University of Florida surgeons use mapping software to plan the insertion
of an electrode into a patient's brain.
Not exact matches
Colorado - based Cochlear's processors gather sound from the environment, turning it
into an electrical signal and send it to an
electrode implanted in the ears
of people with hearing loss.
Scientists at the University
of Wisconsin and UCLA conducted the study, which implanted
electrodes deep
into the craniums
of epilepsy patients to monitor their brain activity during seizures.
If one then asks the machine to make us happy, the computer might then simply implant
electrodes into the pleasure centers
of our brains.
Traumatic birthing experiences, like the use
of drugs to induce labor and numb pain, internal
electrode probes screwed onto baby's scalp, forceps, C - section, immediate cord clamping, suctioning, rough handling, bright lights, separation from mom and being left alone in a nursery incubator etc., can be hard - wired
into a deep memory base that you, as a now functioning adult, can't even remember, let alone access!
Inserting
electrodes into the brains
of two macaques, Tsao worked out which aspects
of a face were mapped onto each neuron.
While the actual filling process takes only a few seconds, battery manufacturers often wait several hours to ensure the liquid is fully absorbed
into the pores
of the
electrode stack.
«The moment I first dropped an
electrode into a slice
of brain and heard all these neurons firing away like a thunderstorm, I was hooked,» Miller recalls.
These were subsequently fed
into a part
of the paw
of an anesthetized rat, and then, with the help
of electrodes in the brain and advanced analytical techniques, the researchers were able to measure the reactions in the neuronal networks.
Many neuroscientists had long believed that the only way to extract data from the brain specific enough to control an external device was to penetrate the cortex and sink
electrodes into the gray matter, where the
electrodes could record the firing
of individual neurons.
Michelle McComb
of Florida Atlantic University in Boca Raton and colleagues implanted
electrodes into the eyes
of three species
of hammerhead — the winghead, the bonnethead and the scalloped hammerhead — and two other shark species to measure their field
of vision.
The key ingredient that makes the batteries rechargeable is a molecule called bismuth oxide which, when mixed
into the batteries» zinc
electrodes, prolongs the life
of devices and allows them to recharge.
When the laser pulse has ionized the air, a current begins to pass between the
electrodes and, as a result, the physicists are able to assess the appearance
of the plasma clusters formed under the influence
of the light that has formed
into filaments.
When neuroscientists put
electrodes into the periaqueductal gray region
of rat brains and stimulated the neurons there, the creatures immediately started to run and jump uncontrollably.
Data from
electrodes implanted
into their brains showed that neurons in the impaired rats fired less often in the presence
of odors.
To do so, researchers will need to find non-invasive ways to record the firing
of individual neurons, because all current methods involve opening the skull and, often, sticking
electrodes into brain tissue.
They inserted 100
electrodes into the brains
of two healthy monkeys to record the neural activity linked to different hand and arm muscle activity.
Symptoms such as movement restrictions, muscle rigidity, or tremor can be alleviated using the neurosurgical procedure which places small
electrodes into deep structures
of the brain.
The group inserted
electrodes into the brains
of six people who had been diagnosed with Alzheimer's at least a year earlier.
In a new study by Flesher et al., microelectrode arrays were implanted
into the primary somatosensory cortex
of a person with spinal cord injury and, by delivering current through the
electrodes, generated sensations
of touch that were perceived as coming from his own paralyzed hand.
Unlike the
electrodes used in lithium - ion batteries, these organic compounds don't rely on intercalation — the process
of continuously integrating ions
into their molecular matrix, which slows down as the temperature drops.
Many
of us are familiar with electrolytic splitting
of water from their school days: if you hold two
electrodes into an aqueous electrolyte and apply a sufficient voltage, gas bubbles
of hydrogen and oxygen are formed.
Usually, in small - molecule junctions, electrons «pushed» through the junction by the applied bias make the leap continuously, from one
electrode into the other, so that the number
of electrons on the molecule at each instant
of time is not well - defined.
There, they lived in a three - room enclosure and researchers inserted small
electrodes into their muscles to study the evolution
of bipedal walking.
