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Showing 1-25 of 7,908 resultsfor "Index Terms":Number Of Electrodes
"Index Terms":Number Of Electrodes
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Endoneural selective stimulating using wire-microelectrode arrays
In acute experiments eight 5- to 24-wire-microelectrode arrays were inserted into the common peroneal nerve of the rat, to investigate whether the electrodes could selectively stimulate motor units of the extensor digitorum longus (EDL) muscle. Twitch-force-recruitment curves were measured from the EDL for each array electrode. The curves were plotted on a double-logarithmic scale and parameterize...Show More
Electrocardiographic motion artifact versus electrode impedance
S.R. Wiese;P. Anheier;R.D. Connemara;A.T. Mollner;T.F. Neils;J.A. Kahn;J.G. Webster
We degraded electrocardiographic electrodes by exposing them to air for four days and evaluated them on 12 subjects. After application, we recorded the electrocardiogram (including motion artifact), missed QRS detections and electrode impedance during 5 min of arm and body movements. Missed QRS detections increased with electrode impedance but correlation was poor. Increased electrode impedance wa...Show More
Mutual Information of Tri-polar Concentric Ring Electrodes
2006 International Conference of the IEEE Engineering in Medicine and Biology Society
Year: 2006 | Conference Paper |
Electroencephalography (EEG) signals are spatio-temporal. EEG has very good temporal resolution but typically doesn't possess high spatial resolution. The surface Laplacian enhances the spatial resolution and selectivity of the surface electrical activity. Concentric ring electrodes have been shown to estimate the surface Laplacian directly with significantly better spatial resolution than convent...Show More
Ozone Emission and Electrical Characteristics of Ionizers With Different Electrode Materials, Numbers, and Diameters
We investigated the ozone emission characteristics of ionizers differing in terms of the materials, edge numbers, and diameters of their high-voltage electrodes. Our goal was to determine the low ozone emission performance of a carbon brush ionizer that we developed in our previous research on a two-stage electrostatic precipitator (ESP) for cleaning indoor air and exhaust gases from industry. We ...Show More
Intersection of microwire electrodes with proximal CA1 stratum-pyramidale neurons at insertion for multiunit recordings predicted by a 3-D computer model
It is of broad interest in the context of neuronal multiunit extracellular recordings to understand electrode-tissue interactions in order to maximize the number of recordable units and to minimize experimental artifacts due to mechanical tissue alteration. Toward this goal, a computer model of microwire electrode insertion in hippocampus CA1 area was developed, firstly to provide estimates of the...Show More
Effect of Metal Electrodes on Surface Acoustic Wave Properties in Bulk Z-Cut GaN Crystal
The effect of metal electrodes on surface acoustic wave (SAW) properties in bulk semi-insulating Z-cut GaN crystal was measured for the first time. A SAW synchronous two-port resonator was used for these measurements. Such SAW parameters as velocity, electromechanical coupling coefficient, and reflection coefficient of a single reflecting strip were determined by matching the measured and calculat...Show More
A Neural Probe With Up to 966 Electrodes and Up to 384 Configurable Channels in 0.13 $\mu$m SOI CMOS
Carolina Mora Lopez;Jan Putzeys;Bogdan Cristian Raducanu;Marco Ballini;Shiwei Wang;Alexandru Andrei;Veronique Rochus;Roeland Vandebriel;Simone Severi;Chris Van Hoof;Silke Musa;Nick Van Helleputte;Refet Firat Yazicioglu;Srinjoy Mitra
In vivo recording of neural action-potential and local-field-potential signals requires the use of high-resolution penetrating probes. Several international initiatives to better understand the brain are driving technology efforts towards maximizing the number of recording sites while minimizing the neural probe dimensions. We designed and fabricated (0.13-μm SOI Al CMOS) a 384-channel configurabl...Show More
A Neural Probe With Up to 966 Electrodes and Up to 384 Configurable Channels in 0.13 $\mu$m SOI CMOS
Carolina Mora Lopez;Jan Putzeys;Bogdan Cristian Raducanu;Marco Ballini;Shiwei Wang;Alexandru Andrei;Veronique Rochus;Roeland Vandebriel;Simone Severi;Chris Van Hoof;Silke Musa;Nick Van Helleputte;Refet Firat Yazicioglu;Srinjoy Mitra
Reduction of power line interference using active electrodes and a driven-right-leg circuit in electroencephalographic recording with a minimum number of electrodes
The 26th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Year: 2004 | Conference Paper |
Unwanted power line interference is one of the most common problems in electroencephalographic recording. This paper examines how the use of active electrodes together with a driven-right-leg circuit can significantly improve interference reduction, even when the same electrode is used for common and reference which is attractive because it saves an electrode. General conclusions about the active ...Show More
