Arrays electrodes time frequency signal processing computer assisted. Medical search. Frequent questions

This was cumbersome, and, in the 1980s, MEG manufacturers began to arrange multiple sensors into arrays to cover a larger area of the head. (wikipedia.org)
[7] Present-day MEG arrays are set in a helmet-shaped vacuum flask that typically contain 300 sensors, covering most of the head. (wikipedia.org)
Using the laptops and cellphones in today's world is solved by using modern prosthetic devices that connect signals from the brain via surface-mounted sensors and detectors. (medicaldesignbriefs.com)
The surface-mounted electromyographic sensors with isolated microwiring receive analog signals sent from the brain to be captured and converted to digital signals. (medicaldesignbriefs.com)
Getting a reliable and useful signal from the sensors that drive the machine instruments requires several steps. (medicaldesignbriefs.com)
27]. Leahy S., Lai Y., (2016) A cantilever biosensor exploiting electrokinetic capture to detect Escherichia coli in real time, Sensors & Actuators: B. Chemical, 238 pp. 292-297. (queensu.ca)
Although we know the increasing importance of data processing techniques, our focus was on analyzing the implementation of sensors and biomedical applications. (encyclopedia.pub)
Some of the main tools for limiting losses in supply and distribution networks are leakage sensors that enable real-time monitoring. (bvsalud.org)

The objective of this work is to investigate effect of various processes of Shielded Metal Arc Welding (SMAW) on angular distortion in low carbon steel weld joints. (ukm.my)

We have established a freely-moving rhesus monkey model employing technology that transmits neural activity from an intracortical array using a head-mounted device and records behavior through computer vision using markerless motion capture. (stanford.edu)
Thus, we show how measuring brain activity can deliver insights into how notifications are processed, at a finer granularity than can be afforded by behavior alone. (researchgate.net)

The purpose of this study is to examine the spatial frequency spectrum of epicardial activation time sequences computed by common activation detection algorithms, determine which algorithm is least noisy, and derive the recording site density necessary to avoid distortion of the epicardial activation map. (duke.edu)
Surface-style electrodes easily form a reliable electrochemical state between the detection surface and the skin of the body so that current can flow into the electrodes. (medicaldesignbriefs.com)
To this end, neurological signal detection electrodes are being tested in a number of formats. (medicaldesignbriefs.com)
A tubular micro rotary stepping actuator, custom-designed with a ferrofluid levitation mechanism, is integrated with a Raman probe, for the first time, to scan a probing laser beam sideways for angle-resolved Raman excitation and signal collection, towards enabling the detection of lesion-induced biochemical changes in vivo and in real-time. (ubc.ca)

In vitro resonant frequency responses of integrated devices with applied pressure are measured in the range of 50 - 200 ppm/mmHg.Device characterization reveals reader-device communication range, sensor performance variation, and stent mechanical reliability as areas of concern. (ubc.ca)

The adaptive lens is based on the use of piezoelectric actuators and, without any obstruction or electrodes in the clear aperture, can guarantee a fast response time, less than ~10ms. (spie.org)

Due to the cortical plasticity of the brain, signals from implanted prostheses can, after adaptation, be handled by the brain like natural sensor or effector channels. (wikipedia.org)
Thus, this kind of self-powered sensor may generate a stable signal response without any external energy input. (nature.com)
The recently introduced Multi-actuator Adaptive Lens (MAL) can be used in closed loop with a wavefront sensor to correct for time-variant wavefront aberrations. (spie.org)
When the brain directs muscle activity, the EMG sensor pads detect minute analog electrical signals that result within the muscular system. (medicaldesignbriefs.com)
Two to three sensor pads are carefully placed externally on the arm at that point determined to exhibit strong muscular signal activity. (medicaldesignbriefs.com)
Sensor placement must be near the tendon bulge entering the muscle to collect best signals. (medicaldesignbriefs.com)
Because sensor design and signal collection remains the key element in the challenge, skin preparation is critical, specifically in the area of the sensor. (medicaldesignbriefs.com)
The sensor prototype circuit is implemented in a 180-nm standard CMOS process and achieves resolution of 710 aF while consuming 12.7 pJ energy every cycle of 13.78 kHz output frequency. (sigda.org)

High resonance frequency AFM scanners, operation far away from noises! (horiba.com)
The surface resonance frequencies confirm the predictions made by the model as well as the wavefront measurements. (spie.org)

