... IEEE International Symposium on Medical Measurements and Applications : proceedings. IEEE International Symposium on Medical Measurements and Applications最新文献

{"title":"Quantitative Measurements of Brain Activations in Virtual Reality Environments","authors":"B. Divya, R. AnandhaSree., A. Kavitha","doi":"10.1109/MeMeA54994.2022.9856430","DOIUrl":"https://doi.org/10.1109/MeMeA54994.2022.9856430","url":null,"abstract":"Electrophysiology measures of the brain indicate substantial responses when the brain participates in tasks of varying complexity levels. These responses vary widely depending on the context and support in better understanding of brain functioning in healthy persons and those with neurodevelopmental problems. Virtual Reality (VR) environments of different complexities induce significantly varying event-related potentials (ERP) in the brain. In this work, the P300 wave, which is an ERP that is employed in the analysis of cognitive abilities of people has been considered for identifying brain engagement during VR based gaming processes. This work primarily focuses on identifying the brain regions that are active during virtual reality gaming environments of varying complexity levels. Further, the analysis to identify the optimal electrode locations for the P300 acquisition for the respective Brain-Computer Interface (BCI) application has also been performed. Various performance metrics such as task engagement, arousal and valence have been identified to infer the participant's mental state at the time of cognitive training with P300 based BCI. Thus, this work seems to support the neuro game developers to identify the active brain regions under various cognitive tasks and assist the participants to be more engaged in the VR based game.","PeriodicalId":91989,"journal":{"name":"... IEEE International Symposium on Medical Measurements and Applications : proceedings. IEEE International Symposium on Medical Measurements and Applications","volume":"2014 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86563478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The performance of Kinect in assessing the shoulder joint mobility","authors":"L. D. Paolis, V. D. Luca","doi":"10.1109/MeMeA49120.2020.9137213","DOIUrl":"https://doi.org/10.1109/MeMeA49120.2020.9137213","url":null,"abstract":"Motor impairments affecting old people require a regular and reliable monitoring of the body functional autonomy. Low cost camera-based systems, initially designed for entertainment applications, have been evaluated for a possible adoption in diagnosis and rehabilitation. Unfortunately, their adoption is partially hampered by noise, precision and accuracy issues. In this paper we evaluate the performance of the Kinect One sensor in assessing the shoulder joint mobility in subjects with different body sizes: we measure the maximum angle reached by a patient raising his/her arms, the time needed to perform such action and the time the patient is able to keep his/her arms up. The preliminary tests conducted on two healthy subjects revealed no significant difference in terms of relative error among measures collected for subjects with different body heights and sizes. However, statistical tests suggested a correlation between the relative errors on large angle amplitudes and the time spent with arms up.","PeriodicalId":91989,"journal":{"name":"... IEEE International Symposium on Medical Measurements and Applications : proceedings. IEEE International Symposium on Medical Measurements and Applications","volume":"1 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72960451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of a low-cost markerless system for 3D gait analysis","authors":"E. D'Antonio, Juri Taborri, E. Palermo, S. Rossi, F. Patané","doi":"10.1109/MeMeA49120.2020.9137236","DOIUrl":"https://doi.org/10.1109/MeMeA49120.2020.9137236","url":null,"abstract":"","PeriodicalId":91989,"journal":{"name":"... IEEE International Symposium on Medical Measurements and Applications : proceedings. IEEE International Symposium on Medical Measurements and Applications","volume":"68 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74327051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Atrial fibrillation predictor with reject option using belief functions theory","authors":"M. Mroueh, F. Mourad, F. Abdallah","doi":"10.1109/MeMeA49120.2020.9137312","DOIUrl":"https://doi.org/10.1109/MeMeA49120.2020.9137312","url":null,"abstract":"","PeriodicalId":91989,"journal":{"name":"... IEEE International Symposium on Medical Measurements and Applications : proceedings. IEEE International Symposium on Medical Measurements and Applications","volume":"59 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87573050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Double Tuned 1H-23Na Birdcage Coils for MRI at 7 T : Performance evaluation through electromagnetic simulations","authors":"Francesca Maggiorelli, A. Retico, E. Boskamp, F. Robb, A. Galante, M. Fantasia, M. Alecci, M. Tosetti, G. Tiberi","doi":"10.1109/MeMeA.2018.8438777","DOIUrl":"https://doi.org/10.1109/MeMeA.2018.8438777","url":null,"abstract":"The aim of the present study is the electromagnetic evaluation of a ‘four-ring’ double-tuned (DT) birdcage coil designed for head imaging. The model consists of an inner Low-Pass (LP) birdcage coil and two externally nested High-Pass (HP) birdcage-like coils. LP and HP structures are tuned at the 23Na and 1H Larmor frequency at 7 T, respectively. Dimensional parameters are varied in order to optimize the radio frequency (RF) B 1 + field homogeneity at both Larmor frequencies. Results show that B 1 + field homogeneity at the 1H Larmor frequency can be considerably increased by optimizing the mutual distance between the inner and outer coil structure length. This result is particularly significant in case of MRI at 7 T, to