Home » Principles of fMRI 1 » Fill in the blank BOLD fMRI takes advantage of the difference in between oxygenated and deoxygenated hemoglobin Fill in the blank BOLD fMRI takes advantage of the difference in between oxygenated and deoxygenated hemoglobin Quiz 2 >>> Fill in the blank BOLD fMRI takes advantage of the difference in between oxygenated and deoxygenated hemoglobin >>> Principles of fMRI 1 1. Question 1 Fill in the blank: BOLD fMRI takes advantage of the difference in _____ between oxygenated and deoxygenated hemoglobin. 1 / 1 point T1 T2* T2 TE —————————————————————————- 3. Question 3 What are some acquisition artifacts that you should look out for? 1 / 1 point All of these options Susceptibility artifacts/dropout Transient gradient artifacts/spikes Ghosting —————————————————————————- 6. Question 6 fMRI can capture information at the 1 / 1 point Topographical map level Functional column level Large-scale brain network level All of these options —————————————————————————- 8. Question 8 A benefit of blocked designs over event-related designs are that they: 1 / 1 point Allow for high statistical power to detect activation. Are robust to uncertainties in the shape of HRF. Both of these options Neither of these options —————————————————————————- 2. Question 2 BOLD fMRI provides a 1 / 1 point Measure of tissue metabolic activity by virtue of the regional glucose uptake Measure of the relationship between oxygenated and deoxygenated hemoglobin. None of these options Direct measure of neuronal activity —————————————————————————- 5. Question 5 Head motion-related artifacts 1 / 1 point Can be taken care of completely by realignment and motion covariates in a linear model Need to be considered seriously as a confound in many cases. Have impacts that can never really be measured Can be taken care of completely by realignment —————————————————————————- 7. Question 7 Fill in the blank: The _______ is the time between two successive stimuli. 1 / 1 point block none of these options inter-stimulus interval event —————————————————————————- 4. Question 4 Why is it typically difficult to model heart rate and respiration in a standard fMRI experiment? 1 / 1 point Because of spatial smoothing performed in the pre-processing stage of the analysis. Because the TR is typically too low and there will be problems with aliasing. Because of ‘spin history artifacts’. Because neither the heart rate nor respiration actually influences the BOLD response. Other Questions Of This Category Valid reverse inference requiresWhich field is not relevant to neuroimagingWhich of the following are common goals in the statistical analysis of fMRI dataThe goals of preprocessing are toParametric modulators are often included in the GLM analysis in order toMulti session subject experiments are useful because theyA grand GLM that includes data from a group of subjects concatenated into one model is a