A brain-computer interface (BCI), sometimes called a brain-machine interface (BMI) or smartbrain, is a direct communication pathway between the brain's electrical activity and an external device, most commonly a computer or robotic limb. (wikipedia.org)
During walking, participants received unexpected forward pushes with different timing and magnitude at the pelvis level, while being supported (Exo-Assistance) or not (Exo-NoAssistance) by the robotic assistance provided by the controller. (biomedcentral.com)
Although these robotic devices are reliable in assisting individuals' locomotion, researchers still struggle to design smart controllers for exoskeletons that also support balance when needed. (biomedcentral.com)

My research interest lies in the area of wearable computer design and signal processing. (tamu.edu)

Computer Physics Communications 201 (Feb. 2016). (octave.org)
19th International Conference on Medical Image Computing and Computer-Assisted Intervention (MICCAI) 2016 Oct 17, Athens, Greece. (octave.org)

Specialized wire and cable designs are required to protect and isolate the minute digital signals of the EMGs from power wiring the motors. (medicaldesignbriefs.com)
They allow monitoring parameters such as temperature, positioning, and electrical bio-signals as electrocardiograms (ECGs), electromyograms (EMGs), and electroencephalograms (EEGs). (encyclopedia.pub)

and (3) Analysis of center of mass COM kinematics (relative maximum COM Motion, Recovery Time and Margin of Stability) and spatio-temporal parameters (Step Length and Swing Time). (biomedcentral.com)
In some cases, a variable resistor is employed to act as a digital potentiometer to help control signal gain stability, as signals sometimes bounce up and down during excited use. (medicaldesignbriefs.com)

The piece makes use of EEG and analog signal processing hardware (filters, amplifiers, and a mixing board) to stimulate acoustic percussion instruments. (wikipedia.org)
One needs to ensure good data acquisition and clean signal transfer to the amplifiers. (medicaldesignbriefs.com)

Four performance evaluation tests (laden mass, forward speed, pull and haulage tests and a computer-based simulation of stress/strain analysis) were carried out. (ukm.my)

[1] [2] Applications of MEG include basic research into perceptual and cognitive brain processes, localizing regions affected by pathology before surgical removal, determining the function of various parts of the brain, and neurofeedback . (wikipedia.org)

Such electronics can continuously monitor physiological signals or provide therapy without the need for external power devices and bulky wires. (nature.com)

The endocardial electrode spacing is unknown, but is expected to be at least as dense. (duke.edu)
Large global mapping systems or regionally dense arrays may offer advantages during catheter ablations for ventricular tachycardia and for studies into the mechanisms of ventricular tachycardia by accurately defining the cardiac activation pattern. (duke.edu)
Dennards invention of 1T DRAM was one of the most important developments in the launch of modern computer industry, setting the stage for development stgategico increasingly dense and cost-effective memory for computers and other digital devices. (qrforex.com)
APPROACH: Here we describe the optimization of the fabrication process of a bio-functionalized 3D high-resolution 1mm circular subretinal implant composed of SU-8 polymer integrated with dense gold microelectrodes (23µm pitch) passivated with 3D micro-well-like structures (20µm diameter, 3µm resolution). (bvsalud.org)

In analog signals, some continuously variable aspect of the electrical current represents the information. (britannica.com)
Electronic devices that manipulate digital and analog signals today are predominantly semiconductors . (britannica.com)

His thesis title was "Real-Time Characterisation of Dynamic Laser Fields" . (blogspot.com)
This thesis indicates that micro actuator-assisted endoscopic Raman spectroscopy is a promising technology for luminal tissue analysis. (ubc.ca)
List of Research Topics and Ideas of Computer-Aided Design (CAD) for MS and Ph.D. Thesis. (t4tutorials.com)

The proposed neuron pruning scheme has been implemented using 65 nm CMOS process. (journaltocs.ac.uk)

She collaborated with Prof. Krishna Shenoy on neural signal processing and neural prosthetic systems. (stanford.edu)
Depending upon each circumstance, options for directing prosthetic movements include using body-power, using electric assisted power, and for simpler applications, using passive or pneumatic devices. (medicaldesignbriefs.com)
For a number of years, industry has focused on deep electromyography (EMG) for collecting muscular signaling from areas inside the forearm for use with the prosthetic hand. (medicaldesignbriefs.com)
The cleaned signals are then rectified to offer a digital signal that exhibits definable shifts in voltage in typical range of 5-12 V. In some cases, an amplifier is used to set the signal levels and gain to optimize wiring impedance and drive mechanisms in the prosthetic unit. (medicaldesignbriefs.com)
By design, most prosthetic motor/driver systems operate and provide more precision in responding to low-level digital stepping signal technology. (medicaldesignbriefs.com)
The complexity of this human-to-machine interface increases significantly the need increases to drive process controls for multiple degrees-of-freedom in the prosthetic device. (medicaldesignbriefs.com)

