Sentences with phrase «on brain surface»

1,680 strokes were documented: 1,310 ischemic strokes / cerebral infarctions (due to blockages), 79 subarachnoid hemorrhages (due to bleeding on the brain surface), 154 intracerebral hemorrhages (due to bleeding in the brain), as well as 137 unspecified strokes.

Microelectrodes in a clear silicon array rest on the brain surface.

«Recording a thought's fleeting trip through the brain: Electrodes on brain surface provide best view yet of prefrontal cortex coordinating response to stimuli.»

MRIs of eight living chimps reveal substantial variability in the shape and location of certain features on the brain surface.

Not exact matches

In Trebek's case, a clot formed on the surface of the brain.

Groove patterns on the surface of modern chimpanzee brains throw a monkey wrench into proposals that some ancient southern African hominids evolved humanlike brain characteristics, a new study suggests.

Still, researchers have spent decades debating the implications of partially preserved brain surface features on hominid endocasts.

Identification of in vivo sulci on the external surface of eight adult chimpanzee brains: implications for interpreting early hominin endocasts.

Mushrooms that contain the brain - altering compound psilocybin vary widely in terms of their biological lineage and, on the surface, don't appear to have a whole lot in common, he said.

Brain drain One set of images focused on gray matter at the brain's wrinkled surface, or cortex, where processing of speech, memory, motor control, emotion, sensory and other information ocBrain drain One set of images focused on gray matter at the brain's wrinkled surface, or cortex, where processing of speech, memory, motor control, emotion, sensory and other information ocbrain's wrinkled surface, or cortex, where processing of speech, memory, motor control, emotion, sensory and other information occurs.

Inside the brain, prions presumably latch onto PrPC molecules on the surface of nerve cells and impose the prion conformation.

The device is an improved version of a clinical tool called an electrode grid, which is a plastic or silicone - based grid of electrodes that is placed directly on the surface of the brain during surgery to monitor the activity of large groups of neurons.

Further study revealed that these so - called immune proteins are actually present on the surface of certain nerve cells, but that they functioned differently in the brain than they did in the rest of the body; rather than scouting for germs, they influenced signals sent between neurons.

The mice, which move backwards when they try to walk forwards on a smooth surface, have a gene for a mutated protein that prompts neurons in the cerebellum, a brain area that controls movement and balance, to die off.

This technique provides a measure of blood oxygen concentration in surface blood vessels, indicative of activity in the brain's outer layers, using a set of wearable probes in a cap that is placed on the head.

A close analysis of the brain scans revealed vastly different neural circuitry behind problems that seem similar on the surface.

He was listening to a young researcher expound on the virtues of extracting signals from the surface of the brain.

The scientists observed that transmission of chemical signals between the nerve cells are facilitated by AMPA - receptors and the activity occurs on the brain cell surface.

But unlike other brain implants, which either sit on the scalp or have to be jabbed into brain tissue, this one sits on the surface of the brain.

In 1816, an Italian anatomist reported finding lymphatic vessels on the surface of the brain, but for two centuries, it was forgotten.

If this line of reasoning is correct, then there are physical processes taking place on some distant surface that, much as a puppeteer pulls strings, are fully linked to the processes taking place in my fingers, arms, and brain as I type these words at my desk.

Previous research had shown that nicotine seems to have conflicting effects on different types of nicotinic acetylcholine receptors, proteins on the surface of brain cells that respond to nicotine and the naturally occurring neurotransmitter acetylcholine.

The neural probes are placed directly on the surface of the brain, so safety is of paramount importance for the development of graphene - based neural implant devices.

To pinpoint where dNPF was acting in the brain, the researchers turned to dNPF receptors, or the proteins on the surface of neurons to which the peptide specifically binds.

Indeed, by examining brain tissue and slices from the cocaine - addicted rats at various stages of withdrawal and craving, Wolf and her colleagues discovered that the incubation period and the subsequent spike in craving appeared to correlate with the appearance of atypical AMPA receptors on the surface of neurons in the NAc, which could help explain cocaine craving.

