Dear SPMers,
>
>I have posted this question several days ago but nobody replied. Could
anybody kindly have a look at this?
I am attempting to model the connectivity on a set of factorial design
>data which include 4 conditions including A1 and A2; and B1 and B2.
>
>I want to construct the regressors in the form of "A1-A2" and "B1-B2" as
>modulatory inputs to enter the model. Could anybody please tell me how to
>construct the regressors representing the contrast of two conditions,
i.e.: how to set up one regressor contrasting the two conditions liking "1-
1" {A1(1) and A2(-1)} in SPM?
>
>Thanks in advance
>
>Laurence
On Thu, 3 Jan 2008 23:45:31 +0000, <Laurence> <Wang>
<[log in to unmask]> wrote:
>Dear SPMers,
>
>I am attempting to model the connectivity on a set of factorial design
>data which include two conditions A (including A1 and A2 level) and B
>(including B1 and B2 level).
>
>I want to construct the regressors in the form of "A1-A2" and "B1-B2" as
>modulatory inputs to enter the model. Could anybody please tell me how to
>construct the regressors representing the contrast of two levels, i.e.:
>how to set up one regressor contrasting the two levels liking "1-1" {A1(1)
>and A2(-1)} in SPM?
>
>Thanks in advance
>
>Laurence
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