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Functional magnetic resonance imaging or functional MRI (fMRI) measures brain activity by detecting changes associated with blood flow. [1] [2] This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in use, blood flow to that region also increases. [3]
Functional magnetic resonance spectroscopy of the brain (fMRS) uses magnetic resonance imaging (MRI) to study brain metabolism during brain activation. The data generated by fMRS usually shows spectra of resonances, instead of a brain image, as with MRI. The area under peaks in the spectrum represents relative concentrations of metabolites.
One particular method used in recent research is resting-state functional magnetic resonance imaging, rs-fMRI. In a 'reformulation' of the binary-risk vulnerability model, researchers have suggested a multiple-hit hypothesis that utilizes several risk factors — some bestowing a greater probability than others — to identify at-risk ...
Functional magnetic resonance imaging adaptation (FMRIa) is a method of functional magnetic resonance imaging that reads the brain changes occurring in response to long exposure to evocative stimulus. [1] If Stimulus 1 (S 1) excites a certain neuronal population, repeated exposure to S 1 will result in subsequently attenuated responses.
Functional magnetic resonance imaging data. Functional neuroimaging is the use of neuroimaging technology to measure an aspect of brain function, often with a view to understanding the relationship between activity in certain brain areas and specific mental functions.
Download as PDF; Printable version; In other projects ... fMRI lie detection is a field of lie detection using functional magnetic resonance imaging (fMRI).
Resting state fMRI (rs-fMRI or R-fMRI), also referred to as task-independent fMRI or task-free fMRI, is a method of functional magnetic resonance imaging (fMRI) that is used in brain mapping to evaluate regional interactions that occur in a resting or task-negative state, when an explicit task is not being performed.
Event-related functional magnetic resonance imaging (efMRI) is a technique used in magnetic resonance imaging of medical patients. EfMRI is used to detect changes in the BOLD ( blood oxygen level dependent ) hemodynamic response to neural activity in response to certain events.