Filtered By:
Source: Sensors

This page shows you your search results in order of date. This is page number 15.

Order by Relevance | Date

Total 332 results found since Jan 2013.

Sensors, Vol. 21, Pages 572: Induction of Neural Plasticity Using a Low-Cost Open Source Brain-Computer Interface and a 3D-Printed Wrist Exoskeleton
In conclusion, it is possible to detect imaginary movements using an open-source BCI setup and control a cheap 3D-printed exoskeleton that when combined with the BCI can induce neural plasticity. These findings may promote the availability of BCI technology for rehabilitation clinics and home-use. However, the usability must be improved, and further tests are needed with stroke patients.
Source: Sensors - January 15, 2021 Category: Biotechnology Authors: Mads Jochumsen Taha Al Muhammadee Janjua Juan Carlos Arceo Jimmy Lauber Emilie Simoneau Buessinger Rasmus Leck K æseler Tags: Article Source Type: research

Sensors, Vol. 21, Pages 490: Brain Temperature Measured by Magnetic Resonance Spectroscopy to Predict Clinical Outcome in Patients with Infarction
Teiji Tominaga Acute ischemic stroke is characterized by dynamic changes in metabolism and hemodynamics, which can affect brain temperature. We used proton magnetic resonance (MR) spectroscopy under everyday clinical settings to measure brain temperature in seven patients with internal carotid artery occlusion to explore the relationship between lesion temperature and clinical course. Regions of interest were selected in the infarct area and the corresponding contralateral region. Single-voxel MR spectroscopy was performed using the following parameters: 2000-ms repetition time, 144-ms echo time, and 128 excitations. ...
Source: Sensors - January 12, 2021 Category: Biotechnology Authors: Tomohisa Ishida Takashi Inoue Tomoo Inoue Toshiki Endo Miki Fujimura Kuniyasu Niizuma Hidenori Endo Teiji Tominaga Tags: Brief Report Source Type: research

Sensors, Vol. 21, Pages 460: Trends and Challenges of Wearable Multimodal Technologies for Stroke Risk Prediction
wan We review in this paper the wearable-based technologies intended for real-time monitoring of stroke-related physiological parameters. These measurements are undertaken to prevent death and disability due to stroke. We compare the various characteristics, such as weight, accessibility, frequency of use, data continuity, and response time of these wearables. It was found that the most user-friendly wearables can have limitations in reporting high-precision prediction outcomes. Therefore, we report also the trend of integrating these wearables into the internet of things (IoT) and combining electronic health records (...
Source: Sensors - January 11, 2021 Category: Biotechnology Authors: Yun-Hsuan Chen Mohamad Sawan Tags: Review Source Type: research

Sensors, Vol. 21, Pages 424: Photoacoustic Imaging of Human Vasculature Using LED versus Laser Illumination: A Comparison Study on Tissue Phantoms and In Vivo Humans
Kothapalli Vascular diseases are becoming an epidemic with an increasing aging population and increases in obesity and type II diabetes. Point-of-care (POC) diagnosis and monitoring of vascular diseases is an unmet medical need. Photoacoustic imaging (PAI) provides label-free multiparametric information of deep vasculature based on strong absorption of light photons by hemoglobin molecules. However, conventional PAI systems use bulky nanosecond lasers which hinders POC applications. Recently, light-emitting diodes (LEDs) have emerged as cost-effective and portable optical sources for the PAI of living subjects. Howev...
Source: Sensors - January 9, 2021 Category: Biotechnology Authors: Agrawal Kuniyil Ajith Singh Johnstonbaugh Han Pameijer Kothapalli Tags: Article Source Type: research

Sensors, Vol. 21, Pages 324: Arm-Stroke Descriptor Variability during 200-m Front Crawl Swimming
gio Gatta The present study aimed to explore the variability of the arm-stroke temporal descriptors between and within laps during middle-distance swimming event using IMMUs. Eight male swimmers performed a 200-m maximum front-crawl in which the inter-lap and intra-lap variability of velocity, stroke rate, stroke-phases duration and arm-coordination index were measured through five units of IMMU. An algorithm computes the 3D coordinates of the wrist by means the IMMU orientation and the kinematic chain of upper arm biomechanical model, and it recognizes the start events of the four arm-stroke phases. Velocity and strok...
Source: Sensors - January 6, 2021 Category: Biotechnology Authors: Matteo Cortesi Rocco Di Michele Silvia Fantozzi Sandro Bartolomei Giorgio Gatta Tags: Article Source Type: research

