The multiplication of the timecourses by the maps gives you the answer. So
if the regions you are looking at is positive in the map, and the timecourse
decreases during the stimulation, then it is doing so in the raw fMRI data.
VDC
> -----Original Message-----
> From: SPM (Statistical Parametric Mapping)
> [mailto:[log in to unmask]] On Behalf Of Joseph Dien
> Sent: Monday, November 26, 2007 1:37 PM
> To: [log in to unmask]
> Subject: Re: [SPM] independent component analysis of fMRI data
>
> Hi,
> that's what I mean. At least when I look at it, there are no
> values attached to the color scale (as in the attached figure). So
> anyway, the question is, have you verified that the product of the
> loading and the activation is indeed negative? If the product is
> positive, then the mystery is solved.
>
>
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