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: