Re: How the ROI should be defined in PSC calculation?

Hi,

>         I have a question about the ROI definition and PSC calculation. When
> we calculate the PSC of ROIs, whether those ROIs must be identified by an
> independent data (or sessions). Could we get the ROIs and calculate their
> PSC in the same data?

It's possible to get the % signal change from the ROI, if you found
ROI with the same comparison, but of course the value will be biased
by the selection, so you could not sensibly use the % signal change
value to - for example - compare to other  ROI / % signal change
estimates.

Best,

Matthew

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