Hello-
I'm a little confused by this answer. I was under the impression that using
FE analyses to combine single-subject sessions was a dead-end as far as
group analyses go. The FEAT Details web page states,
"Also note that you should probably not feed up second-level
FE analyses to higher-level analyses; you should use a full
mixed-effects analysis at all levels."
Is this not counter to what is written below, or am I misreading something?
Thanks,
Jim Porter
TRiCAM Lab Coordinator
Elliott Hall N437
612.624.3892
www.psych.umn.edu/research/tricam
On Wed, 8 Aug 2007 07:41:19 +0100, Steve Smith <[log in to unmask]> wrote:
>Hi - I would combine across session within-subject using FE for each
>subject separately at second level and then feed this up into a cross-
>subject analysis.
>Cheers, Steve.
>
>
>On 8 Aug 2007, at 02:39, Matthew Hoptman wrote:
>
>> Hi all,
>> I'd like to set up an analysis in which I do a cross group
>> comparison on
>> conditions from two different tasks collected in the same scanning
>> session
>> (but in different runs). I see how to do paired t-tests, but this
>> is sort
>> of like doing a repeated measures ANOVA with a grouping variable,
>> and I
>> can't seem to get it to work out. When I set up the paired aspect,
>> the
>> groups selector seems to default to a single column. That makes it
>> hard to
>> do the grouping part.
>>
>> I guess what I'm thinking is:
>>
>> Group Patients Controls Condition S1 S2 S3
>> 1 1 0 1 1 0 0
>> 1 1 0 1 0 1 0
>> 1 1 0 1 0 0 1
>> 1 1 0 2 1 0 0
>> 1 1 0 2 0 1 0
>> 1 1 0 2 0 0 1
>> 2 0 1 1 1 0 0
>> etc.
>>
>> Any ideas?
>> Thanks,
>> Matt
>
>
>------------------------------------------------------------------------
>---
>Stephen M. Smith, Professor of Biomedical Engineering
>Associate Director, Oxford University FMRIB Centre
>
>FMRIB, JR 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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