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Jan 22, 2025  06:01 AM | bioash
gppi Connectivity

Hello Alfonso



The reuslts of  ROI to ROI gppi analysis, shows increased connectivity between ROI A and ROI B. When I select ROI B, that shows decreased connectivity between ROI B and ROI A for the same contrast. 


The analysis is done using bivarite regression.



Another region for a different contrast shows increased connectivity between ROI A and ROI B. When I select ROI B that shows increased connectivity between ROI B to ROI A. 



My question is are these types of findings spurious connections? I was expectng correlational analysis to probably show bi-directional connectivity. Also opposing connectivity within same rois was also strange.

Jan 31, 2025  08:01 AM | bioash
gppi Connectivity

Hello Alfonso




The reuslts of  ROI to ROI gppi analysis, shows increased connectivity between ROI A AND ROI B. When I select ROI B that shows decreased connectivity between ROI B and ROI A for the same contrast. 




The analysis is done using bivarite regression.




Another region for a different contrast shows increased connectivity between ROI A AND ROI B. When I select ROI B that shows increased connectivity between ROI B to ROI A. 




My question is are these types of findings spurious connections? I was expectng correlational analysis to probably show bi-directional connectivity. Also opposing connectivity within same rois was also strange.