61 results about "Nystagmus" patented technology

Structure and methodology involving mountable and head-wearable frame structure which is positionally stabilized, during use, relative a human subject's head, and which carries a selection of positionally anchored data sensors, and stimuli deliverers, that are relevant to the diagnosis and treatment of vestibular disorders. Special configurations are provided for two types of stimulators, one for sound application and air-pressure modification, and the other for the introduction of fluids to the ear. Stabilization enables tight and accurate correlation of data which is quickly analyzable by a connected, properly algorithmed computer, which can also be used for feedback control in a designed “expert” system. The invention enables, among other things, practical and significant differentiation between physiological and pathological nystagmus.

A system or method for measuring human ocular performance can be implemented using an eye sensor, a head orientation sensor, and an electronic circuit. The device is configured for measuring vestibulo-ocular reflex, pupillometry, saccades, visual pursuit tracking, vergence, eyelid closure, dynamic visual acuity, retinal image stability, foveal fixation stability, focused position of the eyes or visual fixation of the eyes at any given moment and nystagmus. The eye sensor comprises a video camera that senses vertical movement and horizontal movement of at least one eye. The head orientation sensor senses pitch and yaw in the range of frequencies between 0.01 Hertz and 15 Hertz. The system is implemented as part of an impact reduction helmet that comprises an inner frame having interior pads configured to rest against a person's head and one or more shock absorption elements attached between the inner frame and the spherical shell that couple the spherical shell to the inner frame. The spherical shell has a circular geometry, that when viewed horizontally at its horizontal midplane, includes a center point that is the rotational center of the spherical shell. The one or more shock absorption elements are sized to provide greater spacing between the inner frame and the spherical shell at the sides and rear of the spherical shell than at the front of the spherical shell. The one or more shock absorption elements are sized to configure the alignment of the rotational center of the spherical shell with the proximate rotational center of the wearer's head.

Disclosed herein is a system to stimulate at least a part of the vestibular system of a patient to induce a sensation of anorexia to promote weight loss. The system can include a thermal element, a power source, a conduit, and a control unit configured to regulate the temperature of the thermal element, the duration in which the thermal element is applied, the duration in between thermal stimuli, and / or the number of stimulus cycles to promote a sensation of anorexia in a patient while avoiding or minimizing undesirable side effects such as nausea, vomiting, nystagmus, or vertigo. Methods of using the system are also disclosed.

A device, a system, and / or a method are provided for monitoring the eye behavior of drivers of oncoming cars. A camera mounted to a car mirror may monitor the eyes of oncoming drivers. An eye recognition analyzer may recognize nystagmus symptoms exhibited by the oncoming drivers. A machine may recognize the license plate information of the oncoming cars. The license plate numbers, as well as other identifying features of the oncoming cars, may be displayed on a head-up display of a car. A driver of the car may be otherwise notified by an alarm and / or warning about the possibility of a dangerous, oncoming car. An emitter located on the car may emit signals to other nearby networked cars in order to warn their drivers about the dangerous oncoming car. Information regarding the dangerous oncoming car may be displayed on the head-up displays of the other nearby networked cars.

An apparatus for detecting abnormalities in spatial perception that consists of a first transparent screen in a close-vision field and a second screen seen through the first one and located in a far-vision field of a person being tested. The apparatus is provided with devices for forming images selectively on the first or second screen and with a device for tracking trajectories of the eye pupils while following the images. The method is based on detecting specific irregularities in trajectories of the eye pupils, such as nystagmuses, cut-offs, sudden drops of the gaze, etc., when a person follows the smooth trajectory of a moving image on a selected screen, or when the size and position of the eye pupil change with certain irregularity in response to instantaneous switching of images between the screens without changing the position of the person's head.

A method of measuring retinal or visual pathway function comprises stimulating optokinetic nystagmus by presenting a visual stimulus to a patient; modifying a first parameter of the visual stimulus; modifying a second parameter of the visual stimulus; and using the modified visual stimulus to determine a threshold stimulus for optokinetic nystagmus; wherein the first and second parameters are selected from a group of parameters comprising a pattern for the visual stimulus, a width of the visual stimulus, a distance between the visual stimulus and the patient, a spatial frequency of the visual stimulus, a rate of change or temporal frequency of the test face of the visual stimulus, and a contrast between elements of the visual stimulus.

