Hi - yes, this looks correct. You don't need to tell FEAT anything more
about this being event-related; the 3s in the middle columns tell it all
it needs to know about the shortness of the modelled periods.
Thanks, Steve.
On Sun, 27 Apr 2003, Darren Schreiber wrote:
>
> While I am trying to learn higher level analysis for the more simple
> experiment I am doing, perhaps I can get some help with the event
> related design I have.
>
> This experiment has seven cells in a 2x3+1 design:
>
> T U R
> _________
> | L
> P | / M A
> | C
> |
> N | T U R
>
>
> One subject gets the stimuli as follows: (r=3 seconds rest, a=3 seconds
> to answer, LCMATUR=duration 3 seconds)
>
> rrrrLarTarMarAarCarUarRarCarMarAarTarLar etc...
>
> If I understand FSL correctly, I would model this using the Custom (3
> Column Format) as follows:
>
> Filename "S03L1"
> 12 3 1
> 93 3 1
>
> Filename "S03T1"
> 21 3 1
> 84 3 1
>
> Filename "S03M1"
> 30 3 1
> 75 3 1
>
> etc...
>
> Does that look about right?
>
> Is there something else I need to do to let FEAT know it is an event
> related design? Any changes necessitated by the event related design?
>
> Darren
>
Stephen M. Smith MA DPhil CEng MIEE
Associate Director, FMRIB and Analysis Research Coordinator
Oxford University Centre for Functional MRI of the Brain
John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
+44 (0) 1865 222726 (fax 222717)
[log in to unmask] http://www.fmrib.ox.ac.uk/~steve
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