We have an fMRI trial design at which different events happen at different
times in a trial. We would like to plot the timecourse of the BOLD signal
from the beginning of the trial until the end of the trial. We think we need
an unweighted or “raw” form of the BOLD signal, for the values that appear
in the array y depend on the details of the scan number within a trial that
is provided when calculating a contrast.
Assuming that we need a raw timecourse, we tried the approach suggested by
John Ashburner for SPM2 in item 006199 from the SPM discussion group, but
could not get it working for SPM5, which does not support spm_get(…).
We would be very grateful for advice.
Fabian Grabenhorst
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