accelerometer output signal, it may be determined that the body part of the user has decelerated to a minimum, e.g., substantially zero. With a determination that the body part has decelerated to the minimum, e.g., substantially zero, or has not accelerated beyond the minimum, e.g., substantially zero, the method may determine a reading from a pulse oximeter associated with the accelerometer. Advantageously, the pulse oximetry reading, or a reading from other sensors associated with the accelerometer, may be optimally accurate as motion artifact may be minimized. The pulse oximetry reading may be recorded for later query and/or rendered for the benefit of the user.

Abstract: A wrist-worn apparatus control with fingerprint data includes a physical activity-related measurement sensor interface, a fingerprint sensor, one or more processors, and one or more memories including computer program code. The one or more memories and the computer program code are configured to, with the one or more processors, cause the apparatus at least to receive fingerprint data from a user with the fingerprint sensor, identify the fingerprint data as matching with one finger of the user on the basis of a comparison between the fingerprint data and reference data of a plurality of fingers of the user stored in the memory, and select a function of a physical activity-related measurement on the basis of the identified finger.

Abstract: A system and optimization algorithm for determining the preferred operational wavelengths of a device configured for measurement of molecular analytes in a sample. Operational wavelengths are determined by solving a system of equations linking empirically defined functions representative of these analytes, spectrally dependent coefficients corresponding to these analytes, path lengths traversed by waves probing the analytes at wavelengths corresponding to the absorption level described by the functions representative of these analytes, and, optionally, a cost-function taking into account at least one of spectral separation between the operational wavelengths, manufacturability of wave source(s) producing wave(s) at operational wavelength(s), and the noise factor associated with the operation of such wave source(s).

Abstract: Systems and methods that enable physiological monitoring with a mobile communication device and that allow detection of motion artifacts so that the results reported are of acceptable quality are disclosed.

Abstract: An automatic analyzer with high processing capacity is capable of immediately measuring an emergency specimen rack. The automatic analyzer includes a conveying line for conveying a specimen rack, and an analysis unit which has a dispensing line in which a plurality of specimen racks are arranged for waiting until sample dispensing, and a sampling area for dispensing the sample to the analysis unit. A rack save area is provided in the dispensing line and at a position adjacent to the upstream side of the sampling area. When a specimen rack exists in the sampling area at the time of measuring an emergency specimen rack, a controller moves the specimen rack to the save area and positions the emergency specimen rack to be moved from a downstream side of the sampling area to the sampling area.

Abstract: The present invention provides a method of detecting nerves, including: step 1 of irradiating a sample with excitation light; step 2 of detecting Raman scattering light from the sample; step 3 of calculating an intensity ratio of a wave number within a specific range of the Raman scattering light detected in the step 2 or extracting a feature of the intensity ratio and subjecting the feature to multivariate analysis and/or statistical analysis; and step 4 of specifically displaying nerves containing unmyelinated nerves, using as an index the intensity ratio or a result from the multivariate analysis and/or the statistical analysis.

Abstract: Embodiments of the present invention relates to analyte sensors. In particular, the preferred embodiments of the present invention relate to non-consuming intravascular glucose sensors based on fluorescence chemistry.

Abstract: A pulse oximetry sensor includes reusable and disposable elements. To assemble the sensor, members of the reusable element are mated with assembly mechanisms of the disposable element. The assembled sensor provides independent movement between the reusable and disposable elements.

Abstract: Methods and apparatus for providing rule-based access to data stored on wearable devices are provided. A wearable computing device can store data that includes data about a wearer of the wearable computing device. The wearable computing device can receive a request for a portion of the stored data. The wearable computing device can determine a designated role associated with the request for the portion of the stored data. The wearable computing device can determine one or more rules regarding access to the portion of the stored data based on the designated role. The wearable computing device can determine a response to the request for the portion of the stored data by at least: determining whether the request is validated by at least applying the one or more rules to the request, and after determining that the request is validated, providing the requested portion of the stored data.

Abstract: Methods of making an implantable pulse generator are disclosed herein. The implantable pulse generator can include a body defining an internal volume and a plurality of wires extending from out of the internal volume of the body. Some of these wires can be connected, either directly or indirectly to a lead via a welded joint. The welded joint can be created by first resistance welding and then laser welding some of the wires to a connector.

Abstract: A system and method are presented for use in monitoring one or more conditions of a subject's body. The system includes a control unit which includes an input port for receiving image data, a memory utility, and a processor utility. The image data is indicative of data measured by a pixel detector array and is in the form of a sequence of speckle patterns generated by a portion of the subject's body in response to illumination thereof by coherent light according to a certain sampling time pattern. The memory utility stores one or more predetermined models, the model comprising data indicative of a relation between one or more measurable parameters and one or more conditions of the subject's body. The processor utility is configured and operable for processing the image data to determine one or more corresponding body conditions; and generating output data indicative of the corresponding body conditions.

Abstract: Provided according to embodiments of the invention are photoplethysmography probes designed for use on a user's nasal alar. Methods of using such photoplethysmography probes are also provided herein.