Dear Fslers,
I have two seperate questions regarding design and data.
Q1) dealing with outlier data points
For a block design with 200 time points having a huge relative motion
jump at 154th time point, is it valid to interpolate that time point
with the 153rd and 155th time point and then process the data? i think
in an event related model, one could add an additional EV with a 1 at
the 154th time point. this would however not be possible i think for a
block design.
Q2) i have read the posts discussing the classic 3 condition parametric
modulation case where the correct contrast is [-1 0 1].
for a 4 condition parametric modulation, the contrast for a linear
effect from A-> D would be [-3 -1 1 3 ]. is this correct? if one would
model [-1 0 1 2], would that also be similar?
thanks for the help in advance
Kosha
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