Preprint arXiv:1108.3206v2 Modeling and frequency domain analysis of nonlinear compliant joints for a passive dynamic swimmer ! (octave.org)

Taguchi method with L9 orthogonal array is utilized to analysed contribution for each parameter. (ukm.my)
The proposed technique involves projecting patterns derived from binary masks corresponding to orthogonal functions onto the target to elicit a photoacoustic signal. (bvsalud.org)

In this research, a low power consumption material reserver device will be created in which time information is incorporated into the computational process, using the chemical dynamics in the material as a computational resource. (go.jp)

Later, Cohen built a much better shielded room at MIT, and used one of the first SQUID detectors, just developed by James E. Zimmerman , a researcher at Ford Motor Company, [5] to again measure MEG signals. (wikipedia.org)
The essential problem of biomagnetism is, thus, the weakness of the signal relative to the sensitivity of the detectors, and to the competing environmental noise. (wikipedia.org)

A spacecraft can only accelerate as long as it has fuel to burn or a planet to loop around for a gravitational assist. (scienceandnonduality.com)
It wouldn't accelerate quickly, but it could accelerate for a long time, gradually gaining in velocity until it was whipping its way across the galaxy. (scienceandnonduality.com)

At the same time, they feature sensitivity equivalent to that of SQUIDs. (wikipedia.org)

The MAL can guarantee a level of correction and a response time similar to the ones obtained with deformable mirrors. (spie.org)

Welding process is joining method which is extensively utilized in shipbuilding and automotive industry. (ukm.my)
A new laser-based method for lateral processing of optical fibers is presented, which can be used for controlled material removal. (sciencebridge.de)
This method allows the non-hazardous fiber component fabrication without etching and mechanical processing. (sciencebridge.de)
The ADSYNX technology provides a fast and adaptive method for the synchronization of different signals (skew compensation) for any electrical or optical system up to the GHz regime. (sciencebridge.de)

Here we present a cooperative ankle-exoskeleton control strategy to assist in balance recovery after unexpected disturbances during walking, which is inspired on human balance responses. (biomedcentral.com)
Because the vortex allows the osmotic shock in the order of sub-millisecond, we can induce and observe high-speed dynamic responses of transports such as volume, response time and repeatability. (go.jp)

Thus, this project aims at developing a technology to perform computer-controlled electrolysis on the melted filament of a 3D printer. (go.jp)
This compact and cost-effective technology facilitates a real-time, simultaneous measurement of plasma voltage and plasma current with a combined device in the high-voltage circuit of a cold atmospheric plasma. (sciencebridge.de)
The process technology overcomes the use of toxic phenol and formaldehyde, while the resulting adhesive exhibits good physicochemical and mechanical properties. (sciencebridge.de)

With the popularization of Industry 4.0, similarly, the Health 4.0 concept seeks to facilitate the progressive virtualization of individuals, medical devices, and processes for customized online health based on cloud computing [ 11 ] [ 12 ] . (encyclopedia.pub)

In previous studies, the proposed hand rehabilitation assist device can support finger flexion/extension only. (go.jp)
In this research, we aim to develop a hand rehabilitation assist device that can actively support finger flexion/extension, adduction/abduction. (go.jp)

Her research activities in the first 10 years focused on low-power circuit and system design, video signal processing, and wireless communications. (stanford.edu)
Nanoscale chiral structures offer an approach to modulating optical signals with relatively small variations in input power," said Sean Rodrigues, a Ph.D. candidate who led the research in the laboratory of Associate Professor Wenshan Cai in Georgia Tech's School of Electrical and Computer Engineering. (nanowerk.com)
While that is comparatively low power for a laser system, it has a high enough energy flux (energy transfer in time) to instigate change. (nanowerk.com)
The data-processing system consists of an electrode interface, a signal conditioning unit, and a power source designed into a small sealed device. (medicaldesignbriefs.com)
Those signals are filtered at both the high and low frequencies to remove electrical noise and to isolate the signals from potential power supply interference. (medicaldesignbriefs.com)
An onboard nuclear reactor could supply it with electric power for decades, long enough for an array of MEGA drives to reach velocities approaching the speed of light. (scienceandnonduality.com)
It seems the Montauk chair was developed to take a single mind and increase its amplitude to the point where that one mind had enough power (without the requisite discipline required to do this on its own) to pilot a craft, find a place in the space time continuum, communicate telepathically and or open a portal in time. (jimmychurchradio.com)

