2011/1/26 ½ªallen <[log in to unmask]>:
> When we use Marsbar for a ROI and time course analysis, we usually use PSTH
> value for time course analysis, however, there is also a "beta" value
> option in the workshop, which each value represents for the beta value of
> each parameter in the modeling matrix.
> My question is that, for a typical condition A (like the example I attach in
> email), can I use this beta value to represent the mean activation of ROI?
> If so, why the magnitude has so big difference compare to the PSTH value?
Sorry to take so long to reply. I've Cc'ed the marsbar list - I think
it's the one you want.
Sorry if I'm being slow, but what exactly are you doing in the marsbar
interface to get the PSTH and beta values in your workspace?