Sentences with phrase «changes in blood flow to the brain»

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

Not exact matches

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.

In previous studies, the UCLA researchers had seen differences in heart rate and blood brain flow during blood pressure changes in men and women with obstructive sleep apnea and wanted to see if cardiovascular responses in brain areas were different in healthy men and womeIn previous studies, the UCLA researchers had seen differences in heart rate and blood brain flow during blood pressure changes in men and women with obstructive sleep apnea and wanted to see if cardiovascular responses in brain areas were different in healthy men and womein heart rate and blood brain flow during blood pressure changes in men and women with obstructive sleep apnea and wanted to see if cardiovascular responses in brain areas were different in healthy men and womein men and women with obstructive sleep apnea and wanted to see if cardiovascular responses in brain areas were different in healthy men and womein brain areas were different in healthy men and womein healthy men and women.

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.

It measures blood flow to the brain by sending light signals from sensors mounted in a 3 - pound headcap, then producing images of blood oxygen changes — representing brain activity — by recording the absorption of light at different colors.

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.

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.

The new research also gives insight into the mechanisms underlying the use of functional magnetic resonance imaging to detect blood flow changes in the brain.

He used functional magnetic resonance imaging (fMRI), a means of measuring brain activity by detecting blood flow changes inside the brain, to measure differences in the strengths of communications between brain regions.

The fast fMRI was able to detect the subtle and very rapid oscillations in cerebral blood flow in the brain's visual cortex as the volunteers observed the changing pattern.

At roughly 100 minutes after each treatment, the team began testing brain activity in participants at rest with their eyes closed, first using a form of functional magnetic resonance imaging (fMRI) called arterial spin labeling to follow blood flow changes in the brain.

NIRSIT is a device based on the near - infrared spectroscopy principle, which (a) utilizes light to detect hemodynamic changes in the cerebral blood flow and (b) visualizes brain activation regions in the prefrontal area of the brain in real time.

I am proposing a demanding criterion: that you be able to detect abnormalities in patients beforehand by such brain - imaging techniques as functional MRI [which measures blood flow in the brain], and then use imaging to see whether or not there is a change in those markers for the disease as the therapy progresses.

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

Spence and colleagues use functional Magnetic Resonance Imaging (fMRI) technology to determine whether someone is fibbing by tracing blood flow to certain areas of the brain, which indicates changes in neuronal activity at the synapses (gaps between the neurons).

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 an optical fiber implanted in that region, the researchers were able to stimulate the primary motor cortex near where the stroke had occurred, and then monitor biochemical changes and blood flow there as well as in other brain areas with which this region was in communication.

Additional skepticism arises from knowing that fMRI measures blood - flow change, not neuronal activity, that the colors are artificially added in order to see the blood - flow differences and that those images are not any one person's brain but are instead a statistical compilation of many subjects» brains in the experiment.

The fMRI scan does this by detecting indirect changes in the brain's blood flow in response to changes in electrical signalling during the stimulus.

It works by detecting the changes in blood oxygenation and flow that occur in response to neural activity — when a brain area is more active it consumes more oxygen and to meet this increased demand blood flow increases to the active area.

Another seminal study led to the discovery that blood flow and glucose utilisation change more than oxygen consumption in the active brain (Science, 1988) causing tissue oxygen to vary with brain activity.

In mice, the drug minoxidil changes blood vessel structure, reducing vessel stiffness and increasing blood flow to the brain.

Scientists can compare the same brain area when a person is doing nothing, and again when the person is performing a task, to see how blood flow — and activity — in that brain area changes.

The effects of neck - lock include: «helps to bring an internal focus for the practitioner «sealing the energy that is created in the upper brain stem area «stabilizes blood pressure that can change due to exercise and breathing «acts as a safety valve, regulating the pressure and reducing dizziness «creates nerve reflexes that balance / stimulate the thyroid and parathyroid glands «allows the flow of energy to remain natural and calming to the heart «Moon center energy is contained in the chin «increases the concentration of secretions from the pituitary gland «allows a new interrelatedness between the glands How do you know?

* Cerebrovascular Accident (Stroke, CVA, Transient Ischemic Attack, TIA): A disruption of blood flow to the brain resulting in neurologic changes, either permanent (CVA) or temporary (TIA).