Sensors, Vol. 21, Pages 234: Model Evaluation of the Influence of the Plunger Stroke on Functional Parameters of the Low-Pressure Pulse Gas Solenoid Injector
er The article presents a model-based evaluation of the impact of the plunger stroke on functional parameters of the low-pressure pulse gas solenoid injector. A reduced-order physics-based mathematical model was used to achieve this goal. The model was built on the basis of specified simplifications of the process, considering the forces that cause the plunger to move and the forces constituting resistance to its displacement. The implementation of a mathematical description in to the Matlab-Simulink environment allowed one to determine the characteristic values of operation of the Valtek Rail Type-30 injector, includi...
Source: Sensors - January 1, 2021 Category: Biotechnology Authors: Dariusz Szpica Micha ł Kusznier Tags: Article Source Type: research

Sensors, Vol. 21, Pages 156: Bed-Based Ballistocardiography: Dataset and Ability to Track Cardiovascular Parameters
Conclusion: A collection of synchronized, heart-driven signals, including BCGs, ECGs, PPGs, and blood pressure waveforms, was acquired and made publicly available. An initial study indicated that bed-based ballistocardiography can be used to track beat-to-beat changes in systolic blood pressure and stroke volume. Significance: To the best of the authors’ knowledge, no other database that includes time-aligned ECG, PPG, BCG, and continuous blood pressure data is available to the public. This dataset could be used by other researchers for algorithm testing and development in this fast-growing field of health as...
Source: Sensors - December 29, 2020 Category: Biotechnology Authors: Charles Carlson Vanessa-Rose Turpin Ahmad Suliman Carl Ade Steve Warren David E. Thompson Tags: Article Source Type: research

Sensors, Vol. 20, Pages 7338: Principal Characteristics of Affected and Unaffected Side Trunk Movement and Gait Event Parameters during Hemiplegic Stroke Gait with IMU Sensor
Conclusions: The difference between each side leg should be considered during the development of a diagnosis method. This research can be utilized to develop functional assessment tools for personalized treatment and to design appropriate training protocols.
Source: Sensors - December 21, 2020 Category: Biotechnology Authors: Jeong-Woo Seo Seul-Gee Kim Joong Il Kim Boncho Ku Kahye Kim Sangkwan Lee Jaeuk U. Kim Tags: Letter Source Type: research

Sensors, Vol. 20, Pages 7312: 3D Motion Capture May Detect Spatiotemporal Changes in Pre-Reaching Upper Extremity Movements with and without a Real-Time Constraint Condition in Infants with Perinatal Stroke and Cerebral Palsy: A Longitudinal Case Series
C. Heathcock Perinatal stroke (PS), occurring between 20 weeks of gestation and 28 days of life, is a leading cause of hemiplegic cerebral palsy (HCP). Hallmarks of HCP are motor and sensory impairments on one side of the body—especially the arm and hand contralateral to the stroke (involved side). HCP is diagnosed months or years after the original brain injury. One effective early intervention for this population is constraint-induced movement therapy (CIMT), where the uninvolved arm is constrained by a mitt or cast, and therapeutic activities are performed with the involved arm. In this preliminary in...
Source: Sensors - December 19, 2020 Category: Biotechnology Authors: Julia Mazzarella Mike McNally Daniel Richie Ajit M. W. Chaudhari John A. Buford Xueliang Pan Jill C. Heathcock Tags: Article Source Type: research

Sensors, Vol. 20, Pages 7285: An Ensemble-Based Approach to Anomaly Detection in Marine Engine Sensor Streams for Efficient Condition Monitoring and Analysis
This study proposes an unsupervised anomaly detection method using sensor streams from the marine engine to detect the anomalous system behavior, which may be a possible sign of system failure. Previous works on marine engine anomaly detection proposed a clustering-based or statistical control chart-based approach that is unstable according to the choice of hyperparameters, or cannot fit well to the high-dimensional dataset. As a remedy to this limitation, this study adopts an ensemble-based approach to anomaly detection. The idea is to train several anomaly detectors with varying hyperparameters in parallel and then combi...
Source: Sensors - December 18, 2020 Category: Biotechnology Authors: Donghyun Kim Sangbong Lee Jihwan Lee Tags: Article Source Type: research

