Could it be that your time series are being standardized or transformed
to percent signal change at some point in your analysis?
On 02.08.2017 20:13, Ben Mansel wrote:
> This isn't related to FSL - but I am desperate and thought some of the members here would be able to assist.
> I have ran analysis on my functional MRI data using a script provided by somebody else. Problem is, I am not entirely sure what the output is.
> The numbers I have for the ROIs should be representing 'Response Magnitude'. However, there are some negative numbers. I was under the impression that a negative magnitude doesn't exist, and I am confused as to how this should be interpreted.
> Any help would be seriously appreciated.