fMRI: Functional Magnetic Resonance Imaging |
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Functional MRI (fMRI) is a magnetic resonance imaging (MRI)-based neuroimaging technique which allows us to detect the brain areas which are involved in a task, a process or an emotion. Functional MRI sequenceEcho planar imaging (EPI), a fast magnetic resonance imaging (MRI) technique, is used to sequentially acquire brain images every few seconds (TR = 2000 ms - 4000 ms) during several minutes. fMRI Paradigm
BOLD effectThe detection of brain areas which are used during a condition is based on the Blood Oxygenation Level Dependent (BOLD) effect. Read more about BOLD effect... fMRI analysisUnfortunately, this signal change is very low and cannot be directly detected. Therefore, advanced statistical methods (Statistical Parametric Mapping: SPM) must be used to identify the activated voxels. Read more about fMRI analysis...Thresholded functional MRI activation maps can be overlaid in color on a high resolution anatomical MR image. Clinical fMRI: Clinical applications of functional MRI
Read more about Clinical fMRI: Clinical applications of functional MRI Research applications of functional MRI
Synonyms: functional MRI, functional magnetic resonance imaging, fMRI, functional imaging, brain mapping Journals: Neuroimage, Human Brain Mapping Description in other Languages:
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During the fMRI image acquisitions, the patient is asked to alternatively perform several tasks or is stimulated to trigger several processes or emotions. Each of these conditions is repeated several times and can be separated by rest periods.The combination of these conditions is called a 







