Assignment I 心理所 U76121034 蘇子航
I. Assignment goal
Figure out the level of correlation between two different fMRI data pre-processing order ( RA: stands for
slice-time correction first, then motion correction; AR: the opposite of RA). And the bigger issue: Which
one should we execute?
In addition, I took subject 15 as the target to complete this assignment.
II. Procedure
a. Preparation: Choose a single voxel (32,32,20) and draw the time series plot using the time as the y-
axis, and value as the x-axis. As the graph below shows, we are struggling to differentiate between
one another by eye viewing.
b. Use the function ‘xff…’ to load both ar & ra bold.nii files into MATLAB.
c. Add another ‘subxx…bold.nii’ file as a mask to pre-select which voxel is the actual brain.
d. Run the codes below to collect all brain voxels’ correlation values between ar & ra. Finally, construct
the histogram of all r values.
