This webpage about designing efficient fMRI experiments may also help:
http://www.mrc-cbu.cam.ac.uk/Imaging/Common/fMRI-efficiency.shtml
Rik
> Dear Friends:
>
> I'm designing a ER fMRI study of attention. I want to differentiate the
> signal between cue and target. I know the interval between the cue and
> target should be a exponential distribution. The interval between cue and
> target should not be too short, e.g. < 400ms, but also should not too long.
> Otherwise cue is not cue anymore. Could anyone give me a suggestion what is
> the best range of intervals between cue and target?
>
> Thanks
>
> Jiansong
>
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