Sentences with phrase «electrode by electrode»

A univariate analysis made it possible to see which region of the brain was solicited during the task, electrode by electrode, contact by contact.

Not exact matches

«By charging the Smog Free Tower with a small positive current, an electrode will send positive ions into the air.

The device, developed by Dong Song, a professor of biomedical engineering at the University of Southern California, consists of electrodes implanted directly in the brain.

Embedded in the headset are 16 electrodes that press lightly on my scalp, monitoring the electrical signals generated by the 3 pounds of toothpaste - like goo sealed in my skull.

Can you design an experiment to actually confirm that you are not just a brain hooked up to electrodes by a mad scientiest who is stimulating your brain to make you believe you exist?

I do not mean to suggest that one group of brain cells mapped out by researchers and excited by electrodes will produce visions of God.

A recent report by the American Heart Association found that, in an emergency, adult electrodes can be used to defibrillate a child under the age of eight if no other alternative is available.

It works by sending comfortable, gentle pulses to the nerves through four electrode pads placed on the skin.

«Computer system transcribes words users «speak silently»: Electrodes on the face and jaw pick up otherwise undetectable neuromuscular signals triggered by internal verbalizations.»

In addition to providing high levels of protection, comfort and visibility, 3M's range of Speedglas welding shields eliminate the neck - strain caused by nod - down and increase the accuracy of electrode placement.

Firms like EnerG2 say they will further improve the technology by using new sources of carbon to coat the electrodes.

It can help improve fuel economy by encouraging more efficient fuel burning, and the trapezoid shape of the ground electrode provides improved flame reproduction.

A copper - glass seal binding the insulator and terminal post center electrode together helps protect against misfires by ensuring the full required voltage at the spark gap.

BOSTON — Conflicting results on whether brain stimulation helps or hinders memory may be explained by the electrodes» precise location: whether they're tickling white matter or gray matter.

This is achieved by decoding neuronal activity recorded with electrodes and translating it into robotic movements.

A microbial fuel cell, for example, could generate electricity by capturing electrons from the bacteria on electrodes instead of the rocks that these organisms evolved to breathe.

Electrodes monitor their position and keep them centered by applying tiny voltages to nudge them electrostatically whenever they stray.

Then, Feng recognized a novel opportunity to directly measure whether tDCS generates EFs in deep brain areas among patients with movement disorders such as Parkinson's disease, who are often treated by implanting DBS electrodes.

They did this by using electric field tomography — sequentially running small amounts of current through the electrodes in pairs and noting any voltage differences.

The new electrode grid, developed by a team of researchers at the University of California San Diego and Massachusetts General Hospital, is about a thousand times thinner — 6 micrometers versus several millimeters thick — than clinical electrode grids.

By attaching multiple electrodes to the periphery of an object or conductive coating, Zhang and his colleagues showed they could localize where and when such shunting occurs.

EEG is less invasive and less expensive than the implanted electrodes, which have previously been used to control robotic arms and computer cursors by thought alone, he says.

The PEDOT: PSS electrode grid and a standard clinical electrode grid were compared side by side.

During the chemical reaction that would power the battery, the tri-anion would make the battery conductive by moving from one of its electrodes to the other.

At Duke University Medical Center in North Carolina, researchers have surgically implanted electrodes in the brains of monkeys and trained them to move robotic arms at MIT, hundreds of miles away, just by thinking.

Like ECOG, EEG relies on brain signals picked up by an array of electrodes that are sensitive to the subtle voltage oscillations caused by the firing of groups of neurons.

«This means that one can control at will in which electrode the heat is released by simply using the proper molecule.»

By attaching a series of electrodes to the conductive materials, researchers showed they could use a well - known technique called electric field tomography to sense the position of a finger touch.

To answer these questions, a team of MUSC investigators led by stroke neurologist and physician - scientist Wayne Feng, M.D., MS, attempted something that has never before been tried — they directly measured tDCS - generated EFs in vivo using deep brain stimulation (DBS) electrodes that were already implanted in patients with Parkinson's disease.

The first team, directed by Schalk, was pursuing the more invasive ECOG approach, attaching electrodes beneath the skull.

Electrical signals between neurons generate electric fields that radiate out of brain tissue as electrical waves that can be picked up by electrodes touching a person's scalp.

The electrical signals in the muscles are sensed by electrodes on the skin.

Both of the painful procedures, but not the other stimuli, elicited an identically large response, detectable by an electrode placed at the top of the head approximately half a second later.

He notes, for instance, that the TI stimulated patches several millimeters across in the rodent's brains — far larger than the precise spots targeted by implanted electrodes.

The electrode uses a carbon fiber mat, made by the process of electrospinning shown here.

The prosthesis proposed by John Pezaris, an assistant in neuroscience at Massachusetts General Hospital (MGH) in Boston — at least as it's envisioned at this early stage — would be worn like a pair of eyeglasses, with digital cameras over a person's eyes that connect to an array of electrodes implanted in the brain.

In a separate experiment in anesthetized mice, the scientists «steered» the target area of the TI, without moving the electrodes on the animals» scalps, by altering the relative amount of current in each of the two high - frequency fields.

Standard cochlear implants function by stimulating nerves using an electrode placed inside the cochlea, a tiny spiral cavity inside the ear.

One experimental group received only cognitive training; the second group received cognitive training and exercise; and the third group received cognitive training, exercise and noninvasive brain stimulation delivered by electrodes on the scalp.

The project, headed by Mark Humayun, a professor of ophthalmology and biomedical engineering at the Keck School of Medicine of the University of Southern California, involves an implant consisting of 60 electrodes attached to the retina that conduct information from an external camera to the retina to provide a rudimentary form of sight to patients with the implants.

The electrode performance can be further enhanced by depositing a thin protective LiPON solid - state electrolyte layer on top of Li - terephthalate.

In flash memory, digital 1s and 0s of data are altered by shunting electrons in or out of an electrically isolated silicon electrode.

In this so - called «flow battery,» the electrodes are suspensions of tiny particles carried by a liquid and pumped through various compartments of the battery.

Another planned clinical trial involves a miniaturized neural electrode the size of a couple of kernels of corn, pioneered by neuroscientist Richard Andersen at Caltech.

The collaboration, led by Wen Shen and Mark Allen of the University of Pennsylvania, found that the extracellular matrix derived electrodes adapted to the mechanical properties of brain tissue and were capable of acquiring neural recordings from the brain cortex.

The two electrodes were then separated in the asymmetric supercapacitor by a solid - state electrolyte, which prevented the oxidization of the metal nitrides.

The new system, developed by neurologist Niels Birbaumer and his team at the University of Tübingen in Germany, consists of a computer screen in front of a locked - in patient and connected to electrodes that register the person's brain activity.

They create the geodesic dome - shaped carbon balls and hollow carbon tubes by shooting a current through graphite electrodes in a vacuum.

The tattoo electrodes are then applied to the skin like temporary transfer pictures and can hardly be felt by the wearer.

«Using a new layer - by - layer fabrication process, we created a microfluidic environment in which TEER - measuring electrodes are integral components of the chip architecture and are positioned as close as possible to the tissues grown in one or both of two parallel running channels,» said Olivier Henry, Ph.D., a Wyss Institute Staff Engineer who was the driving force behind the new Organ Chip designs.