Dear Helmut,<br/><br/>Thank you very very much!<br/><br/>Best,<br/><br/>Sisi
At 2014-08-14 07:07:10, "Helmut Nebl" <[log in to unmask]> wrote:
>Dear Sisi,
>
>yes. Simply put, the idea is that during rest nothing particular happens, while the conditions 0-back and 2-back lead to some (de)activations which you try to detect by setting up a model with onsets, durations resulting in an expected timecourse. You might want to look at a recent paper by Cyril Pernet (2014, Front Neurosci, http://dx.doi.org/10.3389/fnins.2014.00001 ). I wouldn't agree on every conclusion of that paper, but that's another issue and not relevant for your experiment, as you're most likely interested in 2-back vs. 0-back. So even if you modeled rest you would end up looking at 2-back vs. 0-back, and this contrast should be very close to the contrast 2-back vs. 0-back in a model without a regressor for rest.
>
>Best,
>
>Helmut
>
>
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