Question 1

What is the Meaning of rs-fMRI?

Accepted Answer

The abbreviation for resting-state functional Magnetic Resonance Imaging, a non-invasive neuroimaging technique used to assess intrinsic functional connectivity in the brain. It measures spontaneous, low-frequency fluctuations in the blood-oxygen-level-dependent (BOLD) signal while a subject is at rest, providing insight into the brain's baseline network organization. This tool is vital for mapping the functional human connectome.

Question 2

What is the Origin of rs-fMRI?

Accepted Answer

The term is a technical acronym developed within the field of neuroradiology and cognitive neuroscience, with 'rs' denoting resting state and 'fMRI' being the established method of functional magnetic resonance imaging. It emerged from the realization that brain activity is highly organized even in the absence of a task.

Question 3

What is the Mechanism of rs-fMRI?

Accepted Answer

The technique relies on the principle that functionally related brain regions exhibit correlated low-frequency oscillations in their BOLD signal, even when the subject is not performing a specific task. These correlations reflect underlying patterns of synchronized neuronal activity and communication between brain networks. Analyzing these resting-state networks provides critical information on brain health, neuroplasticity, and the impact of hormonal or metabolic factors on global brain function.

rs-fMRI

Meaning

Origin

Mechanism

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