An apparatus for detecting abnormalities in spatial perception that consists of a first transparent screen in a close-vision field and a second screen seen through the first one and located in a far-vision field of a person being tested. The apparatus is provided with devices for forming images selectively on the first or second screen and with a device for tracking trajectories of the eye pupils while following the images. The method is based on detecting specific irregularities in trajectories of the eye pupils, such as nystagmuses, cut-offs, sudden drops of the gaze, etc., when a person follows the smooth trajectory of a moving image on a selected screen, or when the size and position of the eye pupil change with certain irregularity in response to instantaneous switching of images between the screens without changing the position of the person's head.

A mask (10) has a lightweight, robust, plastics or metal frame or body (12) on which other components are supported. The body (12) includes straps or arms (14) to allow the mask to be temporarily attached to the user's head and is designed to provide a light omitting cover for the user's eyes. A suitable light source such as an infrared light source (20) is provided to illuminate the user's eyes (22). A pair of lenses (30) is provided to focus images of the user's eyes onto a pair of image sensors (40). There is also described a method of diagnosing various disorders by investigating changes in the eye using the mask (10). The portable device (10) can be used for the investigation of nystagmus or more generally in oculography, and for the investigation of other changes in the eye.

Structure and methodology involving mountable and head-wearable frame structure which is positionally stabilized, during use, relative a human subject's head, and which carries a selection of positionally anchored data sensors, and stimuli deliverers, that are relevant to the diagnosis and treatment of vestibular disorders. Special configurations are provided for two types of stimulators, one for sound application and air-pressure modification, and the other for the introduction of fluids to the ear. Stabilization enables tight and accurate correlation of data which is quickly analyzable by a connected, properly algorithmed computer, which can also be used for feedback control in a designed “expert” system. The invention enables, among other things, practical and significant differentiation between physiological and pathological nystagmus.

The visual function is determined with the help of test images, comprising inducing photostress induced by illuminating the eye with an intense light, then measuring the time needed for the recovery of the visual function before the illumination. The test images are periodically moving test images, and the visual function is determined on the basis of detecting the phenomenon of optokinetic nystagmus. According to another process the visual function is determined by measuring critical fusion frequency (CFF) before and after the photostress.

The invention relates to a statistical analysis method of eye movement displacement vector based on energy spectrum analysis of displacement statistical chart, which comprises following steps: locating eyeballs in a video image; making a displacement statistical chart; carrying out Gabor transformation of the displacement statistical chart; analyzing components; constructing characteristic vectors; obtaining weak classifiers by SVM training and grouping; constructing strong classifiers; and constructing analysis model and reporting the result. Based on videonystagmography, the method provided by the invention can execute energy spectrum analysis for the eye movement displacement statistical chart to extract the dominant and recessive characteristics to obtain the mediate analysis result, which is displayed on a computer screen in an image interface manner, thus providing helpful reference information related to the video image characteristics of nystagmus for medical science.

In an apparatus for diagnosing a brain function of a subject 20 by giving a load to a functional site of a living organism of the subject 20, receiving reactions emitted from the living organism of the subject 20 as an electric signal 40, 50, 60 or 70 and analyzing the electric signal 40, 50, 60 or 70, the electric signals 40, 50, 60 an 70 are a voice signal 40, an nystagmus signal 50, a pulse wave signal 60 and a gravity center swinging signal 70. The apparatus selects at least two from among them, calculates chaos theoretical indexes such as Lyapunov exponents according to a chaos theoretical technique, detects changes in the chaos theoretical indexes with passage of time, and collectively evaluates and diagnoses the brain function.

Various embodiments of a device for performing a gaze field sobriety test are disclosed. The device includes a housing. A light source is affixed in or on the housing. The light source generates light during at least a portion of the gaze field sobriety test. A speaker positioned in or on the housing generates sounds during at least a portion of the gaze field sobriety test. A power source is coupled to the speaker and the light source. An input is positioned on the housing. The input is selectable by a test administrator to initiate an audible sound through the speaker at a predetermined time interval during at least a portion of the gaze field sobriety test. The audible sound provides an indication to the test administrator during the gaze field sobriety test to assist in proper performance of the gaze field sobriety test.