correct for the ‘intrinsically’ inhomogeneous B 1 + field due to the short wavelength.","PeriodicalId":91989,"journal":{"name":"... IEEE International Symposium on Medical Measurements and Applications : proceedings. IEEE International Symposium on Medical Measurements and Applications","volume":"105 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72831669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multifunctional System for Observing, Measuring and Analyzing Stimulation-Evoked Neurochemical Signaling.","authors":"Christopher J Kimble,&nbsp;Joshua B Boesche,&nbsp;Diane R Eaker,&nbsp;Kenneth R Kressin,&nbsp;James K Trevathan,&nbsp;Seungleal Paek,&nbsp;Anders J Asp,&nbsp;Malcolm B McIntosh,&nbsp;J Luis Lujan","doi":"10.1109/MeMeA.2017.7985901","DOIUrl":"https://doi.org/10.1109/MeMeA.2017.7985901","url":null,"abstract":"<p><p>The ability to measure neurotransmitter activity using implanted electrochemical sensors offers researchers a potent technique for analyzing neural activity across specific neural circuitry. We have developed a wirelessly controlled device, WINCS Harmoni, to observe and measure neurotransmitter dynamics at up to four separate sensors, with high temporal and spatial resolution. WINCS Harmoni also incorporates a versatile neurostimulator that can be synchronized with electrochemical recording. The WINCS Harmoni platform is thus optimally suited for probing the neurochemical effects of neurostimulation, and may in turn enable the development of personalized therapies for multiple brain disorders.</p>","PeriodicalId":91989,"journal":{"name":"... IEEE International Symposium on Medical Measurements and Applications : proceedings. IEEE International Symposium on Medical Measurements and Applications","volume":"2017 ","pages":"349-354"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/MeMeA.2017.7985901","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35217409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Detection of Norepinephrine in Whole Blood via Fast Scan Cyclic Voltammetry.","authors":"Evan N Nicolai, James K Trevathan, Erika K Ross, J Luis Lujan, Charles D Blaha, Kevin E Bennet, Kendall H Lee, Kip A Ludwig","doi":"10.1109/MeMeA.2017.7985859","DOIUrl":"10.1109/MeMeA.2017.7985859","url":null,"abstract":"<p><p>Bioelectronic Medicines is an emerging field that capitalizes on minimally-invasive technology to stimulate the autonomic nervous system in order to evoke therapeutic biomolecular changes at the end-organ. The goal of Bioelectronic Medicines is to realize both 'precision and personalized' medicine. 'Precise' stimulation of neural circuitry creates biomolecular changes targeted exactly where needed to maximize therapeutic effects while minimizing off-target changes associated with side-effects. The therapy is then 'personalized' by utilizing implanted sensors to measure the biomolecular concentrations at, or near, the end-organ of interest and continually adjusting therapy to account for patient-specific biological changes throughout the day. To realize the promise of Bioelectronic Medicines, there is a need for minimally invasive, real-time measurement of biomarkers associated with the effects of autonomic nerve stimulation to be used for continuous titration of therapy. In this study we examine the feasibility of using fast scan cyclic voltammetry (FSCV) to measure norepinephrine levels, a neurochemical relevant to end-organ function, directly from blood. FSCV is a well-understood method for measuring electroactive neurochemicals in the central nervous system with high temporal and high spatial resolution that has yet to be adapted to the study of the autonomic nervous system. The results demonstrate that while detecting the electroactive neurochemical norepinephrine in blood is more challenging than obtaining the same FSCV measurements in a buffer solution due to biofouling of the electrode, it is feasible to utilize a minimally invasive FSCV electrode to obtain neurochemical measurements in blood.</p>","PeriodicalId":91989,"journal":{"name":"... IEEE International Symposium on Medical Measurements and Applications : proceedings. IEEE International Symposium on Medical Measurements and Applications","volume":"2017 ","pages":"111-116"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5698011/pdf/nihms919842.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35640552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Automated head motion system improves reliability and lessens operator dependence for head impulse testing of vestibular reflexes.","authors":"Grace X Tan,&nbsp;Desi P Schoo,&nbsp;Charles C Della Santina,&nbsp;Mehdi A Rahman,&nbsp;Nicolas S Valentin Contreras,&nbsp;Chen-Hsin Sun,&nbsp;Bryce Chiang","doi":"10.1109/MeMeA.2017.7985856","DOIUrl":"https://doi.org/10.1109/MeMeA.2017.7985856","url":null,"abstract":"<p><p>Deficiency of the eye-stabilizing vestibulo-ocular reflex (VOR) is a defining feature in multiple diseases of the vestibular labyrinth, which comprises the inner ear's sensors of head rotation, translation and orientation. Diagnosis of these disorders is facilitated by observation and measurement of eye movements during and after head motion. The <i>video head impulse test</i> has recently garnered interest as a clinical diagnostic assessment of vestibular dysfunction. In typical practice, it involves use of video-oculography goggles to measure eye movements while a clinician examiner grasps the subject's head and manually rotates it left or right at sufficient acceleration to cover ~20 deg over ~150 mS, reaching a peak velocity of >120 deg/S midway through the movement. Manual delivery of head impulses incurs significant trial-by-trial, inter-session and inter-operator variability, which lessens the test's reliability, efficiency, safety and standardization across testing facilities. We describe application of a novel, compact and portable automated head impulse test (aHIT™) device that delivers highly repeatable head motion stimuli about axes parallel to those of the vestibular labyrinth's six semicircular canals, with programmable Gaussian and sinusoidal motion profiles at amplitudes, velocities and accelerations sufficient to test VOR function over the spectral range for which the VOR dominates other vision-stabilizing reflexes. We tested the aHIT™ on human subjects and demonstrated its high reproducibility compared to manually delivered head impulses. This device has the potential to be a valuable clinical and research tool for diagnostic evaluation and investigation of the vestibular system.