hi,
i have two questions:
1) i have an event-related design. each event (a stimulus) is coupled with
a rating and categorized according to it (into two conditions). sometimes,
subjects missed a rating, i.e. yielded no score. How do i deal with these
events that weren't rated? do i have to model them out, i.e. as a
third "error" condition, so that they don't fall into the iti (and thus
the baseline)? fortunately, they didn't occur often... or would it be
legitimate to ignore those only specifying a model with the events that
were rated?
2) i had 4 scanning sessions. would it be o.k. to treat everything as
one long scan?
any ideas?
thanks,
nicole
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