The invention discloses a traditional Chinese preparation for treating Menieres disease, and the traditional Chinese preparation comprises the following components in parts by weight: 1-10 parts of hairyvein agrimony, 1-5 parts of cassia seed, 0-8 parts of the root of red-rooted salvia, 0-6 parts of Tuckahoe, 0-4 parts of rhizoma gastrodiae and 0-3 parts of bighead atractylodes rhizome. In the traditional Chinese preparation provided by the invention, the traditional Chinese medicines such as the hairyvein agrimony, the cassia seed and the other traditional Chinese medicines are compatible and are decocted into a decoction for oral administration. Thus, all the clinical symptoms such as dizziness, nausea, vomit, nystagmus and the like of patients disappear, and no patient recurs through a follow-up visit for three years. The traditional Chinese preparation for treating the Menieres disease disclosed by the invention has the advantages of simple preparation method, low expense, good treatment effects, no toxic or side effect, no recurrence and no rebound.

The invention discloses benign paroxysmal positional vertigo intelligent diagnosis and treatment equipment. The equipment comprises a correction host, a nystagmus recorder and an operation bench, wherein the correction host is used for carrying out a nystagmus induction test and reset treatment on a patient; the nystagmus recorder is used for collecting nystagmus video information of the patient during a nystagmus induction test process; the operation bench includes an upper computer system and a main control module; and the upper computer system includes a nystagmus video module, a diagnosistest module, a reset treatment module, a real-time navigation module and a system parameter configuration module. In the invention, automatic and intelligent diagnosis and treatment of vertigo are realized; an accurate diagnosis and treatment scheme of semicircular canal real-time navigation can be provided for a special patient, and breakthrough and innovation of a technology are realized; and domestic related industry development can be effectively promoted and a growing healthy development demand is satisfied.

A system or method for measuring human ocular performance can be implemented using an eye sensor, a head orientation sensor, and an electronic circuit. The device is configured for measuring vestibulo-ocular reflex, pupillometry, saccades, visual pursuit tracking, vergence, eyelid closure, dynamic visual acuity, retinal image stability, foveal fixation stability, focused position of the eyes or visual fixation of the eyes at any given moment and nystagmus. The eye sensor comprises a video camera that senses vertical movement and horizontal movement of at least one eye. The head orientation sensor senses pitch and yaw in the range of frequencies between 0.01 Hertz and 15 Hertz. The system is implemented as part of a faceguard.

The invention discloses a nystagmus signal feature extraction and tracking algorithm for diagnosing diseases of a vestibular system, in particular to a video image processing method and a target locating and tracking method, which are accurate in identification and meet clinical requirements. The invention comprises the following steps: 1, reconstructing the opening and closing operation to removethe light spot; 2, the change of the top cap and the bottom cap enhancing the pupil area; 3, positioning the center of pupil; 4, pupil cent tracking; 5, closing the eyes to detect and track the waveform to remove interference. The reconstruction opening operation and the image enhancement method proposed by the invention can effectively preprocess the nystagmus image and accurately extract the pupil of the nystagmus image; the proposed method not only has high recognition accuracy, but also improves the speed of image computation and meets the clinical real-time requirements. In addition, theinvention performs eye-closing detection on nystagmus images and removes nystagmus signal interference, thereby eliminating large deviation and providing reliable basis for subsequent nystagmus signal analysis and research.

The invention discloses a vestibule balance function examining, acclimatizing and correcting device. The vestibule balance function examining, acclimatizing and correcting device comprises an operation control system and a mechanical and power servo system, an autonomous control system, a three-dimensional visual real-time simulation system and a medical physiological signal monitoring and recording system mutually and electrically connected with the operation control system. The vestibule balance function examining, acclimatizing and correcting device establishes a three-dimensional rotating system which can be quantitatively controlled, meanwhile can perform three-dimensional compound motion to stimulate three pairs of vestibular semicircular canals and further can detect nystagmus electrographs and other physiological signals so as to achieve the effects of conducting comprehensive vestibule balance evaluation on an examined, acclimatized and corrected object, improving the vestibule balance and orientation functions of the object and correcting motion sickness.

The invention relates to a DNA library capable of diagnosing nystagmus infective genes through a targeted high-flux sequencing technique and an application of the DNA library. The library comprises 674 nystagmus infective genes. According to the DNA library disclosed by the invention, 674 nystagmus infective genes are preferably selected, a probe pond is designed, a target area library in accordance with 674 nystagmus infective genes is established, a high-flux sequencing technique is used by the library for sequencing, infective mutation is sought, and genetics and molecular biology basises are provided for clinical diagnosis. The DNA library disclosed by the invention has the characteristics of being accurate, quick, flexible and low in cost. The 674 gene related in the DNA library disclosed by the invention comprise infective genes of heredity diseases which nearly use nystagmus as clinical manifestation, including X-linked congenital nystagmus, oculocutaneous albinism, ataxia diseases, congenital amaurosis and cataract, and have important significance and clinical value on diagnosis, identification and diagnosis as well as pinpoint treatment of the nystagmus.

