Sentences with phrase «different electrodes»

Right now we can record from about 100 different electrodes at a time, which is enough to get a sense of what one part of one brain area is doing, but not to study a circuit as a whole.

By comparing performance of cells on paper with those fabricated on glass and plastic films with different electrodes, we identify avenues that can help guide future research for improved performance.

A fuel cell converts chemical energy into electricity by reacting hydrogen and oxygen at two different electrodes.

When measuring electric potential difference within muscles using EMG, there are different electrode types available, different normalization options, and a range of possible data processing methods to choose from.

Not exact matches

What makes it different is electromyography: electrodes that measure the electrical signals from your forearm muscles to tell, for instance, whether you're making a fist, pointing a finger or giving a thumbs - up.

Feng's team cleverly took advantage of a 15 -20-minute window during the second surgical procedure, before the surgeon connected the battery to the electrodes, to connect the electrodes to a recording device while applying the direct current through the scalp at different current levels using two different montages (pad placements).

Unlike traditional supercapacitors, which use the same material for both electrodes, the anode and cathode in an asymmetric supercapacitor are made up of different materials.

Electrodes of different sizes and arrangements could also be produced using the printer and individually adapted to the respective body part on which the measurement is to be carried out.

They inserted 100 electrodes into the brains of two healthy monkeys to record the neural activity linked to different hand and arm muscle activity.

The finding suggests that brain surgeons and the designers of neural prosthetics have a much smaller margin of error than previously thought — shifting an electrode even slightly could activate an entirely different set of neurons.

We have a short time period, and so we do about a billion experiments at a time, where we can genetically engineer our viruses to express different random peptide sequences and we can, you know, [in] about a one microliter sample we can introduce about a billion different viruses to a semiconductor wafer or an electrode and have them see if they can actually molecularly imprint it or try to do a chemical and physical map to it so that they can actually then have a template to grow that material.

But in a paper posted online today in Nature Nanotechnology, the MIT team, led by materials scientist Yang Shao - Horn, took a very different approach: using carbon nanotubes to replace the oxide - based positive electrode.

A second electrode and a different catalyst will be needed to combine those electrons with the hydrogen ion to make hydrogen gas.

The team placed electrodes at different locations along the octopuses» arms to measure neural activity.

In TDCS, electrical current flows continuously between electrodes placed on different parts of the scalp, activating neurons in one area and quieting them in another.

Commercial versions typically employ an array of electrodes, each of which channels electrical signals corresponding to a different pitch toward the auditory nerve.

Developing a mathematical model of a multilayered polymer cantilever coated with metal electrodes, the researchers systematically calculated how different material parameters affected the energy output.

In order to see what happened inside the brain during acquisition, 16 electrode pairs were inserted in the hippocampus and in different areas of the entorhinal cortex.

But that the EEG signals, electro - encephalography by electrodes placed on the skull, show different signals, was not demonstrated yet.

An international team led by researchers from the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) used advanced techniques in electron microscopy to show how the ratio of materials that make up a lithium - ion battery electrode affects its structure at the atomic level, and how the surface is very different from the rest of the material.

So they conducted experiments in which the same subjects were asked to subvocalize the same series of words four times, with an array of 16 electrodes at different facial locations each time.

When the researchers poked tiny electrodes into the shrimps» eyes and directed circularly polarized light onto them, they found that the same cells responded in different ways, at times recognizing the properties of circularly polarized light.

The theory also suggested that using electrodes made from different types of metals would create an inverse magnetocapacitance effect, one in which anti-parallel spins create more capacitance than parallel spins.

«We have found the acoustic field distribution is quite different for the embedded and conventional electrode structures,» said Jinying Zhang, one of the paper's authors.

The electrodes apply a voltage that ramps from high to low, so the electrons will arrive at different times and land at different vertical positions.

The developed analysis method was applied to various single - molecule junctions, i.e., those of 1,4 - butanediamine (DAB), pyrazine (PY), 4,4» - bipyridine (BPY), and fullerene (C60), sandwiched by gold electrodes, and the different molecular - dependent electronic and structural fluctuations were demonstrated.

