Neuroinformatics Glossary
100 terms total — 24 showing — Last updated 15 Sep 2026
event-related potential
Time-locked EEG responses to specific stimuli or events, averaged across multiple trials to enhance signal-to-noise ratio.
EEG
Electroencephalography; a technique recording electrical activity of the brain through scalp electrodes.
electrocorticography
Invasive recording technique that places electrodes directly on the brain surface to measure electrical activity with hi...
event-related potential
Time-locked EEG responses to specific stimuli or events, averaged across multiple trials to enhance signal-to-noise rati...
FA
Fractional anisotropy, a scalar measure of the degree of directional water diffusion in brain tissue.
false discovery rate
Statistical correction method controlling the expected proportion of false positive findings.
field inhomogeneity
Spatial variation in the magnetic field strength across the MRI scanner bore that causes signal loss and geometric disto...
field map
An MRI acquisition measuring magnetic field inhomogeneities used to correct distortions in functional imaging.
fixel
Voxel subdivision representing a specific fiber population with unique orientation, used in advanced diffusion MRI analy...
fixel-based analysis
Method for analyzing white matter properties at the level of individual fiber populations.
FLAIR
Fluid-attenuated inversion recovery, an MRI sequence that suppresses cerebrospinal fluid signal to enhance lesion visibi...
fMRI
A neuroimaging technique that measures brain activity by detecting changes in blood flow.
FreeSurfer
A software suite for cortical surface reconstruction and subcortical volumetric segmentation from structural MRI data.
FSL
FMRIB Software Library, a comprehensive toolkit for analyzing brain imaging data.
functional connectivity
Statistical dependence between neural activity in different brain regions, measured as temporal correlation of neuroimag...
functional localizer
An fMRI scan designed to identify subject-specific brain regions responsive to particular stimuli or tasks.
GLM
Statistical framework used to analyze neuroimaging data and identify brain activation patterns.
graph theory metrics
Mathematical measures characterizing network topology and organization properties.
hemodynamic response
Changes in blood flow, volume, and oxygenation that occur in brain tissue following neural activation, forming the basis...
HRF
Mathematical model describing the relationship between neural activity and blood flow changes in fMRI.
independent component analysis
Mathematical technique for separating mixed neural signals into statistically independent components, commonly used for...
interleaved acquisition
MRI scanning technique where brain slices are acquired in alternating order rather than sequentially to minimize cross-t...
k-space
Mathematical domain representing spatial frequency data in MRI, where raw signal data is acquired before Fourier transfo...
laterality index
Quantitative measure expressing the degree of functional asymmetry between brain hemispheres, typically calculated from...
lateralization
The tendency for certain neural functions to be more dominant in one brain hemisphere than the other.