A device, a system, and / or a method are provided for monitoring the eye behavior of drivers of oncoming cars. A camera mounted to a car mirror may monitor the eyes of oncoming drivers. An eye recognition analyzer may recognize nystagmus symptoms exhibited by the oncoming drivers. A machine may recognize the license plate information of the oncoming cars. The license plate numbers, as well as other identifying features of the oncoming cars, may be displayed on a head-up display of a car. A driver of the car may be otherwise notified by an alarm and / or warning about the possibility of a dangerous, oncoming car. An emitter located on the car may emit signals to other nearby networked cars in order to warn their drivers about the dangerous oncoming car. Information regarding the dangerous oncoming car may be displayed on the head-up displays of the other nearby networked cars.

The invention discloses a high-speed video nystagmus instrument system. The system comprises a nystagmus recording instrument, a PC terminal and a wireless transmission module used for establishing the communication connection between the nystagmus recording instrument and the PC terminal; the nystagmus recording instrument comprises an eyeshade, a video collecting assembly arranged in the eyeshade and a core control module arranged in the eyeshade; a video decoding module, a pupil tracking module and a diagnostic module are embedded in the PC terminal. According to the nystagmus instrument system, nystagmus video information is obtained through the nystagmus recording instrument, the nystagmus video information is transmitted to the PC terminal through the 5G frequency range wireless transmission module to perform operations of video decoding, analyzing and the like, nystagmus information recording and recognizing functions in BPPV diagnosis are completed, and a foundation is laid forthe diagnosis of diseases. By the using of a 5GHz WiFi module, high-speed transmission of videos is ensured, the anti-interference capability of the nystagmus recording instrument is improved, the obtaining of high-definition and high-frame-rate nystagmus videos is achieved, and the accuracy of the system is improved.

The invention relates to a drug composition for curing hereditary ataxia. The drug composition is made of rehmannia glutinosa, rhizoma anemarrhenae, atractylis ovata, achyranthes, Clematis chinensis, root-bark of tree peony, radix codonopsitis, eucommia bark, common dodder, sealwort, colla corii asini, oyster, salvia miltiorrhiza, milk veteh, caulis spatholobi and / or a medically acceptable carrier. The invention also relates to a method for preparing the drug composition. The drug composition has the functions for tonifying the kidney and spleen, replenishing essence and brain, nourishing liver and calming wind, strengthening tendons and bones, etc., and is used for curing the symptoms of gait instability, swaying walking, nystagmus and asophia, etc. caused by the hereditary ataxia.

The invention discloses a system and a method for obtaining parameters of animal nystagmus based on VOR (vestibulo-ocular reflex). The system comprises an animal fixation device, an external stimulation module, an image processing module, a data processing module and two groups of nystagmus image acquisition modules, the two groups of nystagmus image acquisition modules correspond to a left and aright nystagmus images of animals respectively, each group of the nystagmus image acquisition modules comprises an optical eyepiece and an image acquisition device, the animal fixation device is usedto fasten animals to be tested, the external stimulation module is used to apply mechanical stimulus for the animals to be tested, the two image acquisition devices respectively collect the left and right nystagmus images corresponding to the reflex of the optical eyepiece and transfer to the image processing module, the image processing module obtains coordinate data of pupil center, according tothe received nystagmus images, and transfers to the data processing module, and the data processing module obtains nystagmus parameters of the animal to be tested according to the coordinate data ofpupil center. The nystagmus parameters can be obtained accurately through the system and the method, and the system and the method can provide quantitative evaluation of vestibular function with significant evidence.

The invention relates to a BPPV nystagmus signal labeling method, and the method comprises the following steps: enabling an expert to label a part of selected high-quality video samples according to clinical diagnosis experience; according to labeled data of an expert, expanding a sample size to obtain a sufficient sample number by adopting data processing schemes such as data enhancement and positive sample expansion, and training a basic deep learning model as a Teacher Model; taking the unlabeled data as a test set, predicting the unlabeled data by using the Teaser Model, and giving a corresponding pseudo-label effect; selecting and abandoning the samples with negative false label display and low-confidence positive samples and independent positive samples; for continuous positive samples, annotating the samples with high confidence as positive samples, wherein the samples are used as new training samples. According to the method, the deep learning model is trained by using the limited annotation data set, and the new patient sample is automatically annotated, so that the annotation cost is reduced.