Steve,
I've read the various model setup settings described in the FEAT manual.
I've used AFNI in the past, and FSL is a little more unfamiliar. I know in
AFNI you can use minlag and maxlag in your GLM model where you do not pre-
determine the HRF model shape. You simply specify the time lag(s) you
expect the your response to a stimulus may have. I was wondering if you can
do the same thing with FSL.
On Thu, 17 Apr 2008 08:37:36 +0100, Steve Smith <[log in to unmask]>
wrote:
>HI - please see the various model setup setting described in the FEAT
>manual.
>Cheers, Steve.
>
>
>On 16 Apr 2008, at 18:26, Michael wrote:
>> Hello,
>>
>> How do you incorporate a time delay of the stimulus onset for the
>> model in
>> FEAT?
>>
>> For example, I have stimulus on period of 7 TR's (TR = 2 seconds)
>> and an
>> off time of 7 TR's.
>>
>> Thus,
>>
>> 1's = on, 0's = off-time
>>
>> 1 1 1 1 1 1 1 0 0 0 0 0 0 0
>>
>> I'm not using a pre-determined model shape like a gamma function, etc.
>>
>> How do you put a lag of, say, 3 TR's (or six seconds) in your full
>> model
>> setup.
>>
>> Thanks,
>>
>> Michael
>>
>
>
>---------------------------------------------------------------------------
>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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