46 results about "Olfactory stimulation" patented technology

The invention relates to the technical field of emotion recognition, in particular to an odor-induced EEG emotion recognition method and system based on a space-time stratified attention mechanism, and the method comprises the steps: presenting odor stimulation to a testee through an olfactory stimulation device, and synchronously collecting an EEG signal and a free association voice text of the testee; performing semantic analysis on the free association voice text, and extracting keywords and corresponding emotion dimension tags; carrying out space-time hierarchical feature extraction on the EEG signal; constructing a space-time hierarchical attention mechanism model; and on the basis of the weighted spatial-temporal features and semantic tags, node connection weights of the individualized knowledge graph are updated through a graph neural network, and an emotion recognition result is generated. According to the method, spatial attention and time attention are combined, key spatio-temporal characteristics are dynamically focused, the limitation of a fixed weight of a traditional method is avoided, and the pertinence and integrity of neural signal representation are remarkably improved.

According to the self-verification type child attention monitoring method, a rich plot database is constructed according to plot demands of children and public demands, then a child attention value is calculated according to interaction data of the children in an interaction plot, and then an attention evaluation value can be calculated in combination with a difficulty value and an attention threshold value; the attention evaluation value is used as a main basis for evaluating the attention of the child, and in the evaluation process, a self-verification mechanism is introduced, and a next section of interaction plot with different difficulty values is dynamically selected according to the attention evaluation value of the first section of interaction plot; the positive and negative correlation between the change of the attention evaluation value and the change of the difficulty value of the previous and later sections of interaction plots is calculated, different measures are taken based on the positive and negative correlation, if the positive correlation is adopted, a section of interaction plot containing olfactory stimulation can be introduced again, and the positive and negative correlation is evaluated again for self-verification; and the reliability and accuracy of the attention monitoring result are ensured.

The invention discloses a system and method for performing cranial nerve stimulation based on olfaction, hearing and synchronous magnetomotive stimulation, and the system comprises a magnetic therapy bearing main body which is a magnetic therapy helmet, serves as a basic bearing structure of the system, and is used for installing all functional assemblies, providing magnetic therapy physical auxiliary stimulation, and achieving the cooperation of magnetic therapy and multi-mode stimulation; the olfactory stimulation subsystem is used for providing olfactory stimulation with precise regulation and control; the auditory stimulation subsystem is used for providing personalized audio stimulation; the magnetomotive stimulation subsystem is used for providing magnetomotive stimulation; the nerve stimulation cooperation subsystem is used for planning multi-mode stimulation as a whole and achieving regulation and control. Through the synergistic effect of olfactory stimulation, auditory stimulation and magnetomotive stimulation, three major neural pathways of olfactory, auditory and somatosensory can be activated at the same time, multi-dimensional nerve resonance is formed, the brain wave synchronization degree is remarkably improved, and the adjuvant therapy effect on Alzheimer's disease, cognitive impairment and other diseases is superior to that of single-mode stimulation.

The invention relates to the technical field of pet foods, in particular to a pet food for improving the palatability of the pet food and a preparation method of the pet food. The invention provides a pet food, which comprises the following raw materials: enzymolysis yolk liquid, enzymolysis yolk powder and goat milk powder, and the raw materials are applied to the pet food, so that feeding stimulation, taste increase and palatability increase can be formed when pets (such as pet dogs) eat the pet food, and further, strong olfactory stimulation is matched with the taste to increase feeding; stable food calling is guaranteed; and the palatability is improved.

The invention discloses a wearable digital olfaction experience device, system and method. The core purpose of the wearable digital olfaction experience device, system and method is to determine that olfaction is a brand-new and high-fidelity digital information medium. The device is positioned as a purely "olfactory display" that includes a nose wearing structure, an olfactory stimulus generating unit, a wireless communication module, and a processing circuit. The core of the olfactory stimulus control device is that the processing circuit adopts pure open-loop control logic and is configured to receive timestamps and parameters defined in an external digital control instruction sequence and drive the olfactory stimulus generation unit to perform high-fidelity micro-dose release strictly according to the timestamps and parameters. An accurate and synchronous olfactory dimension is provided for immersive experience such as VR / AR, a brand-new and private information expression mode is opened up, and a complete technical link from content creation to sharing is constructed around the device.

