Hi - the most likely cause of the problem for EV3 is that the times (eg
the first time, 214seconds) is out of the range of the dataset - have you
set the number of timepoints and the TR correctly such that 214s lies
within the experiment?
Cheers, Steve.
On Mon, 29 Aug 2005, Bosky wrote:
> Hello List,I am having some problems setting up a model for an event
> related design. I select the full model setup and define the EVs( there
> are 7 EVs) in the custom 3 column format. My first two EVs setup fine
> but when I setup a third one , it gives me the following error: Problem
> with processing the model : No valid [onset duration strength] triplets
> found in <textfile> child process exited abnormally. The EVs are as
> follows:There are 3 phases to the experiment:Phase 1 : where two colors
> are presented red and blueEV1= Red Phase1EV2 = Red Phase 1Phase 2: Where
> few reds are coupled with an auditory stimuli:EV3: Red + auditory
> stimuliEV4: Red Phase 2EV5:Blue Phase 2Phase 3: Where no auditory
> stimuli are coupled to the colorsEV6: Red EV7:BlueThe aim is to look at
> differences in response to each color in each of the phases and also
> across phases- eg Red in phase 3 vs red in phase 1., Within phases : red
> vs blue in phase 3 The EVs were setup in the following manner :EV1:4 1 1
> 13 1 1
> 19 1 1
> 21 1 1
> 22 1 1
> The problematic EV:214 1 1
> 219 1 1
> 223 1 1
> 258 1 1
> 260 1 1
> 264 1 1
> 277 1 1 Why am I getting this error for the model setup? Is it because
> of the strengths- 0 or 1? At the moment I have assigned 1 to all the
> EVs, should I be assigning 1s to the Evs with auditory stimuli and 0 to
> others? How do I decide? Thanks in advance,Bosky
>
>
> Laboratory for the Study of Emotion and Cognition,
> Department of Biomedical Engineering
> Stony Brook University,
> New York, 11790
> Phone- 631-444-8405/ 631-444-7868
>
>
>
--
Stephen M. Smith DPhil
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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