Back to PLS Helpseed PLS from group to within subject
Posted on 04/27/07 16:03:09
Number of posts: 41
hi all ~
firstly, thanks for adding the 'Create Batch File' in the GUI analysis window - it's very helpful for template create for batch processing.
secondly, i have a task - that i am wondering how to best/most efficiently accomplish. let me know what the best tools within the PLS datamats/gui framework i can use to do the following:
- i have a group analysis distinguishing some conditions, producing ROIs that distinguish those conditions
- i can extract information about those ROIs (generate a cluster report etc..)
- now i want to extract the activity values for these ROIs but from the datamats created WITHIN subjects, not from the group datamat
will the cluster report generated from the group analysis be sufficient for an extracting within subjects if the data dimensions are the same? or is there a different way within PLS tools to do this?
thanks very much
agatha
firstly, thanks for adding the 'Create Batch File' in the GUI analysis window - it's very helpful for template create for batch processing.
secondly, i have a task - that i am wondering how to best/most efficiently accomplish. let me know what the best tools within the PLS datamats/gui framework i can use to do the following:
- i have a group analysis distinguishing some conditions, producing ROIs that distinguish those conditions
- i can extract information about those ROIs (generate a cluster report etc..)
- now i want to extract the activity values for these ROIs but from the datamats created WITHIN subjects, not from the group datamat
will the cluster report generated from the group analysis be sufficient for an extracting within subjects if the data dimensions are the same? or is there a different way within PLS tools to do this?
thanks very much
agatha
Replies:
got it...
Posted on 04/30/07 16:10:41
Number of posts: 41
...cluster report does work ...but takes a long time (if have lots of voxels/peaks & events)... so i am defaulting to using text files of just a few peaks for the extraction...
al.
al.
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I'm Online
Posted on 04/30/07 16:55:52
Number of posts: 291
First reply the message you posted last time: The cluster report generated from a group analysis is different from the one within a subject. If you are talking about Multiple Voxel Extraction, the voxel intensities that you extracted from the result of group analysis can be used for the seed analysis within a subject. This is because you have *voxeldata.txt as well as *grp?_subj?_voxeldata.txt when you do Multiple Voxel Extraction. For *voxeldata.txt, it is already in the order of "subject-in-condition-in-group". For *grp?_subj?_voxeldata.txt, it is just 1 subject with several conditions, so be careful with the order of rows.
For your latest post: The time for a cluster report depending on the size of the clusters. So when you increase your threshold, it will be faster with less clusters.
For your latest post: The time for a cluster report depending on the size of the clusters. So when you increase your threshold, it will be faster with less clusters.
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Posted on 05/01/07 09:35:54
Number of posts: 41
thanks jimmy - i forgot about that extra output. that's very useful!
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