Sensors, Vol. 20, Pages 7073: The Validity and Reliability of the Microsoft Kinect for Measuring Trunk Compensation during Reaching
erg Compensatory movements at the trunk are commonly utilized during reaching by persons with motor impairments due to neurological injury such as stroke. Recent low-cost motion sensors may be able to measure trunk compensation, but their validity and reliability for this application are unknown. The purpose of this study was to compare the first (K1) and second (K2) generations of the Microsoft Kinect to a video motion capture system (VMC) for measuring trunk compensation during reaching. Healthy participants (n = 5) performed reaching movements designed to simulate trunk compensation in three different directions and...
Source: Sensors - December 10, 2020 Category: Biotechnology Authors: Matthew H. Foreman Jack R. Engsberg Tags: Article Source Type: research

Sensors, Vol. 20, Pages 7058: Self-Abrading Servo Electrode Helmet for Electrical Impedance Tomography
id Holder Electrical Impedance Tomography (EIT) is a medical imaging technique which has the potential to reduce time to treatment in acute stroke by rapidly differentiating between ischaemic and haemorrhagic stroke. The potential of these methods has been demonstrated in simulation and phantoms, it has not yet successfully translated to clinical studies, due to high sensitivity to errors in scalp electrode mislocation and poor electrode-skin contact. To overcome these limitations, a novel electrode helmet was designed, bearing 32 independently controlled self-abrading electrodes. The contact impedance was reduced thro...
Source: Sensors - December 9, 2020 Category: Biotechnology Authors: James Avery Brett Packham Hwan Koo Ben Hanson David Holder Tags: Article Source Type: research

Sensors, Vol. 20, Pages 6826: Optimization and Experiment of a Novel Compliant Focusing Mechanism for Space Remote Sensor
ng Tong The change of an external environment leads to the defocusing phenomenon of the space optical remote sensor. The performance of the focusing mechanism is related to the image quality of the remote sensor. It was optimized for a novel focusing mechanism comprised of a flexural hinge lever-type amplifier and several piezoelectric ceramics to improve the performance on high loads and large stroke in this research. It has advantages of a lightweight, simple structure and high reliability compared with the traditional focusing mechanism. The input displacement from the piezoelectric actuators was amplified by a two-...
Source: Sensors - November 29, 2020 Category: Biotechnology Authors: Yan Li Wenjie Ge Xu Zhang Xinxing Tong Tags: Article Source Type: research

Sensors, Vol. 20, Pages 6763: Decoding Attempted Hand Movements in Stroke Patients Using Surface Electromyography
This study investigates whether nine different motion classes of the hand and forearm could be decoded from forearm EMG in 15 stroke patients. This study also evaluates the test-retest reliability of a classical, but simple, classifier (linear discriminant analysis) and advanced, but more computationally intensive, classifiers (autoencoders and convolutional neural networks). Moreover, the association between the level of motor impairment and classification accuracy was tested. Three channels of surface EMG were recorded during the following motion classes: Hand Close, Hand Open, Wrist Extension, Wrist Flexion, Supination,...
Source: Sensors - November 26, 2020 Category: Biotechnology Authors: Mads Jochumsen Imran Khan Niazi Muhammad Zia ur Rehman Imran Amjad Muhammad Shafique Syed Omer Gilani Asim Waris Tags: Article Source Type: research

Sensors, Vol. 20, Pages 6355: Economical Auto Moment Limiter for Preventing Mobile Cargo Crane Overload
This study presents a computational method called economical auto moment limiter (eAML) that prevents a mobile cargo crane from being overloaded. The eAML detects and controls, in real time, crane overload without using boom stroke sensors and load cells, which are expensive items inevitable to existing AML systems, hence, being competitive in price. It replaces these stroke sensors and load cells that are used for the crane overload measurement with a set of mathematical formula and control logics that calculates the lifting load being handled under crane operation and the maximum lifting load. By calculating iterative th...
Source: Sensors - November 7, 2020 Category: Biotechnology Authors: Soo-Hoon Noh Yong-Seok Lee Sang-Ho Kim Jae-Sang Cho Chang-Soo Han Seung-Yeol Lee Dong-Eun Lee Tags: Article Source Type: research