Dear SPM experts,
We have a self-paced memory experiment, composed of 3 sessions. Each 20s trial is composed of a recognition phase which ends when the subject gives a response, and which is followed by a recall phase.
Based on the nature of the cue and the response of the subject, we defined several types of recall that we would like to compare. Each type of recall was reffered as a condition, but because of randomization issues and subjects performances, we did not have the same number of conditions in each session.
In the 1st level analysis, we created multiple conditions files (1 for each session of each subject), but SPM did not run when some conditions are empty (empty vector). How can we deal with this problem? Do we have to manually delete these empty fields in the mat files?
Thank you in advance.
Sincerely,
Anne-Lise
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Lyon Neuroscience Research Center, France
CNRS UMR5292 - INSERM U1028 - UCBL1
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