Parametric modulators are often included in the GLM analysis in order to
Quiz 3 >>> Parametric modulators are often included in the GLM analysis in order to >>> Principles of fMRI 1
7.
Question 7
Parametric modulators are often included in the GLM analysis in order to:
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Correct for normalization errors.
Allow for flexible HRF shapes.
Allow for trial-specific variation in the amplitude of the response.
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10.
Question 10
Consider the case where c is a contrast matrix. In order to test whether the contrast cTβ is significantly different from 0 in the GLM framework we typically use the following test:
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Fisher’s exact test
F-test
Chi-square test
T-test
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8.
Question 8
Which of the following are standard methods for estimating variance components in the GLM?
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Method of moments
Restricted maximum likelihood
Maximum likelihood
All of these options
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11.
Question 11
In the “massive univariate approach” one typically:
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Constructs a separate model for each voxel of the brain.
Does not use a model.
Models all of the voxels in the brain jointly.
Only studies data consisting of more than 1,000 time points.
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9.
Question 9
9. Consider the case where c is a contrast vector. In order to test whether the contrast cTβ is significantly different from 0 in the GLM framework we typically use the following test: