Hello,
I am using mkanalysis-sess command to configure analysis and I have some questions.
1, After run preproc-sess on raw data, why would we want to repeat all the flag using for preprocessing at mkanalysis-sess (-stc up -fwhm 5). Is it gonna effect to our f.nii if I input different value from the previous preproc-sess command ?
2. -refeventdur: I read that if we have different duration of stimuli, we can set the -refeventdur equal the mean of all stimuli durations. But in my study, the duration of stimulus depends on the reaction time of subject, so it's gonna be different for each subject. how can I manage that?
Thank you, Trinh
On 1/22/16 3:22 AM, Thục Trinh wrote:
Hello,
I am using mkanalysis-sess command to configure analysis and I have some questions.
1, After run preproc-sess on raw data, why would we want to repeat all the flag using for preprocessing at mkanalysis-sess (-stc up -fwhm 5). Is it gonna effect to our f.nii if I input different value from the previous preproc-sess command ?
The f.nii file is never affected. New files are always created. If you use different parameters, then it will automatically run preproc-sess to generate the new files (so in theory you do not have to run preproc-sess)
- -refeventdur: I read that if we have different duration of stimuli,
we can set the -refeventdur equal the mean of all stimuli durations. But in my study, the duration of stimulus depends on the reaction time of subject, so it's gonna be different for each subject. how can I manage that?
Set it to the mean across all subjects or to some reasonable value. In the end, it will have no effect on the p-values as long as all subjects have the same value
Thank you, Trinh
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Douglas Greve -
Thục Trinh