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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.
Basic functional near infrared spectroscopy (fNIRS) abbreviations BFi = blood flow index CBF = cerebral blood flow CBV = cerebral blood volume CMRO 2 = metabolic rate of oxygen CW= continuous wave DCS = diffuse correlation spectroscopy FD = frequency-domain Hb, HbR= deoxygenated hemoglobin HbO, HbO 2 = oxygenated hemoglobin
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.
acronym = an abbreviation pronounced as if it were a word, e.g., SARS = severe acute respiratory syndrome, pronounced to rhyme with cars initialism = an abbreviation pronounced wholly or partly using the names of its constituent letters, e.g., CD = compact disc , pronounced cee dee
This is a list of mnemonics used in medicine and medical science, categorized and alphabetized. A mnemonic is any technique that assists the human memory with information retention or retrieval by making abstract or impersonal information more accessible and meaningful, and therefore easier to remember; many of them are acronyms or initialisms which reduce a lengthy set of terms to a single ...
Psychophysiological interaction (PPI) is a brain connectivity analysis method for functional brain imaging data, mainly functional magnetic resonance imaging (fMRI). It estimates context-dependent changes in effective connectivity (coupling) between brain regions.
Neurons do not have internal reserves of energy in the form of sugar and oxygen, so their firing causes a need for more energy to be brought in quickly.Through a process called the haemodynamic response, blood releases oxygen to active neurons at a greater rate than to inactive neurons.
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.