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fMRI measures the flow of oxygenated blood or the blood oxygenated level dependent (BOLD) effect. When a brain region is being used, the neurons in that region require increased oxygen for all of the necessary metabolic, chemical and electrical processes occurring within and between them. Oxygen will be carried through the blood to those regions that are most active. Importantly, oxygenated and deoxygenated blood have different magnetic qualities. A functional magnetic resonance imaging (fMRI) machine, with its own magnetic properties, can make the molecules in oxygenated blood move in a certain way, which in turn is essentially captured by a camera. fMRI is typically used in neuroscience experiments in which individuals do some task like view words or images. The goal is to identify regions which show a BOLD effect to a particular task or stimulus.
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How do you measure for screws on a tape measure?
well, if you want to measure the length, just stretch the tape and measure it. If you want to measure the diameter, measure the circumference of the screw, then divided by 3.1415, then you will get the diameter.
How do you measure a cabinte?
You take a tape measure and you measure it length and height and that is all you do.
What are the broken measure and the complete measure?
broken measure is an incomplete and the complete maesure is complete
What is the purpose of the tape measure?
it measure length
How do you measure for tiling?
to measure tiling with a mesuring tape
Which part of the brain is responsible for mental activity?
The cerebrum is responsible for mental activity.
How does an fMRI know if someone is lying?
Neither fMRI machines nor people interpreting data from fMRI machines can tell if an individual is lying. fMRI machines can show regions that are activated by certain tasks; however, fMRI machines do not provide causation, only correlation (e.g. task Y doesn't necessarily require brain region X). Since a single brain region can be involved in multiple tasks, it would be nearly impossible to say with any certainty "X region is the region for lying" and to conclude that activation in this region suggests that an individual is lying.
What is the full form of FMRI?
Federal Monetary Residence Improvement
Functional Magnetic Resonance Imaging captures what?
fMRI measures the amount of oxygenated blood over time. Deoxygenated and oxygenated blood have different magnetic properties which an fMRI scanner can detect.
What does FMRI stand for in scientific terms?
In scientific terms, the acronym "FMRI" stands for "Functional Magnetic Resonance Imaging". It is used to scan a patient's body (specifically the brain) by using magnetic waves.
What is the difference between a brain scan and an brain MRI?
1.The MRI and fMRI differ from each other in a way that the MRI views the anatomical structure while the fMRI views the metabolic function. 2.An MRI studies the water molecule's hydrogen nuclei whereas an fMRI calculates the levels of oxygen. 3.An MRI's structural imaging views at a high resolution the differences between tissue types with respect to space. On the other hand, an fMRI's functional imaging views the tissue differences with respect to time. 4.The MRI has a high, spatial resolution while an fMRI has a long-distance, superior, temporal resolution. 5.When talking about its technological advancements, the fMRI is still starting to build up its name unlike the MRI wherein it is already at its peak as one of the widely used equipment technologies in the medical world. 6.The fMRI is yet to be introduced for diagnostic purposes and is only used in experiments unlike the revolutionary MRI. 7.The fMRI is considered to be more expensive than the MRI because of the additional software and hardware required fo
What can be combined with an FMRI to study how the brain responds to stimulation?
Using Virtual Reality.
How do you measure how much a headache hurts?
The standard way to measure how much a headache hurts is to ask the one with the headache, "on a scale of 1 to 10, how much does it hurt?". Unfortunately, this is completely subjective. Currently we have no way of knowing whether a different person experiencing exactly the same amount of pain would then give the same numerical rating. Normally, we settle for mere descriptions, rather than measurements. Headaches can be described as mild, serious, agonizing, or disabling. If the headache causes vomiting as a side effect, it is extremely bad. If you had to scientifically measure the severity of a headache, you could try looking at pictures of related brain activity by means of a functional MRI. However, as of 2010 no one on earth can tell the difference between a "headache fMRI picture" and a "no headache fMRI picture", much less distinguish between various levels of pain. Perhaps someday someone will have looked at enough fMRI pictures to know what to look for and be able to tell the difference.
What has the author Gregory Krolczyk written?
Gregory Krolczyk has written: 'Assessment of cerebral vascular reactivity evaluation by bold fMRI'
What does fMRi actually help to explain?
fMRI helps to explain what the brain does and which brain regions are involved in what types of processes. While fMRI and other imaging methods cannot tell us whether a region is definitely involved in a specific process (patients with lesions and the use of transmagnetic stimulation are the only techniques so far which can suggest causation), it can still help us understand what functions are carried out by which regions. Knowing which regions engage in which processes aids in understanding variations between individuals as well as complementing data from patient studies.
Which two procedures allow researchers to visualize changes in brain activity over time?
the two procedures are the PET scan and the fMRI
Which of the following brain imaging techniques produce the most detailed picture of brain structure?
Functional Magnetic Resonance Imaging (fMRI)
