fMRI
Pronunciation: eff-em-ar-eye
Also written as: fMRI — functional magnetic resonance imaging
A neuroimaging technique that measures brain activity by detecting changes in blood flow.
Full Definition
Functional magnetic resonance imaging (fMRI) is a non-invasive neuroimaging technique that measures brain activity by detecting changes in blood oxygenation and flow. It provides real-time visualization of neural activity patterns and is extensively used in neuroinformatics research to map brain function. The technique relies on the blood-oxygen-level-dependent (BOLD) signal to infer neural activity. fMRI data generates large datasets that require specialized computational analysis tools and statistical methods for interpretation.
Usage
Usage note: Always lowercase 'f' when spelled out as 'functional MRI' but uppercase when abbreviated.
In Context
- "The fMRI study protocol must specify the temporal resolution and acquisition parameters." — Research protocol document
- "Participants underwent fMRI scanning while performing the working memory task." — Clinical study report