A phase shifter with temperature compensation for 28GHz phased-array TRX is presented. (sigda.org)
A signal filter and an efficient procedure are presented, which enable the online filtering of interferences with known frequencies with a minor or rather no phase loss and accordingly without signal delay. (sciencebridge.de)

The voltage applied between the emitter and collector is fixed and relatively high, while the voltage between the emitter and the base is low and variable-it is the incoming signal. (britannica.com)

The stack of crystals, which store tiny amounts of energy, vibrates tens of thousands of times per second when zapped with electric current. (scienceandnonduality.com)

Arrays of SQUIDs (superconducting quantum interference devices) are currently the most common magnetometer, while the SERF (spin exchange relaxation-free) magnetometer is being investigated for future machines. (wikipedia.org)
It is especially concerned with their use in electronic devices, in which electricity is used to control, communicate, and process information. (britannica.com)
Most electronic devices use digital signals. (britannica.com)
The functions that such circuits perform are generally of two broad types: logic circuits transform or process information carried by electronic signals, while memory circuits and devices store the information. (britannica.com)
The fabrication process of 3D polymer-metal devices with high resolution and a high aspect-ratio (AR) is very complex and faces many challenges that impair its functionality. (bvsalud.org)

In this investigation, the novel intelligent sensory evaluation technologies including the physical property testing apparatus, computer vision system, color card, and electronic tongue (E-tongue) were employed for characterization of CQAs of HLG and its placebo. (hindawi.com)
SSRMS first assisted at the P6 worksite for the battery R&R, then moved the ICC pallet with the old batteries to the POA (Payload ORU Accommodation) on the MSS MT (Mobile Service System Mobil Transporter) and released it in that Translate/Stow location. (nasa.gov)
Funded by a grant from a NASA program that also supports research on far-out concepts such as inflatable telescopes and exoplanet photography , the duo has been developing what they call a Mach-effect gravitational assist (MEGA) drive, a propulsion system designed to produce thrust without propellant. (scienceandnonduality.com)
In addition, there are ample military uses for such a system, such as controlling entry into secure or sensitive areas and the verification of parts, such as computer chips, purchased by the government. (nsf.gov)
CPS contemplates the integration of a virtual universe with physical processes, which are feasible through embedded system monitoring and control of physical processes. (encyclopedia.pub)
The system exhibits a good time resolution and enables a live plasma self-regulation. (sciencebridge.de)

Since the millimeter/THz signal is down-converted from the optic domain, the proposed technique is flexible to generate the required frequency bands based on actual demands. (go.jp)

The research, supported by the National Science Foundation and the Air Force Research Laboratory, was reported February 27 in the journal Nature Communications ( 'Intensity-dependent modulation of optically active signals in a chiral metamaterial' ). (nanowerk.com)
Myographic chips monitor and measure the force produced by muscles as they move from relaxed mode to contractions and can deliver intensity and muscle signal speed. (medicaldesignbriefs.com)

A review pointed out that Vidal's 1973 paper stated the "BCI challenge" of controlling external objects using EEG signals, and especially use of Contingent Negative Variation (CNV) potential as a challenge for BCI control. (wikipedia.org)
It was a noninvasive EEG (actually Visual Evoked Potentials (VEP)) control of a cursor-like graphical object on a computer screen. (wikipedia.org)
and (4) industrial process control. (nsf.gov)

4] Finally, if there is time I will discuss our most recent work on realization of MZM in a platform based on chiral quantum spin Hall edge states [5]. (mrs.org)

After returning to Stanford in 2000 to continue her teaching and research, Prof. Meng turned her research interest to applying signal processing and IC design to bio-medical engineering. (stanford.edu)

Monitoring and analysis of bioelectrical signals and movements can aid diagnosis, prevention, and examination of a wide range of issues. (encyclopedia.pub)

