Sentences with phrase «change in blood flow»

With PET scans and functional MRI, we can observe fluctuations in brain activity by measuring changes in blood flow and levels of nutrients.

Changes in blood flow pattern, such as from plaque build - up in the arteries, initiate a cascade of conflicting signals.

Each participant underwent an fMRI scan, which measures brain activity by detecting changes in blood flow within the brain.

The scans were taken using functional magnetic resonance imaging (fMRI) to measure changes in blood flow in an active brain, which suggests which regions play a role during a given task.

Brain response was gauged by functional MRI, which measures changes in blood flow as a proxy for neural activity.

Specializing in research on modafinil, Minzenberg has captured the drug in action through functional MRI (fMRI) scans, which map brain activity through changes in blood flow and oxygenation as subjects engage in particular mental processes.

By monitoring the magnetic signals of oxygen in the bloodstream, fMRI records changes in blood flow resulting from neural activity.

The results showed changes in the blood flow in areas of the brain involved in pain perception and processing sensory information from within the body (interoceptive stimuli).

Scientists already employ fMRI, which uses changes in blood flow as a proxy for brain activity, to scan the brains of restrained monkeys, but Berns wanted to train dogs to willingly enter the machine and learn simple things, such as associating a hand signal with a reward of a hot dog, all the while staying still enough to collect interpretable brain scans.

Measuring glucose metabolism in the brain by PET and scanning for changes in blood flow by fMRI, the technique produces a complete picture of brain activity.

«We believe these color patterns are due to subtle changes in blood flow or blood composition triggered by the central nervous system.

This is tricky to measure, so it is inferred from things like changes in blood flow.

Neuroimaging technologies are revealing changes in blood flow to areas of the brain, indicating more activity.

«For example, built - in cameras with dedicated software or photodiode sensors using infrared light - emitting diodes have the potential to render smartphones into functional plethysmographs [instruments that measure changes in blood flow].»

The colour of our faces depends on the concentration of melanin in the skin, but it also alters with our expressions and emotions because of changes in blood flow.

Unlike standard MRI scans that show anatomical structures in black and white, fMRI offers digitally enhanced color images of brain function, depicting localized changes in blood flow and oxygenation.

Individuals having chronic fatigue syndrome had a lot less change in blood flow to the basal ganglia between losing and winning compared to the healthy individuals.

Changes in blood flow during high - intensity exercise place strong demands on the immune system and redistribution of white blood cells.

Argawal 2000 investigated the effect of different massage oils on physical growth and on physiological changes in blood flow and vessel diameter.

While neuroplasticity is known to potentially range from synaptic plasticity to more complex changes (e.g. shrinkage in cell size, neural or glial cell genesis, spine density or even changes in blood flow or interstitial fluid [148]-RRB-, the neurophysiological basis of experience - induced neuroplasticity is still a matter of extensive research [14].

Dr. Aron and colleagues based their study's conclusions on a neuroimaging study using functional magnetic resonance imaging (fMRI) scanning that measures brain activity by detecting changes in blood flow.

Their brain activity was then compared using functional magnetic resonance imaging (fMRI), a technology that measures neural firing through changes in blood flow.

An approach called functional magnetic resonance imaging (fMRI), for example, records changes in blood flow that occur when a spark of activity passes through a particular brain region.

Studies have also shown changes in the blood flow in the brain, but none had looked at the two together, to determine whether the connection between the neck and deeper parts of the brain was causing whiplash symptoms.

This study is the first to demonstrate the importance of the heme oxygenase system in responding to changes in blood flow pattern and the possibility of using it to treat cardiovascular diseases, the researchers wrote.

This technique measures changes in blood flow to the vasculature in the brain, highlighting regions of task - related activity.

Using functional magnetic resonance imaging to measure changes in blood flow, she found that as people received more information, their brain activity increased in the dorsolateral prefrontal cortex, a region behind the forehead that is responsible for making decisions and controlling emotions.

It's caused by a change in blood flow to the area.

Or there may be a middleman — astrocytes, the nonneuronal supporting cells that surround capillaries in the brain, could secrete chemical signals to neurons in response to a change in blood flow.

Levitated mice could be a testing ground for studying the effects of space travel on humans, such as bone and muscle loss and changes in blood flow.

Arguably the most convenient and least invasive way of doing that is through functional magnetic resonance imaging, or fMRI — a technique that measures changes in blood flow and blood oxygen levels in the brain, thereby showing which parts of the brain are activated when people perform various tasks.

Professor Tofler added: «Possible reasons for why respiratory infection may trigger a heart attack include an increased tendency towards blood clotting, inflammation and toxins damaging blood vessels, and changes in blood flow.»

The researchers also measured the activity of participants» brains with a tool called near - infrared spectroscopy, which measures changes in blood flow to particular areas of the brain.

The results of the study suggest close interaction between the neck and brain, resulting in changes in blood flow.

«Using this method we are able to see a change in the blood flow as early as four weeks after treatment.

But when Donna approached Cephos of Tyngsboro, Massachusetts, for an fMRI scan, which picks up changes in blood flow and oxygenation in the brain,...

The fMRI scanner tracks the change in blood flow to the amygdala.

«CT perfusion is honing into the change in blood flow to the tumour before and after treatment,» said Ting - Yim Lee, professor at Western University's Schulich School of Medicine & Dentistry, scientist at Lawson Health Research Institute, and a medical physicist at St. Joseph's Health Care London.

Like platelets, clumps of the particles flow freely in the blood and gravitate toward blocked vessels by sensing a change in blood flow.

As in fMRI, scientists use these changes in blood flow to approximate electrical activity in neurons.

Thermal Camera looks for slight temperature fluctuations on the face due to changes in blood flow to the brain.

Used primarily in research, an fMRI uses magnetic resonance imaging technology to measure brain activity by detecting changes in the blood flow.

To study how music preferences might affect functional brain connectivity — the interactions among separate areas of the brain — Burdette and his fellow investigators used functional magnetic resonance imaging (fMRI), which depicts brain activity by detecting changes in blood flow.

Using fMRI — which pinpoints brain activity by detecting changes in blood flow and illuminating the energized area — Kumar and her colleagues study what happens in the brain when people are unable to experience pleasure.

Then the researchers measured changes in blood flow to the hypothalamus, which plays a key role in regulating hunger.

Possible reasons why a heart attack could be triggered by a respiratory infection include a greater tendency towards inflammation, blood clotting, changes in blood flow, and blood vessels damaged by toxins.

In older people blood flow does not increase following insulin or carbohydrate administration.7 Changes in blood flow are a result of signaling molecules that stimulate either vasodilation or vasoconstriction.