Ozone emission and electrical characteristics of ionizers with different electrode materials, numbers, and diameters
Hak-Joon Kim;Bangwoo Han;Chang-Gyu Woo;Yong-Jin Kim;Seong-Jin Park;Jong-Pil Yoon
2015 IEEE Industry Applications Society Annual Meeting
Year: 2015 | Conference Paper |
Cited by: Papers (5)
We investigated ozone emission characteristics of ionizers with different materials, edge numbers, and diameters of the high voltage electrode of an ionizer to understand low ozone emission performance of a carbon brush ionizer which was successfully developed in our previous researches on a two-stage ESP for cleaning indoor air and exhaust gases from industries. Corona discharge current and ozone...Show More
Neuro-electronic interfacing with multielectrode arrays
W.L.C. Rutten;J.P.A. Smit;T.A. Frieswijk;J.A. Bielen;A.L.H. Brouwer;J.R. Buitenweg;C. Heida
This article reports on the selectivity experimentally obtained with a hand-made 24-fold 2D array with electrodes spaced at 120 μm in the rat peroneal nerve and extensor digitorum longum muscle. We call the device 2D, as all the electrode tips lie in the same plane. The device itself is a 3D multiple needle array. The design and construction of a 128-fold 3D array in silicon- and glass technology ...Show More
True random number generation exploiting SET voltage variability in resistive RAM memory arrays
Jeremy Postel-Pellerin;Hussein Bazzi;Hassen Aziza;Pierre Canet;Mathieu Moreau;Vincenzo Della Marca;Adnan Harb
2019 19th Non-Volatile Memory Technology Symposium (NVMTS)
Year: 2019 | Conference Paper |
Cited by: Papers (13)
A novel True Random Number Generator circuit fabricated in a 130nm HfO2-based resistive RAM process is presented. The generation of the random bit stream is based on a specific programming sequence applied to a dedicated memory array. In the proposed programming scheme, the voltage applied to the cells of the memory array is fixed at the median SET voltage of the distribution, to program only a su...Show More
An Analysis of EMG Electrode Configuration for Targeted Muscle Reinnervation Based Neural Machine Interface
Targeted muscle reinnervation (TMR) is a novel neural machine interface for improved myoelectric prosthesis control. Previous high-density (HD) surface electromyography (EMG) studies have indicated that tremendous neural control information can be extracted from the reinnervated muscles by EMG pattern recognition (PR). However, using a large number of EMG electrodes hinders clinical application of...Show More
Possible Four-Electrode Configurations for Measuring Cardiac Tissue Fiber Rotation
A number of electrode configurations, based on the usual four-electrode probe, are analysed in relation to the effect that changes in cardiac fiber rotation have on the potentials measured. Simulations are carried out using a mathematical model and a new solution technique, based on Fourier series followed by a simple one-dimensional finite difference scheme. This electrode analysis leads to the p...Show More
Precision Electrode System for Electrical Impedance Myography
2020 Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology (USBEREIT)
Year: 2020 | Conference Paper |
Cited by: Papers (8)
Currently, commonly used methods of control, in particular, based on electromyogram signals, do not allow to get detailed information about biomechanical characteristics of muscle activity. As a result, it is not possible to determine the type of movement of the limb segment and its force-moment parameters. An urgent task is to study new methods of anthropomorphic bionic control based on measured ...Show More
An Investigation of the Effect of Different Number of Electrodes on EIT Reconstructed Images
2020 IEEE 2nd International Conference on Artificial Intelligence in Engineering and Technology (IICAIET)
Year: 2020 | Conference Paper |
Cited by: Papers (3)
Electrical Impedance Tomography (EIT) is an imaging technique which is used in both industrial process and medical imaging, as it is non-invasive and versatile. One of the factors that contribute to image quality is electrode. This work investigates the effect of the different number of electrodes on EIT reconstructed images for various widths of electrodes. Spectral analyses, sensitivity analyses...Show More
Effect of Electrode Type on Non-Thermal Plasma Production
2022 International Congress on Human-Computer Interaction, Optimization and Robotic Applications (HORA)
Year: 2022 | Conference Paper |
The atmospheric pressure plasma jet (APPJ) is a promising technique because its robustness of applying in many fields, due to its advantages such as high efficiency, safety, no toxic residue, and low cost. Therefore, in this paper, a simple yet approach has been implemented to optimize the better electrode types in the system of the plasma jet. A low-cost homemade plasma jet system is being utiliz...Show More
This paper is a review of multi-channel surface electromyography (sEMG) electrode used in the research for investigating the properties of muscles. Over 300 papers from five recognized journals were examined from the year 2000 to 2013 with only 64 stating the use of multi-channel electrodes in their research. The review determined that multi-channel electrodes can be classified as linear array or ...Show More