Stolk plans future studies with Knight using fine - tuned brain mapping on the actual surfaces of the brains of volunteers, so - called electrocorticography.

In a bid to determine the regions of the brain concerned with these memorization difficulties, the researchers conducted magneto - encephalographs (a technique that allows very weak magnetic fields produced by neural activity to be measured at the surface of the head) on a group of amusics while they were performing a musical task.

Specifically, the study relied on data collected at NYU ECoG, a center where brain activity is recorded directly from patients implanted with specialized electrodes placed directly inside and on the surface of the brain while the patients are performing sensory and cognitive tasks.

Images of the tumor cells are immediately created on an LCD screen observed as the surgeon scans the instrument across the tumor or brain surface.

Recent neuroimaging findings have notably suggested the existence of abnormal cortical folding (the formation of convolutions on the surface of the brain).

Of those who venture into the skull, about half restrict themselves to repairing blood - vessel damage on the brain's surface.

Her e-Dura implant is designed specifically for implantation on the surface of the brain or spinal cord.

Spontaneous SAH is an abnormality within the brain's arteries that weaken and leads to ruptures in the blood vessels on the surface of the brain, causing bleeding between the membranes surrounding the brain.

They put a battery on top of the head of each subject, sending a small current through the surface of the brain toward a group of neurons in the primary motor cortex.

Think of brain cells as rooms with locks called receptors on their surfaces and a hypocretin as a key that is also a stimulant.

When zebrafish with the green fluorescing endothelial gene matured, the researchers observed green FGPs on the surface of the fish's brains — confirming that these cells arose from endothelial tissue.

In the current study, the researchers showed that FGPs are present on the surface of the zebrafish brain and that these blood vessel - associated FGPs do not arise from the immune system, as had been previously thought, but from endothelial cells themselves.

Although their function is not completely understood, a special population of cells covering the blood vessels on the brain's surface is thought to contribute to the organ's protection.

The impulses cause glutamate (one of the brain's main neurotransmitters) to pop out of one nerve cell and travel across the synapse to activate the next by binding to its receptors, chemically active signaling stations on the cell surface.

Given the complexity and scale of the interfaces required, Shepard and his team believe that the degree of noninvasiveness required for human use within this aggressive time frame can only be achieved with electrode architectures based on stimulation and recording at the brain surface.

The study, funded by the charity Brain Tumour Research and conducted by researchers at their UK Centre of Excellence at the University of Portsmouth, examined the factors present on the surface of NSCLC cells.

The UW team tested electrodes on the surface of the brain, underneath the skull.

On the surface, the brains of insects and mammals look nothing alike.

The scans, performed on 113 babies born at between 22 and 29 weeks, show that the more premature a baby, the slower it develops nooks and crannies in the cortex, the outer surface of the brain vital for the most advanced mental capabilities.

Researchers investigating the toxicity of particles designed to ferry drugs inside the body have found that carriers with a positive charge on their surface appear to cause damage if they reach the brain.

The cortex is the thin layer of cells on the surface of the brain that governs many functions, and in elephants it contains a greater variety of cell types (such as the extensively branched neuron pictured above) than is found in more frequently studied animals such as rodents and primates.

On the surface of our numerous star - shaped brain cells called astrocytes, they have found the molecule LRP4 is important in ensuring healthy levels of a brain chemical that enables learning and memory, said Dr. Lin Mei, chairman of the Department of Neuroscience and Regenerative Medicine at the Medical College of Georgia at Augusta University and Georgia Research Alliance Eminent Scholar in Neuroscience.

Mind controls: Electrodes sitting on the brain's surface Epidural cortical stimulation is a halfway house: you do get a hole in your head, but no wires in the brain, and it has helped severely depressed people

Scientists have long wondered whether the brains of geniuses (especially the shapes on their surfaces) could hold clues about their owners» outsized intelligences.

In order to identify the part of their brains responsible for seizures, the patients underwent 1 to 4 weeks of observation through electrocorticography (ECoG), a technique that provides precise neural recordings via electrodes placed directly on the surface of the brain.