The invention discloses an auxiliary artificial olfaction compensation method and device based on a brain-computer interface. The method comprises the steps that a scalp electroencephalogram cap is combined with a nasal cavity near infrared spectrum sensor to synchronously collect non-invasive signals; performing time-frequency analysis on the non-intrusive signal, and converting an alpha wave, a gamma wave and an individualized characteristic frequency band into a Poincare map and nonlinear kinetic parameters; according to the individualized olfactory brain network connection atlas, transcranial magnetic stimulation and transcranial direct current stimulation, setting a targeted stimulation position and intensity for a specific brain region related to olfactory perception; presenting a preset odor stimulus to the subject, evaluating the attention, emotion and olfactory perception state of the subject, and adaptively adjusting the intensity, frequency and odor concentration of the nerve stimulus and artificial olfactory stimulus to optimize the compensation effect. The olfactory functions of different regions of the brain of the olfactory disorder patient are collected through the brain-computer interface, and the regions corresponding to the brain are simulated and stimulated through gases with different smells to assist in stimulation and recovery of olfaction.

This invention discloses an olfactory electrostimulation model for automatically generating current stimulation signals for an artificial nose, relating to the technical field of olfactory stimulation signal generation using biomimetic neural networks. The implementation steps include: First, constructing a biomimetic neural network framework. Based on the neuronal anatomical structure of the olfactory epithelium and olfactory bulb system, extracting the main neuron types, and organizing them according to their connection methods in biological systems; Second, using the Hindmarsh-Rose neuron model to model various neurons in the constructed network and simulate their dynamic firing behavior; Subsequently, setting the connection weights between neurons and the interlayer transmission current to realize the computational model of the entire biomimetic neural network; Finally, in the odor encoding and stimulation signal generation stage, the odor detection curve of the electronic nose is used as an external stimulus input to the biomimetic neural network. The network calculates and generates a series of peak signals, which are output as current stimulation signals to the olfactory bulb for stimulation, thereby realizing the olfactory induction function of the artificial nose.

The system according to this embodiment aims to reproduce the sense of smell in a digital space and improve the user experience. [Solution] The system according to the embodiment comprises a generation unit, a supply unit, and a collection unit. The generation unit generates olfactory sensations. The supply unit provides the olfactory sensations generated by the generation unit to the user. The collection unit collects the user's response to the olfactory sensations provided by the supply unit.

A smell simulation system includes an olfactory stimulation system comprising an olfactory stimulation delivery device containing an olfactory stimulator. The olfactory stimulation delivery device is adapted to position the olfactory stimulator on or in proximity to the user so that the olfactory stimulator can provide an electrical stimulus to the user that generates an olfactory effect. A connection system is adapted to connect the olfactory stimulation system to a virtual environment, wherein the olfactory stimulation system provides an olfactory stimulation to the user in response to an interaction with the virtual environment.

The invention relates to the technical field of virtual reality, in particular to a multi-mode environmental animal test system and an olfactory stimulation component thereof, the olfactory stimulation component comprises a first gas channel, the first gas channel comprises an input section, a middle section and an output section which are connected in sequence; the first multi-way valve is arranged between the outlet of the input section and the inlet of the middle section; the second multi-way valve is arranged between the outlet of the middle section and the inlet of the output section; wherein the middle section comprises an air branch pipe and at least one sniffing branch pipe which are arranged in parallel, an inlet of the air branch pipe and an inlet of each sniffing branch pipe are connected to the first multi-way valve, and an outlet of the air branch pipe and an outlet of each sniffing branch pipe are connected to the second multi-way valve; the air branch pipe passes through the first mineral oil storage bottle, and each sniffing branch pipe passes through the sniffing bottle.

Disclosed herein are methods, kits, and devices for improving cognitive function and memory through olfactory stimulation. In some embodiments, olfactory stimulation is performed by releasing one or more scents according to an olfactory stimulation regimen or schedule. The scents can include scents that are familiar to a patient as derived from a patient profile. The methods, kits and devices described herein can provide a large impact on cognition with minimal effort and cost. They can be used widely and effectively among older adults, children, and other populations in need of improved cognitive performance.