Embroidered archimedean spiral electrodes for contactless prosthetic control
2017 International Conference on Rehabilitation Robotics (ICORR)
Year: 2017 | Conference Paper |
Cited by: Papers (5)
With continuous advancements on active prosthetics the detection of the user's intention becomes the new technological bottleneck. While electromyography (EMG) is widely used to detect individual muscular contributions, sweat and relative sensor movements degrade the quality of the signal over time. In this paper, we bypass the problems created with the skin contact analyzing the muscular activati...Show More
Generic Dry-Contact Ear-EEG
A. R. Bertelsen;H. Bladt;C. B. Christensen;S. L. Kappel;H. O. Toft;M. L. Rank;K. B. Mikkelsen;P. Kidmose
2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)
Year: 2019 | Conference Paper |
Cited by: Papers (7)
Generic dry-contact ear-EEG allows for discreet, user-friendly, unobtrusive, cost-effective and convenient recordings of EEG in real-life settings. In this study we introduce a new generic earpiece design with larger internal ear electrode distances, resulting in an increased spatial coverage compared to previous generic earpiece designs. The signal quality of ear-Fpz, within-ear (the measuring an...Show More
Theoretical Modelling of Interdigitated Electrode Sensor for Mammalian Cell Characterization
2018 7th International Conference on Computer and Communication Engineering (ICCCE)
Year: 2018 | Conference Paper |
Cited by: Papers (3)
Interdigitated Electrodes (IDEs) have been widely used in biological cellular characterization such as the Electrical Cell-Substrate Impedance Sensing (ECIS). Optimization of IDEs are crucial to obtain high accuracy of measurement that associates with the biological cell activities. However, not much research studies the generation of electric field by the IDEs geometry especially in cellular appl...Show More
Combined external and internal electrodes in EIT for deep changes: A simulation study
Duc Nguyen Minh;Danyi Zhu;Craig Jin;Alistair McEwan;Pierre Qian;Tony Barry
2016 International Conference on Biomedical Engineering (BME-HUST)
Year: 2016 | Conference Paper |
Cited by: Papers (1)
Electrical Impedance Tomography can detect changes within human body like tumours, ventilation or cardiac abnormalities using electrodes on the surface. However, EIT images are poor when the changes occur far from the electrodes, in the deep, innermost tissue. A possible method to improve measurements is to position one or more internal electrodes near the expected location of the impedance change...Show More
Comparison of grounding methods for utility scale PV plants
2020 International SAUPEC/RobMech/PRASA Conference
Year: 2020 | Conference Paper |
Cited by: Papers (1)
This paper compares the different prescribed grounding methods such as type A, B and pile driven mounting as possible solutions to effectively ground a PV plant. Conventional methods of grounding structures are in many cases better suited for small surface area structures compared to that of the utility scale PV plants being simulated in this study. Using the IEC 623050 standard as basis for creat...Show More
Design of High-Precision Capacitive Touch Electrodes and Coordinate Detection Algorithm
2023 9th International Conference on Mechanical and Electronics Engineering (ICMEE)
Year: 2023 | Conference Paper |
The traditional capacitive touch electrodes have the problems of low noise resistance and low resolution, and the traditional touch detection corresponds to a larger circuit area and higher power consumption. In this paper, we proposed a novel design of capacitive touch electrode pattern with the detection method. Based on the optimized of general rectangular or square touch electrode pattern, the...Show More
Theoretical Optimization of Stimulation Strategies for a Directionally Segmented Deep Brain Stimulation Electrode Array
Programming deep brain stimulation (DBS) systems currently involves a clinician manually sweeping through a range of stimulus parameter settings to identify the setting that delivers the most robust therapy for a patient. With the advent of DBS arrays with a higher number and density of electrodes, this trial and error process becomes unmanageable in a clinical setting. This study developed a comp...Show More
Automatic Optimization of Multichannel Electrode Configurations for Robust Fetal Heart Rate Detection by Blind Source Separation
Alessandra Galli;Elisabetta Peri;Chiara Rabotti;Sotir Ouzounov;Massimo Mischi
Objective. Fetal heart rate (fHR) evaluation is fundamental to guarantee timely medical intervention in case of pregnancy complications. Due to the limitations of traditional cardiotocography, multichannel electrophysiological recording was proposed as a viable alternative, which requires Blind Source Separation (BSS) techniques. Yet effective and reliable separation of the fetal ECG remains chall...Show More
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