MEG signals were first measured by University of Illinois physicist David Cohen in 1968, [4] before the availability of the SQUID , using a copper induction coil as the detector. (wikipedia.org)
Fearn, a physicist at California State University, Fullerton, bided his time by singing along to the a cappella covers pumping through his stereo. (scienceandnonduality.com)

The research, built on basic concepts in optical physics, involves innovative ways to address problems in security, credit cards, identification cards, protection of computer chips, etc. (nsf.gov)

The technologies could have applications in such areas as data processing, sensing and communications. (nanowerk.com)

The MEG (and EEG) signals derive from the net effect of ionic currents flowing in the dendrites of neurons during synaptic transmission. (wikipedia.org)
Traditional Chinese medicine (TCM) compound formulations have gradually been the investigation of hot spots at the same time due to that TCM was characterized by safety and the comprehensive effect and as a complementary treatment to Western medicine [ 2 ]. (hindawi.com)

A manufacturing process for steel components with a predominantly bainitic structure is proposed, which avoids the conventionally required long production times and enables large-scale production. (sciencebridge.de)

Implementations of BCIs range from non-invasive (EEG, MEG, MRI) and partially invasive (ECoG and endovascular) to invasive (microelectrode array), based on how close electrodes get to brain tissue. (wikipedia.org)
Vidal's 1973 paper marks the first appearance of the expression brain-computer interface in scientific literature. (wikipedia.org)
The history of brain-computer interfaces (BCIs) starts with Hans Berger's discovery of the electrical activity of the human brain and the development of electroencephalography (EEG). (wikipedia.org)

1982). 21, No. Computer experiments offer complimentary means to acquire essential information that may be quite difficult or impossible to obtain empirically. (binary-options-guide.com)

Recently, studies in human-computer interaction via the application of machine learning to statistical temporal features extracted from the frontal lobe (EEG brainwave) data has had high levels of success in classifying mental states (Relaxed, Neutral, Concentrating), mental emotional states (Negative, Neutral, Positive), and thalamocortical dysrhythmia. (wikipedia.org)
The resulting signal is then recorded using a high-speed camera and analyzed using correlation analysis of the speckle motion. (bvsalud.org)

Activation times for bipolar electrograms were estimated using Peak, Fastest Zero Crossing, and Morphological algorithms. (duke.edu)

The transistor thus acts as a signal amplifier. (britannica.com)

The review of previous and recent approaches shows that CMSs are more cost-effective and accessible than other railway inspection methods, as they can be carried out on in-service vehicles an unlimited number of times without disruption to normal train traffic. (ukm.my)

The vertical nanowires are laterally arrayed in various patterns on the surface. (lu.se)

The electric current also produces the EEG signal. (wikipedia.org)
The basis of electronics is the electronic signal, an electric current that represents information. (britannica.com)

There are two basic types of electrical signals: analog and digital. (britannica.com)
In contrast, digital signals use standardized pulses to represent numbers. (britannica.com)
With a digital audio signal, the amplitude of the signal for a set amount of time is converted to a number represented by, for example, 16 pulses of fixed duration and amplitude. (britannica.com)

The researchers believe that may be the strongest nonlinear optical rotation ever reported for a chiral metamaterial, and is about a hundred thousand times larger than the current record measurement for this type of structure. (nanowerk.com)

Chemicals and Drugs1

Analytical, Diagnostic and Therapeutic Techniques and Equipment13

Psychiatry and Psychology2

Phenomena and Processes8

Disciplines and Occupations1

Technology, Industry, Agriculture1

Information Science11

Sensors8

Shielded Metal A1

Behavior2

Detection4

Resonant1

Piezoelectric1

Sensor8

Resonance2

Robotic3

Wearable1

20162

EMGs2

Stability2

Amplifiers2

Simulation1

Cognitive1

Physiological1

Dense4

Analog signals2

Thesis3

CMOS1

Prosthetic6

Modeling1

Orthogonal2

Computational1

Detectors2

Accelerate2

Sensitivity1

Deformable1

Method4

Responses2

Technology3

Computing1

Rehabilitation2

Power7

Phase2

Voltage1

Energy1

Devices5

System6

Generate1

Intensity2

Control3

Quantum1

Teaching1

Movements1

Physicist2

Research1

Areas1

Effect2

Manufacturing1

Brain3

Offer1

High2

Peak1

Amplifier1

Approaches1

Surface1

Electric2

Digital3

Measurement1