Sentences with phrase «when blood flow to the brain»
Stroke occurs when blood flow to the brain is interrupted by a blockage or a rupture in an artery, depriving brain tissue of oxygen.
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Stroke occurs when blood flow to the brain is disrupted.
Although there are two types of strokes, each result when blood flow to the brain is cut off and the brain cells are deprived of oxygen and begin to die.
Not exact matches
When you eat too much, you decrease the blood flow to your brain as it's preoccupied with your digestive system.
This disease occurs when blood flow to a region of the brain is interrupted by either a clot or bleeding, depriving the body of oxygen and nutrients.
While they don't have definite answers, besides having good genes, Kawas said, the answer is probably a combination of being resilient to Alzheimer's Disease and also that they did not develop other dementia - causing conditions, such as microscopic infarctions that occur when blood flow is blocked from certain regions of the brain and hippocampal sclerosis, which causes neuron loss.
«Just like the human brain, heart and kidneys — organs that can commandeer heightened blood flow when needed — the placenta may employ an auto - regulatory mechanism to optimize perfusion,» adds Limperopoulos, director of Children's Developing Brain Research Laboratory and the study's senior aubrain, heart and kidneys — organs that can commandeer heightened blood flow when needed — the placenta may employ an auto - regulatory mechanism to optimize perfusion,» adds Limperopoulos, director of Children's Developing Brain Research Laboratory and the study's senior auBrain Research Laboratory and the study's senior author.
When warned their breathing was about to be restricted, the most resilient participants — SEALs and adventure racers, among others — showed a burst of blood - flow activity in an area of the brain that registers sensations in the body, called the insular cortex.
Using imaging technologies, they have observed that when neurons start to fire there is an accompanying increase in blood flow to area of the brain that is active.
It has been observed that blood flow in the brains of people with the disorder is impaired when compared to healthy brains.
«Our brains require a tremendous amount of energy and in order to meet this demand the flow of blood must be precisely choreographed to ensure that oxygen is being delivered where it is needed and when it is needed,» said Maiken Nedergaard, M.D., D.M.Sc., co-director of the University of Rochester Center for Translational Neuromedicine and lead author of the study.
«Rapid blood pressure drops in middle age linked to dementia in old age: Temporary episodes of dizziness or light - headedness when standing could reduce blood flow to the brain with lasting impacts.»
«When other portions of the brain circuit related to speech were also affected according to our blood flow measurements, we saw more severe stuttering in both children and adults,» said first author Jay Desai, MD, a clinical neurologist at CHLA.
An ischemic stroke occurs when a clot cuts off blood flow to part of the brain, depriving those cells of oxygen and nutrients like the blood sugar glucose that they need to survive.
About seven of every eight strokes are ischemic: They occur when a blood clot cuts off oxygen flow to one or another part of the brain, destroying tissue and leaving weakness, paralysis and sensory, cognitive and speech deficits in its wake.
«We believe exertion or increasing blood flow to the brain when it's not quite ready to handle that, even in the absence of more impacts to the brain, could also interfere with recovery in this window,» said Asken, also a clinical and research coordinator for the Sports Concussion Center at the UF Student Health Care Center.
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.
When the human body senses a threat, be it real or perceived, our physiology shifts to a defensive mode orchestrated by the brain — the immune system and appetite ramp down, metabolism is altered to liberate fuels, and blood flow is redirected to deliver these fuels to muscles that need them.
By using PET to monitor blood flow and metabolism, Raichle and his collaborators have shown how the brain responds when a subject is asked to perform tasks as diverse as memorizing words or anticipating an unpleasant experience.
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.
Vascular dementia, on the other hand, appears to occur when blood flow to certain areas of the brain is interrupted, such as during strokes and so - called mini-strokes.
It's the period when the arousal mechanism in the limbic brain connects with our bodies, causing blood flow to our erogenous zones and making us want sex.
When you work out in the heat, your body shuttles more blood to the skin in order to help heat escape — meaning less blood flows to the muscles and brain, causing fatigue to set in faster.
«When you're dehydrated your blood pressure drops, heart rate increases, blood flow to the brain slows — all of which can make you tired,» says Luga Podesta, MD, sports medicine specialist at Kerlan - Jobe Orthopaedic Clinic in Los Angeles, Calif..
Stroke What it is: Most strokes occur when a blood clot blocks an artery or a blood vessel, interrupting blood flow to an area of the brain over a period of minutes or hours, causing brain cells to die.
Most strokes — about 85 % — occur when a clot or some other obstruction blocks blood flow to (or within) the brain; these are known as ischemic strokes.
When a muscle is stressed, there's an increase in blood flow to the region being exercised, stimulating more responsive nerve connections between the brain and muscle,» says personal trainer and owner of Fully Loaded Fitness, Ethan Hyde.
«When [the arteries] are bent out of shape, that can restrict the blood flow to the brain.
Oral steroids can increase the level of the low - density lipoprotein or LDL and also decreases the level of high - density lipoprotein or HDL which means it increases the risk of atherosclerosis — a condition where fatty substances block the blood flow in the arteries that can also lead to heart attacks and stroke when it reaches the brain.
When the blood pressure drops, blood flow to the brain reduces.
When the flow of oxygen - rich blood to the brain is hindered, brain cells die and the brain degenerates.
When your feet and heart are held up above your head for an extended period of time, a flow of blood rushes to the brain.
When energy is increased in the body as a result of thermogenesis, the brain is better able to utilize this excess energy resulting from increased blood flow.
When your arteries and blood vessels stiffen, the amount of blood traveling through them can decrease, which limits the blood flow to your heart, brain, kidneys, eyes and other organs.
When you restrict blood flow to the brain, you get premature aging, lousy memory and brain fog.
Magnesium also protects the brain from harmful neurotoxins, which are free to flow through the blood stream, when estrogen levels drop.
«An infrared session is like doing a light jog, so of course when you're doing a light jog your heart rate's going to be going, and it's actually extremely healthy for you, because you're getting that fresh pump of blood through the body — ultimately, the more your blood is flowing, the more increased circulation to the brain,» she said.
When these feelings occur, breathing and heart rate levels are rapid and unsteady, which disturbs the blood flow and oxygen to the brain, causing dizziness during menopause.
When you hang upside down, oxygen - rich blood flows to your brain.
Sometimes when the condition becomes serious, it can get fatal as the blood flowing to the brain becomes limited.
A stroke occurs when a blood clot blocks an artery or blood vessel in the brain or when a blood vessel breaks thereby interrupting the blood flow to an area of the brain.
A stroke occurs when a blood clot blocks the steady flow of blood to your brain.
When we are anxious, blood flows away from our brains, so this technique will bring the oxygen back to your head and help you to think clearly.