Hi
This looks to me like a scanner-related artefact - you could try
running melodic on the data to see if it picks up on the problem.
hth
Christian
On 28 Mar 2008, at 08:26, Markus Kivikangas wrote:
> Hi,
>
> I'm a bit confused here. I run FEAT for several subjects and got
> enclosed
> post-stats (just two examples attached). Some of the subjects'
> activations
> are unrealistic (Screenshot 2), some are "normal" (Screenshot).
> Moreover,
> some subjects may have this unrealistic activation with e.g.
> contrast 15
> another with e.g. contrast 14. I have used 14 EVs (Custom 3 column
> format)
> and 22 contrasts. Thresholding has been uncorrected P 0.05. What could
> explain the problem?
> <Screenshot1.jpg><Screenshot2.jpg>
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