</p>","PeriodicalId":91989,"journal":{"name":"... IEEE International Symposium on Medical Measurements and Applications : proceedings. IEEE International Symposium on Medical Measurements and Applications","volume":"2017 ","pages":"94-99"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/MeMeA.2017.7985856","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36497393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High Performance, Low Cost Carbon Nanotube Yarn based 3D Printed Electrodes Compatible with a Conventional Screen Printed Electrode System.","authors":"Cheng Yang, B Jill Venton","doi":"10.1109/MeMeA.2017.7985857","DOIUrl":"10.1109/MeMeA.2017.7985857","url":null,"abstract":"<p><p>3D printing technology has been widely used as a rapid prototyping fabrication tool in several fields, including electrochemistry. In this work, we incorporate 3D printing technology with carbon nanotube yarns for electrochemical sensing of dopamine in the presence of ascorbic acid and uric acid. The novel 3D printed electrode provides a circular concavity detection zone with grooves to insert three electrodes. The electrode connections are fully compatible with conventional screen printed electrode workstation setups. The CNT yarn 3D printed electrode showed excellent electrocatalytic activity for the redox reaction of dopamine (DA) in the presence of ascorbic acid (AA) and uric acid (UA). Three well-defined sharp and fully resolved anodic peaks were found with the peak potentials using cyclic voltammetry (CV) at 50 mV, 305 mV, and 545 mV for AA, DA, and UA respectively and using differential pulse voltammetry (DPV) at 91 mV, 389 mV, and 569 mV, respectively. DA detection limit was 0.87 ± 0.09 μM. The CNT yarn 3D printed electrode displayed high reproducibility and stability. The electrode design enables the study of electrode reactions at the sidewall of CNTs, which cannot be performed using electrodes made by conventional fabrication methods. The new fabrication method provides a new platform to prototype new electrode materials for electrochemistry, providing a low-cost, customizable design compatible existing screen printed electrodes technology.</p>","PeriodicalId":91989,"journal":{"name":"... IEEE International Symposium on Medical Measurements and Applications : proceedings. IEEE International Symposium on Medical Measurements and Applications","volume":"2017 ","pages":"100-105"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5589149/pdf/nihms898803.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35498347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vibrotactile sensory substitution on personal navigation: Remotely controlled vibrotactile feedback wearable system to aid visually impaired","authors":"Thiago Silva Filgueiras, A. Lima, Renan Lima Baima, Gabriel Tadayoshi Rodrigues Oka, L. A. Q. Cordovil, Moises Pereira Bastos","doi":"10.1109/MeMeA.2016.7533768","DOIUrl":"https://doi.org/10.1109/MeMeA.2016.7533768","url":null,"abstract":"Tactile sensory substitution is a field of science and engineering that studies the intersection of neuroscience, haptics, human sensory physiology, and the function of perception. Tactile feedback (e.g., vibrations and pressure) provides one solution to aid visually impaired. This paper presents the development and assessment of a simple pilot wearable system with vibrotactile feedback. We followed an iterative approach in which the proposed system went through user evaluations and technical refinements. The final prototype includes vibrotactile feedback for orientation with two unobtrusive actuators in contact with each arm of the user. Sixteen blindfolded sighted were invited to conduct travel experiments in a mutable labyrinth. Their evaluation was registered in video record. A post-experiment interview regarding the usefulness of the proposed system for the participants was performed. Our study indicates our pilot system is useful to provide unobtrusive indications of the level of proximity of an obstacle and the personal orientation in a controlled environment. The goal is to use the vibrotactile feedback on navigation of visually impaired people and inform the research community and society about the capabilities of these navigation systems. It is the first study involving vibrotactile feedback and we will consider the results for future works. We consider this work important because the projects involving vibrotactile in literature cover mainly the GPS technologies, in outdoor environments. We intend to prove that vibrotactile feedback is a good option in indoor and small environment, as house and office, in local application, using low cost enhancements in known objects at indoor environments. The study provided great empirical data and meaningful insight and information for the design of projects involving technologies of vibration for future application.","PeriodicalId":91989,"journal":{"name":"... IEEE International Symposium on Medical Measurements and Applications : proceedings. IEEE International Symposium on Medical Measurements and Applications","volume":"74 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83764732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}