Re: [Freesurfer] shift to account for hemodynamic response

2018-02-09 Thread Sarah Cole
Thank you so much.

On Fri, Feb 9, 2018 at 11:48 AM, Douglas Greve 
wrote:

> It is already built into the HRF model. If you need to shift them more or
> less than what is in the model, that can be accommodated. If you use the
> -spmhrf option, then you will get the same HRF as is used in spm.
>
> On 2/6/18 11:45 PM, Ashley Cole wrote:
>
> Dear experts,
>
> I just have switched from SPM to Freesurfer. I am wondering if in FSFAST
> analysis, we require to shift the regressors in time to account for the
> delay in hemodynamic response?
>
> Thanks
>
>
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Re: [Freesurfer] shift to account for hemodynamic response

2018-02-09 Thread Douglas Greve
It is already built into the HRF model. If you need to shift them more 
or less than what is in the model, that can be accommodated. If you use 
the -spmhrf option, then you will get the same HRF as is used in spm.



On 2/6/18 11:45 PM, Ashley Cole wrote:

Dear experts,

I just have switched from SPM to Freesurfer. I am wondering if in 
FSFAST analysis, we require to shift the regressors in time to account 
for the delay in hemodynamic response?


Thanks


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The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
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but does not contain patient information, please contact the sender and properly
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