Hi Carlos,
You’re right, it should be very close to zero for the middle volume, as that is what it registers to. Could you post one of the plots that shows a different pattern?
Thanks,
Eelke
> On 16 Sep 2015, at 04:11, Carlos Gonzalez-Garcia <[log in to unmask]> wrote:
>
> Dear FSL users,
>
> looking at motion plots after preprocessing some participants' data, I noticed that for several runs the absolute displacement does not fall to zero around the middle volume. If I'm not wrong, that should be the case.
>
> Any ideas of why could this be happening?
>
> Thanks in advance,
> Carlos.
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