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help > Why does the same condition in two analyses produce different results?
May 24, 2020 05:05 AM | ys1j13
Why does the same condition in two analyses produce different results?
Dear experts and Alfonso
I recently wanted to conduct temporal network analysis, so I used temporal decomposition option in SETUP.
There is a condition called S which is entire one of four fMRI session we conducted.
I divided this session into 51 windows using temporal decomposition.
After I divided the session S, there is still intact session condition S in SETUP.
So, I expected that the intact condition S allows me to perform network analysis for entire S session.
And, I performed the analysis and produced a results for entire S.
But I wanted to make sure, so I removed the temporal conditions (so that there is only condition S) and conduct additional analysis using that condition (that there is only one condition S).
And, I produced another results for entire S using the reduced condition setup.
I anticipated that the two analysis gave me identical results, but they were clearly different (although general trend was similar).
In my knowledge, except the removing session effect in Denoising step, there is no calculation step which influence the results those analyses.
Is there a reason which causes this difference?
Best regards,
YJ
I recently wanted to conduct temporal network analysis, so I used temporal decomposition option in SETUP.
There is a condition called S which is entire one of four fMRI session we conducted.
I divided this session into 51 windows using temporal decomposition.
After I divided the session S, there is still intact session condition S in SETUP.
So, I expected that the intact condition S allows me to perform network analysis for entire S session.
And, I performed the analysis and produced a results for entire S.
But I wanted to make sure, so I removed the temporal conditions (so that there is only condition S) and conduct additional analysis using that condition (that there is only one condition S).
And, I produced another results for entire S using the reduced condition setup.
I anticipated that the two analysis gave me identical results, but they were clearly different (although general trend was similar).
In my knowledge, except the removing session effect in Denoising step, there is no calculation step which influence the results those analyses.
Is there a reason which causes this difference?
Best regards,
YJ
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Title | Author | Date |
---|---|---|
ys1j13 | May 24, 2020 | |
Alfonso Nieto-Castanon | May 27, 2020 | |