Dear FSL user,
I am using PE files to calculate the percentage signal change via featquery for a single voxel for
each of my subjects (total n = 28).
Given that I am using PE file, an anatomical mask, and a mm coordinate for a single voxel, using
featquery tool with convert PE/COPE to % signal change option turned on, I should get % signal
change for each of my subjects for that single voxel.
However, several of the subjects report file comes out with a coordinate that I did not specify.
For example, I specified (-16 -4 -16) for my mm coordinates. However, several of my subjects'
report file comes out with % signal change values with the following coordinate (90 -126 -72).
This happens with one third of my subjects. Is there something that I am doing wrong? How do I
deal with those results with the coordinates that I did not specify?
I am trying to plot mean % signal change plot for all 28 subjects, but I am not sure what to do with
those subejct's mean % signal change that comes out with a coordinate that I did not specify.
Any input would be a great help!
Thank you in advance.
From Sang
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