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help > RE: Group comparison Contrasts
Jun 1, 2017 01:06 AM | Alfonso Nieto-Castanon - Boston University
RE: Group comparison Contrasts
Dear Vasudev,
From that same results explorer window, simply click on 'import values'. That will create two new covariates containing the actual connectivity values for each subject between your Hippocampus seed and each of those two clusters. Then go to Tools.Calculator, select each of those two new variables in the 'Measures' list, and select each of the 'HC' and 'VF' variables in the 'subject effects' list in order to plot and calculate the average connectivity for each of those two clusters in each of the two groups.
Hope this helps
Alfonso
Originally posted by Vasudev Devulapally:
From that same results explorer window, simply click on 'import values'. That will create two new covariates containing the actual connectivity values for each subject between your Hippocampus seed and each of those two clusters. Then go to Tools.Calculator, select each of those two new variables in the 'Measures' list, and select each of the 'HC' and 'VF' variables in the 'subject effects' list in order to plot and calculate the average connectivity for each of those two clusters in each of the two groups.
Hope this helps
Alfonso
Originally posted by Vasudev Devulapally:
Dear all,
In my study i use 2 groups of subjects ( 25 healthy (HC) and 25 patients with vestibular failure (VF) . The two contrasts that i have used for studying group comparisons are 1. HC > VF and 2. HC < VF with seed values in Hippocampus, I have performed seed to voxel analysis approach and for the contrast HC < VF i have noticed 2 significant clusters in the region of insula and Superior parietal lobule ( see the attachment ).
Does this mean that average connectivity is higher in Vestibular patients compared to healthy controls ? ( since my results are for contrast HC < VF ).
If so, Does this mean connectivity to voxels in insula and superior parietal lobule is positive in both HC group and VF group and VF ( Vestibular failure ) group has higher average positive connectivity compared to Healthy controls ?
or HC is negative and VF positive
How to check whether connectivity network is positive or negative
Thanks
Vasudev
In my study i use 2 groups of subjects ( 25 healthy (HC) and 25 patients with vestibular failure (VF) . The two contrasts that i have used for studying group comparisons are 1. HC > VF and 2. HC < VF with seed values in Hippocampus, I have performed seed to voxel analysis approach and for the contrast HC < VF i have noticed 2 significant clusters in the region of insula and Superior parietal lobule ( see the attachment ).
Does this mean that average connectivity is higher in Vestibular patients compared to healthy controls ? ( since my results are for contrast HC < VF ).
If so, Does this mean connectivity to voxels in insula and superior parietal lobule is positive in both HC group and VF group and VF ( Vestibular failure ) group has higher average positive connectivity compared to Healthy controls ?
or HC is negative and VF positive
How to check whether connectivity network is positive or negative
Thanks
Vasudev
Threaded View
| Title | Author | Date |
|---|---|---|
| Vasudev Devulapally | May 30, 2017 | |
| Alfonso Nieto-Castanon | Jun 1, 2017 | |
| Vasudev Devulapally | Jun 1, 2017 | |
| Vasudev Devulapally | Jun 1, 2017 | |