FMRI Data Analysis an der Universität Oldenburg | Karteikarten & Zusammenfassungen

Lernmaterialien für fMRI data analysis an der Universität Oldenburg

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What is a false discovery rate (FDR)? 
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The probability of having at least one false positive result, given the set of reported positive results. 
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What is a pneumoencephalography?

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A contrasting method in the measurement with x-rays in which parts of the liquor are exchanged by air which leads to a better differentiation on the image between the skull and the outer brain structures.

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What is an error matrix? 
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That component of the fMRI data that is unexplained by the design matrix, when fit by the parameter matrix. 
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What is the meaning of homoscedastic? 
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Having the property that the distributions if noise are similar for all experimental conditions. 
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What is the radiological convention? 
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The practice of displaying images of the brain so that left side of the image is the right side of the brain and vice versa, as if one were facing the subject. 
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What is a glass-brain view? 
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A two-dimensional projection of fMRI data, as if the brain were made transparent and only the activations were visible. 
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What is done in a subtraction and when can it be used? 
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It is a subtraction of the BOLD signal before the stimulus from the BOLD signal after the stimulus. This analysis can only be used if both states only differ in the independent variable. 
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What is a t-test? 
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A test for statistical significance. It is based on the Student's t-distribution. It evaluates if the means of two sets of observations are different enough to not be drawn from the same distribution. 
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What is a covariates? 
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Regressors that can take any of a continuous range of values. 
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What are indicators? 
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Regressors that have integral values to indicate a qualitative level. 
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What is a random field theory? 
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A branch of mathematics that deals with the properties of smooth, spatially extended data. Using ransom field theory, researchers can better calculate the number of independent tests within fMRI analyses. 
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When has the first MRI prototype in clinical use been installed?

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1983

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Beispielhafte Karteikarten für deinen fMRI data analysis Kurs an der Universität Oldenburg - von Kommilitonen auf StudySmarter erstellt!

Q:
What is a false discovery rate (FDR)? 
A:
The probability of having at least one false positive result, given the set of reported positive results. 
Q:

What is a pneumoencephalography?

A:

A contrasting method in the measurement with x-rays in which parts of the liquor are exchanged by air which leads to a better differentiation on the image between the skull and the outer brain structures.

Q:
What is an error matrix? 
A:
That component of the fMRI data that is unexplained by the design matrix, when fit by the parameter matrix. 
Q:
What is the meaning of homoscedastic? 
A:
Having the property that the distributions if noise are similar for all experimental conditions. 
Q:
What is the radiological convention? 
A:
The practice of displaying images of the brain so that left side of the image is the right side of the brain and vice versa, as if one were facing the subject. 
Mehr Karteikarten anzeigen
Q:
What is a glass-brain view? 
A:
A two-dimensional projection of fMRI data, as if the brain were made transparent and only the activations were visible. 
Q:
What is done in a subtraction and when can it be used? 
A:
It is a subtraction of the BOLD signal before the stimulus from the BOLD signal after the stimulus. This analysis can only be used if both states only differ in the independent variable. 
Q:
What is a t-test? 
A:
A test for statistical significance. It is based on the Student's t-distribution. It evaluates if the means of two sets of observations are different enough to not be drawn from the same distribution. 
Q:
What is a covariates? 
A:
Regressors that can take any of a continuous range of values. 
Q:
What are indicators? 
A:
Regressors that have integral values to indicate a qualitative level. 
Q:
What is a random field theory? 
A:
A branch of mathematics that deals with the properties of smooth, spatially extended data. Using ransom field theory, researchers can better calculate the number of independent tests within fMRI analyses. 
Q:

When has the first MRI prototype in clinical use been installed?

A:

1983

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