Having outfitted the twelve participants with electrode caps, the researchers used a measure of the brain's electrical activity known as event - related brain potentials (ERPs) to monitor their physiological responses to different outcomes.

Using an onboard source of energy (such as a battery, ultracapacitor, solar panel or any combination thereof), the electrodes will send an electrical current into the plasma, causing the plasma to push against the neutral (noncharged) air surrounding the craft, theoretically generating enough force for liftoff and movement in different directions (depending on where on the craft's surface you direct the electrical current).

But it is tricky to use electrodes to simultaneously record the activity of many different neuron types at once to study how their activity is synchronized.

Domenic explained about alpha, beta and theta waves — different low - frequency voltage oscillations that the brain produces — while Lindsay soaked three electrodes in electrolyte solution.

In their present study, the researchers exposed different battery electrodes to twenty - five charging and discharging cycles each, at three different rates and measured the elementary distribution of the electrode components.

Unfortunately, he says, the fMRIs failed to reveal the inhibitory circuitry involved; to try to get to the bottom of that, he plans to repeat the study using electroencephalography (EEG), which involves placing many electrodes on a skintight rubber cap placed over a subject's head that allows researchers to observe communication between different parts of the brain.

Scientists charged these batteries with different levels of current for various periods of time, took them apart and used a brilliant X-ray beam to see how the charge was distributed among billions of nanoparticles in the positive electrode.

They had placed a single graphene layer on silicon, connected electrodes to it and measured the amount of charge it carried when they applied different voltages.

«We were able to look at thousands of electrode nanoparticles at a time and get snapshots of them at different stages during charging and discharging,» said Stanford graduate student Yiyang Li, lead author of the report.

To observe brains on the brink of death, Borjigin and her colleagues implanted electrodes into the brains of nine rats to measure electrical activity at six different locations.

Electrodes implanted deep in the brains of epileptic patients have detected single neurons dedicated to the recognition of a particular person in different situations and guises.

Certain electrodes, however, produced a dramatically different result from the colors and memories that Blackwell typically experienced.

While preparing them for brain surgery, Penfield stimulated different brain regions with electrodes and asked the patients to describe any sensations that resulted.

If the researchers can use multiple diamond tips in different shapes and further control the process, «one can envision forming a predesigned ribbon network ready to serve as electrodes in a specific circuitry of a future device,» he says.

In addition, high frequency stimulation delivered via macroelectrodes has been shown to inhibit nearby neuronal somata, while also providing excitation to axonal projections, indicating that small changes in electrode location could lead to substantially different results (Herrington et al., 2016).

To perform spin - sensitive measurements, the researchers create electrodes that are magnetized in different orientations.

Furthermore, ultra-thin, self - assembled layers on substrates of different surface energies were investigated on their morphology and ion conductive structure for modeling polymer structure in fuel cell electrodes.

Scientists in the consortium will be studying different materials that could be used for a lithium - metal battery's positive electrode, while working to prevent unwanted chemical reactions that could impair the battery's performance.

Current results show the Li distribution after different degrees of cycling, thereby providing information critical to the design of electrodes.

«BRAIN: The World Inside Your Head» uses a variety of interactive components to explain complex functions of the brain — lean on electrodes and perform tasks to see real - time EEG measurements and simulated imaging of corresponding brain activity; look through a microscope to view real neurons from different species; and use a mirror and peephole to see how the brain attends to movement first, a sign of the survival instinct.

Ivanovskaya said she and the team tested four different modifications of the electrode array before settling on the right one.

The researchers are now working on scaling up the number of electrodes so they can record from multiple neurons at a time, potentially allowing them to determine how different parts of the brain are connected.

When the chip's electrodes apply an oscillating electric field, the positive and negative charges inside the nanoparticles reorient themselves at a different speed than the charges in the surrounding plasma.

The American Council on Exercise (ACE) recently conducted a study which measured muscle activity during different ab exercises, using electrodes to measure muscle contraction during 16 exercises, including the traditional crunch.