What are the advantages of fMRI?

What are the advantages of fMRI?

What are the advantages of fMRI?

The big advantage of fMRI is that it doesn’t use radiation like X-rays, computed tomography (CT) and positron emission tomography (PET) scans. If done correctly, fMRI has virtually no risks. It can evaluate brain function safely, noninvasively and effectively.

What imaging method is the most used in functional MRI?

fMRI is used in research, and to a lesser extent, in clinical work. It can complement other measures of brain physiology such as EEG and NIRS….

Functional magnetic resonance imaging
Purpose measures brain activity detecting changes due to blood flow.

What has fMRI taught us about the brain?

They have been instrumental in establishing correlations between brain and behavior. They have allowed us to examine overlapping and non-overlapping patterns of brain activation that are valuable in building up a view of shared and distinct processes among psychological tasks.

Why is poor temporal resolution bad?

Every student in psychology or neuroscience should be able to tell you that fMRI has good spatial resolution (as above), but poor temporal resolution. This is because the haemodynamic response imposes a fundamental limit on the time-precision of the measurement.

Does MRI have high temporal resolution?

In fMRI, images can be collected in a very short time; therefore, high temporal resolution is possible in principle. However, the temporal resolution is limited by a blurred intrinsic hemodynamic response and a finite signal-to-noise ratio.

What does poor temporal resolution mean?

Temporal Resolution: fMRI scans have poor temporal resolution. Temporal resolution refers to the accuracy of the scanner in relation of time: or how quickly the scanner can detect changes in brain activity. Consequently, psychologists are unable to predict with a high degree of accuracy the onset of brain activity.

What can fMRI tell us?

It may be used to examine the brain’s functional anatomy, (determine which parts of the brain are handling critical functions), evaluate the effects of stroke or other disease, or to guide brain treatment. fMRI may detect abnormalities within the brain that cannot be found with other imaging techniques.

Which method has the best temporal resolution?

EEG has an excellent temporal resolution of only a fraction of a millisecond enabling brain activity to be recorded in real-time.