Alexandre Sayal @AlexandreSayal

, 5 tweets, 3 min read Read on Twitter

@practiCalfMRI

@practiCalfMRI

I am performing some tests with multiband EPI sequences. Why are the beta values of the GLM higher for the sequences with lower TR? @practiCalfMRI @fmrwhy @fMRI_today @fMRIstats

#fmri #multiband #magneticresonanceimaging #glm

I have performed some tests with simulated data at different sampling rates and it does not seem to affect the GLM results

Just a quick follow-up: I simulated four BOLD signals at four different sampling rates.

And the GLM stats look as expected: the t-values increase with the increase of the number of samples, and the beta values are steady.

Still not sure why in the data the betas vary. Will perform some more tests and see if the effect remains!

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