Finally, they wired up their pillars
into alternating rows
of anodes and cathodes, submerged their forest with a lithium - containing electrolyte, and showed that it provided 78 % more power than a microbattery made with thin - film carbon
electrodes, they reported here 13 February at the annual AAAS meeting.
With nowhere else to go, the charge on the
electrode eventually conducts
into the air around it as bolts
of electricity.
But what individual neurons are doing in the areas that light up on an fMR image is an open question, because researchers can't stick
electrodes into the brains
of healthy people.
One strategy has been to try to transform the
electrodes from flat sheets
into a forest - like array
of carbon pillars, which are then wired together in long alternating rows to serve as negative and positive
electrodes.
As a first test, the researchers implanted
electrodes into the brains
of females to identify the circuitry activated when they naturally formed a pair bond and mated.
They dunk a positively charged graphite
electrode into the salt and pass an electrical voltage between the
electrode and the side
of the crucible.
The device consists
of two parts, an implant and a prosthesis, the first part requires surgery in which a titanium piece is placed
into the bone and a control system that connect
electrodes to the muscles and nerves is installed.
They rode stationary bicycles wearing lung monitors, they slept with
electrodes on their skulls, and they plunged their arms
into a cooler
of ice water and (each twin out
of hearing
of the other) reported on the level
of the pain.
Achieving high areal capacity is critical for packing a lot
of battery
electrodes together
into a battery case.
First - principles calculations determined that the electron barrier, established at the interface
of the PEI / hexagonal boron - nitride structure and the metal
electrodes applied to the structure to deliver, current is significantly higher than typical metal
electrode - dielectric polymer contacts, making it more difficult for charges from the
electrode to be injected
into the film.
The treatment involves
electrodes surgically inserted
into specific areas
of the brain.
The
electrode will be dipped
into samples
of DNA prepared from the blood to be tested.
In order to evenly apply the film to the arched door trim, the researchers divide it
into small modules and then glue them to the door trim in sections: «Slight creases arise at the curvatures, which change the spacing
of the
electrodes.
Soon a permanently embedded grid
of electrodes will identify those patterns and simultaneously send them to an external processer that will convert the brain signals
into synthesized words.
Electrodes are surgically implanted
into or on top
of target nerve fibres, ready to sense electrical signals from neural activity or to deliver electric current that mimics the language
of the nervous system.
They swell and shrink, gather
into a cluster and touch each other, shrinking in unison, causing collapse and subsequent cracks that can harm performance, leading to destruction
of the
electrode and thus lower lifetime.
The nanogenerator relies on an
electrode integrated
into a segment
of the tire.
T: It's very difficult, but you can insert
electrodes into a part
of the central brain called the mushroom body, and you find EEG - like activity, which changes a bit when the fly goes from waking to sleeping.
To localize the source
of his seizure and identify which nearby tissue could be surgically removed without major loss
of function, Parvizi's team implanted so - called subdural intracranial
electrodes into Blackwell's brain that would not only monitor neuronal activity but could also apply electric current and so stimulate the adjacent part
of the brain.
To triangulate the location
of the focus, neurosurgeons insert
electrodes into the brain to monitor electrical activity that occurs during a seizure.
Duchenne could only put
electrodes on the skin
of his subjects; Waller and her colleagues today can insert fine needles
into the muscles themselves.
In the laboratory, it was a relatively simple step for Lovley to dupe the enterprising microbes
into passing their electron booty to an even more attractive mineral — an
electrode made
of unpolished graphite.
Batteries are handy because their electrons flow through an
electrode (that nub at the top
of a dry - cell battery) and from there are easily channeled
into MP3 players, flashlights, toys, smoke detectors, and so on.
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.
In an initial procedure, Dr. Elisevich surgically implanted
electrodes into her brain to initiate the monitoring
of seizures with a continuous inpatient video electroencephalographic (vEEG).
Later, the flies» hearing was tested by playing a series
of song pulses at a naturalistic volume, and measuring the physiological response by inserting tiny
electrodes into their antennae.