FMRI BOLD

A colorful illustration of an MRI machine in a research lab, with brain scans and graphs showing BOLD signals.

Test Your fMRI Knowledge!

Are you ready to dive into the fascinating world of functional Magnetic Resonance Imaging (fMRI) and BOLD signals? This quiz will challenge your understanding of key concepts and models used in brain imaging research.

Explore critical terms like BOLD and cerebral blood models
Analyze fMRI signal peaks and their implications
Enhance your knowledge on spatial resolution and temporal dynamics

12 Questions3 MinutesCreated by AnalyzingNeuron27

When is the blood vessels on the fMRI image the darkest? When O2 content is...

100%

50%

None of the above

What is the name of the model above?

The blood volume model

The cerebral blood model

The baloon model

The venous model

What does BOLD stand for?

Blood-oxygen-level-dependent

Blood-oxygen-leveling-dependency

Brain-oxygen-leveling-dependent

Brain-oyxgen-level-dependent

Why are large vessels problematic in terms of spatial resolution?

They hide tissue we ant to look at.

They make the MR signal disappear, due to spin interference.

They cause a field inhomogenity, as dHb rushes through them.

They cause the MR signal to become steady ("maximally smooth" the signal).

Many analysis steps sacrifice ... for ... resolution.

Temporal, spatial

Functional, temporal

Temporal, functional

Spatial, functional

What happens when you decrease the TR?

The estimates of vascular changes improve, especially for very short RTs.

The estimates of vascular changes get worse, especially for very long RTs.

The estimates of vascular changes improve, as long as the RT is not too short.

The estimates of vascular changes get worse, as long as the RT is not too short.

FMRI BOLD

Test Your fMRI Knowledge!

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