The invention provides a sniffing device mounted on a dental diagnosis and treatment chair and a use method, the sniffing device comprises a dental chair, a tool shelf, a spittoon and a mouth lamp, the dental chair is mounted on the ground, a side box for mounting parts is arranged on one side of the dental chair, the tool shelf and the mouth lamp are movably connected to the side box, the spittoon is rotatably connected to the side box, a gas supply mechanism is embedded in the bottom of the side box, and the gas supply mechanism is connected to the bottom of the side box. The air supply mechanism is communicated with a nose mask covering the nose, and the essential oil bottle is connected to the air supply mechanism. According to the sniffing device mounted on the dental diagnosis and treatment chair and the use method, the air supply mechanism is embedded into the bottom of the side box and is directly communicated with the nasal mask, so that an essential oil conveying path is short and closed, airflow interference in a consulting room is avoided, and continuous nasal cavity sniffing stimulation is realized; a motor-piston driven quantitative conveying mode is adopted, so that the flow of the essential oil is stable, and concentration fluctuation is avoided; an elastic movable ring and a screw-thread insert self-locking structure of the clamping mechanism are compatible with essential oil bottles of different specifications, rapid clamping is achieved, and the replacement efficiency is improved.

The invention discloses an emotion recognition, consciousness evaluation and auxiliary rehabilitation method and device based on closed-loop olfactory stimulation, and a medium, and relates to the technical field of neural function diagnosis and artificial intelligence, and the method comprises the steps: obtaining a first face image sequence of a patient under odor stimulation; inputting the first facial image into a facial action unit intensity estimation model, and obtaining a plurality of facial action unit recognition results output by the model online; determining the facial expression change intensity of the patient based on the recognition results of the plurality of facial action units; and under the condition that the facial expression change is lower than a preset threshold value, adjusting the concentration and the type of the odor stimulation in real time based on a preset concentration gradient, and re-collecting the image for evaluation. Through multiple expression intensity results, the consciousness level of the patient is determined, the olfactory consciousness brain network remaining condition is judged, a rehabilitation training scheme is formulated, and longitudinal tracking is implemented. The emotion and consciousness level of the patient can be accurately evaluated in real time, and the method is applied to olfactory stimulation assisted rehabilitation.

This invention discloses an early Parkinson's disease screening method based on olfactory evoked EEG signals. It constructs a dual-channel, cross-dimensional feature fusion framework through multimodal basic feature extraction, cross-channel feature association modeling, and adaptive feature space expansion. Before inputting features into the classification model, the feature vectors are standardized and normalized to eliminate the influence of differences in dimensions and numerical ranges among different features. Finally, an attention weight mechanism is introduced, and the processed feature vectors are input into a pre-trained classification model to output the classification result of early Parkinson's disease risk. This invention also discloses an early Parkinson's disease screening system based on olfactory evoked EEG signals. Through olfactory stimulation paradigms, low-guided cross-dimensional feature fusion dimensionality enhancement, and standardized data processing, this invention constructs a sensitive, objective, and efficient early Parkinson's disease screening model, effectively solving the problems of diagnostic lag, strong subjectivity, and single feature in existing technologies.

The invention relates to the technical field of spices, and discloses a fragrant essence, a preparation method thereof and a vehicle-mounted fragrance. In the components of the fragrance essence, through the mutual synergistic effect of 4-cyclohexyl-4-methylpentane-2-ketone, cis-2-(1, 1-dimethylethyl) cyclohexanol acetate, o-tert-butyl cyclohexyl acetate, tricyclodecenyl propionate, tricyclodecenyl acetate, 3A, 4, 5, 6, 7, 7A-hexahydro-4, 7-methylene-1H-indanol propionate, citral and eucalyptus oil, the fragrance essence has the advantages that the fragrance is enhanced, the fragrance effect is enhanced, and the fragrance quality is improved. The layering sense of fragrance release is increased, the sensitive degree to olfactory stimulation is improved, and the refreshing effect is improved. In addition, the vehicle-mounted fragrance prepared based on the fragrance essence disclosed by the invention has an obvious function of relieving driving fatigue, and meanwhile, the effects of multiple effects and enhancement of continuous effects are achieved.

