Question

Hi. This is a question for my summer neuroscience class. Q: How does fMRI create images...

Hi. This is a question for my summer neuroscience class.

Q: How does fMRI create images of neuronal activity? How does neuronal activity cause changes in blood flow?

Science   Anatomy-And-Physiology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Functional magnetic resonance imaging ( fMRI) measures brain activity by detecting changes associated with blood flow. It depends upon the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in use, blood supply to that area also increases.

The blood oxygen level dependent signal (BOLD), detected in fMRI Reflects changes in deoxyhemoglobin driven by localized changes in brain blood flow and blood oxygenation, which are coupled to underlying neuronal activity by a process known as neurovascular coupling.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Hi. This is a question for my summer neuroscience class. Q: Explain the relevant differences in...
Hi. This is a question for my summer neuroscience class. Q: Explain the relevant differences in inductive and deductive approaches to studying language and brain.
[Oral part] Hi. This is a question for my summer neuroscience class. Q: Why is the...
[Oral part] Hi. This is a question for my summer neuroscience class. Q: Why is the paradigmatic axis so important to understanding how language(s) are structured and provide insight into neurological mappings?
Hi. This is a question for my summer neuroscience class. Q: Why must a neuroscientist studying...
Hi. This is a question for my summer neuroscience class. Q: Why must a neuroscientist studying language and brain understand phonemes and phonology?
Hi, my question is about scale of measurement. This is from my Market Research class but...
Hi, my question is about scale of measurement. This is from my Market Research class but it is also a statistics topic so pls help; a) What is your marital status ?: single-engaged-married-divorced-widowed ____________________ b) My school grades were: very good - good - sufficient - not good - very bad ______________ c) I am with the Zara brand: very satisfied-satisfied- neither satisfied nor dissatisfied, unsatisfied-very dissatisfied ____________________ d) In which month were you born ?: January-February, ..., December) ____________________...
Hi, my question is, how are definite integrals and antiderivatives directly related? an example would be...
Hi, my question is, how are definite integrals and antiderivatives directly related? an example would be appreciated
hi , i have a question that im confusing about NMR, so if i discover my...
hi , i have a question that im confusing about NMR, so if i discover my substance along the line of CxHyOz then how do i know whether it is (CxHyOz)1 or (CxHyOz)2~x ? I have a lab about NMR and IR, can anyone give me a techinque to analyze the chart ? Cause it looks so ugly. ( just some guidance, i want to do it myself first )
What is my research equation if my research question is: How does oil dependency impact a...
What is my research equation if my research question is: How does oil dependency impact a countrys economy? my focus is on the dangerousness of being oil dependent. We seen the price of oil at an all time low and how this makes countries who are dependent vulnerable within their economys.
Q # 7: What is a mixed stimulant-psychedelic drug and how does it differ from LSD?...
Q # 7: What is a mixed stimulant-psychedelic drug and how does it differ from LSD? Compare and contrast the symptoms of an entactogen and an empathogen, Q # 8: Describe the effects of MDMA metabolism and the length of psychedelic drug effects on an individual. Q # 9: How can MDMA alter serotonin and dopamine neurotransmission? What kinds of changes happen to the brain as a result of MDMA use? Q # 10: Explain how recreational use of MDMA,...
For a project in my microbiology class, I was asked to come up with a scientific...
For a project in my microbiology class, I was asked to come up with a scientific question about GP187 (Singulisphaera) and the gene for MoxR proteins. I came up with the following: "I discovered that MoxR is the key regulator of the protein methanol dehydrogenase, which is important in the utilization of methane and methanol. How does the addition of methanol to the MoxR protein gene affect the function of the gene and the production of methanol dehydrogenase in GP187...
Q: How does the cash flow volatility of a company influences the amount of debt a...
Q: How does the cash flow volatility of a company influences the amount of debt a company can manage successfully? Discuss this relationship. What other factors that could influence a company taking on additional financial leverage? I have attempted to answer it as follows, is my answer accurate? A: Higher cash flow volatility leads to periods in which the firm has insufficient cash flow to manage its debts. Firms with high cash flow volatility (i) use less debt, (ii) are...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT