From: Douglas N Greve <greve@nmr.mgh.harvard.edu>
Subject: Re: [Freesurfer] How does Optseq2 arrange order of
        conditions?
To: freesurfer@nmr.mgh.harvard.edu
Message-ID: <57A4B4B3.1000601@nmr.mgh.harvard.edu>
Content-Type: text/plain; charset=UTF-8; format=flowed

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On 08/01/2016 04:22 AM, ? ?? wrote:
>
> Dear Douglas,
>
> Thanks for your explanation. These information are helpful to me.
>
> >I'm not sure what you mean. How can it be a delay if it is after
> thetrial is over?
>
> I?m sorry for I didn?t describe my second question well. I think I can
> take another situation to describe my question.
>
> If I have a experiment that present stimulus until participants
> response, and I know the average RT of this experiment is 1500 ms
> after pilot test.
>
> In this situation, should I +/- the duration of jitter/null condition
> in terms of the duration of each stimulus?
>
> For example, if a part of sequence Optseq2 output is ? Con1 Null(500
> ms) Con2 Null(1500 ms)?, and one of participants takes 1000 ms to
> response for Con1.
>
> Should I add 500 ms to the first Null? or I don?t need to anything?
>
> Thanks for your reading.
>
> Best Regards,
>
> Chih-Hao
>
>
>
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--
Douglas N. Greve, Ph.D.
MGH-NMR Center
greve@nmr.mgh.harvard.edu
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