According to various embodiments, a system for, and method of, presenting olfactory stimuli for olfactory dysfunction testing and training is disclosed. The system includes an integrated device. The integrated device includes: a plurality of scent chambers, where each scent chamber includes a respective material having a corresponding scent, such that the plurality of scent chambers include a plurality of different materials having a corresponding plurality of different scents. The integrated device is operable to selectively expose an aperture of an individual scent chamber, such that a corresponding scent of a corresponding material in the individual scent chamber is exposed for sampling by a user.

The invention relates to a method for identifying an emotion or a group of emotions felt by a subject after olfactory stimulation, from saliva samples of said subject implementing salivary biomarkers signature. In a second aspect, the invention also relates to a method for evaluating the capacity of an olfactory stimulus to provoke in a subject a desired emotion or group of emotions. The invention finally relates to the use of kit in the context of the present invention.

The present application relates to the field of biological research and application, and particularly relates to an olfactory stimulation system. The present application provides an olfactory stimulation system, comprising: a gas odor generating unit and an electronic control unit, the electronic control unit is connected to the gas odor generating unit, the gas odor generating unit is used for generating odor gas for olfactory test; wherein the gas odor generating unit comprises: an air providing part used for providing required preparation gas; an odor generating part comprising a plurality of channels, the odor generating part is used for generating special odor and mixing with the required preparation gas to obtain the odor gas; and an output terminal part used for conveying and adjusting the odor gas. The present application adopts a multi-channel design, can simultaneously convey different odors, and utilizes software synchronous correction and accurate control, has accurate time control, concentration control and continuous stability control.

This invention provides a wearable olfactory stimulation modulation device and method, belonging to the field of wearable intelligent modulation technology. The method includes preprocessing the original signal, removing interference artifacts and environmental noise, extracting effective EEG features, and using a lightweight depression recognition model for inference and calculation to determine the severity of the user's current depressive disorder. Based on the severity of depression, an adaptive adjustment algorithm generates olfactory stimulation control commands, specifying parameters such as odor type and delivery intensity. This invention, employing the aforementioned wearable olfactory stimulation modulation device and method, solves the limitations of existing clinical modulation methods for depressive disorders and the drawbacks of existing olfactory modulation-related devices.

The invention relates to a method for identifying an emotion or a group of emotions felt by a subject after olfactory stimulation, from saliva samples of said subject implementing salivary biomarkers signature. In a second aspect, the invention also relates to a method for evaluating the capacity of an olfactory stimulus to provoke in a subject a desired emotion or group of emotions. The invention finally relates to the use of kit in the context of the present invention.

A system and method modify the neural pathways that determine how chemical vapors are perceived and interpreted by the brain. The perception of chemical stimuli is altered by modulating the activity in one or two primary chemosensory pathways: the olfactory and trigeminal systems. By adjusting the relative activity in these pathways, abnormal and unpleasant smell sensations are treated. The system can be used to treat certain parosmias (abnormal smell sensations) and other types of dysosmias by adjusting the ratio of neural activity in the olfactory and trigeminal pathways. For example, patients with impaired olfactory function (decreased olfactory input) often report that "everything smells bad or foul." By adjusting the relative activity in the trigeminal (unpleasant) vs olfactory (pleasant) pathways the unpleasant or foul odor sensation can be treated (e.g., by blocking signals from the trigeminal system or enhancing olfactory stimulation).

The utility model provides an olfactory stimulation device, which belongs to the technical field of medical detection and comprises a gas chamber, a gas supply unit, a smell liquid supply unit and a gas chamber, the atomized smell gas generation unit is arranged in the gas chamber and used for carrying out ultrasonic atomization on the smell liquid in the gas chamber so as to generate atomized smell gas; the input end of the odor gas output unit is connected to the output end of the gas chamber, and the output end of the odor gas output unit is connected to the tested end; and the electronic control unit is electrically connected with the carrier gas supply unit, the atomized odorous gas generation unit and the odorous gas output unit respectively. The device has the beneficial effects that continuous, stable and consistent transmission of odor concentration and flow can be realized by adopting an ultrasonic atomization mode; in addition, due to the fact that the odorous liquid in the air chamber is atomized, the situation that the concentration is affected due to volatilization of the solution in the odorous liquid supply unit is avoided.

A self-verification type child attention monitoring method of the present application constructs a rich plot database according to the plot needs of children and the public needs, then calculates the child attention value according to the interaction data of the child in the interactive plot, and then can combine the difficulty value and the attention threshold to calculate the attention evaluation value, and the attention evaluation value is used as the main basis for evaluating the child attention, and in the evaluation process, the self-verification mechanism is introduced, the next interactive plot with different difficulty values is dynamically selected according to the size of the attention evaluation value of the first interactive plot, and the positive and negative correlation between the change of the attention evaluation value and the change of the difficulty value of the two interactive plots is calculated, different measures are taken based on the positive and negative correlation, if it is positive correlation, a new interactive plot containing olfactory stimulation can be introduced again, and the positive and negative correlation is evaluated again for self-verification, to ensure the reliability and accuracy of the attention monitoring result.

The utility model relates to height-adjustable olfactory stimulation tableware for pets. According to the height-adjustable olfaction stimulation tableware for the pet, the height of the tableware can be adjusted according to the size of the pet, so that the pet can take food in a comfortable posture, the smell of the pet is stimulated by the flavor of snacks in the inner vessel, the pet can well take the feed in the outer vessel, and the pet is prevented from picking food and breaking food. In addition, after the pet eats up the feed in the external vessel, the snacks in the internal vessel are used as rewards to train the pet.

The invention discloses an olfactory stimulation and physiological sensory perception linkage system, and the system comprises an olfactory stimulation device which is used for providing a bromine agent for a subject, precisely controlling the concentration of an olfactory agent, the starting time of olfactory agent stimulation and the ending time of olfactory agent stimulation, and transmitting the information of the bromine agent, the starting time of olfactory agent stimulation and the ending time of olfactory agent stimulation to a data processing device; the multi-modal physiological signal acquisition module device is used for acquiring a multi-dimensional physiological data signal of a subject in real time and transmitting the multi-dimensional physiological data signal to the data processing device; the data processing device is used for recording the multi-dimensional physiological data of the subject and marking the brominating agent information and the starting time and the ending time of olfactory agent stimulation on the time dimension of the multi-dimensional physiological data. The olfactory stimulation and physiological sensory perception linkage system is a novel olfactory stimulation system which has the advantages of precise time control, airflow stability, multi-mode physiological detection and the like.

A method for characterizing an olfactory stimulation, including visual stimulation steps each associated with a theme and first steps of recording physiological variables carried out continuously during a first visual stimulation step, so as to obtain first physiological recordings, each first physiological recording being associated with the theme associated with the first visual stimulation step, a second olfactory stimulation step, a second step of recording values of physiological variables carried out continuously during and after the second olfactory stimulation step to obtain a second physiological recording, a step of comparing the first physiological recordings with the second physiological recording to isolate a first physiological recording close to the second physiological recording, and a step of determining a theme associated with the first physiological recording which is isolated during the comparing step.

The invention belongs to the technical field of olfactory diagnosis devices, and particularly relates to an olfactory function evaluation device and method based on multi-modal physiological signal fusion, and the evaluation device comprises an olfactory stimulation module, a multi-modal physiological signal acquisition module, a synchronous control module and a data processing and analysis module; according to the olfactory function evaluation system, comprehensive evaluation of the olfactory function is achieved by synchronously collecting multi-mode physiological signals such as respiration, heart rate variability, myoelectricity, facial expression and eyeball movement and combining olfactory stimulation. According to the method, the limitation of single-mode evaluation is overcome, the accuracy and objectivity of olfactory function evaluation are improved, and the method has important clinical application value.

The present invention relates to the field of animal olfactory evaluation, and discloses an animal olfactory evaluation device and an evaluation method. Among them, the animal olfactory evaluation device includes: a transparent housing; a transparent partition plate disposed inside the transparent housing and dividing the interior of the transparent housing into an independent first cavity and a second cavity. The first cavity is communicated with the outside world, and an opening for an animal to move between the first cavity and the second cavity is provided on the transparent partition plate; a container disposed in the second cavity, and the interior of the container is communicated with the second cavity, and the container is used for containing an olfactory stimulant. The animal olfactory evaluation device can be used to evaluate the olfaction of an animal.

An adaptable stimulation system, such as but not limited to an extended reality (XR) system 5, for presenting a personalised environment to a user 20, and an associated method, computer program produc