>This would be a very laborious way I guess. Besides how would I describe
>those activations, I have to provide some measure, like center of
>activation, amount of activated voxels anything. In other words I need a
>nice table don't I ? :-)
Yes, I agree this requires more work than simply copying some values
from a pre-existing table but in the end, it is far more informative
-- hopefully for both you and your readers. In essence, you'll need
some anatomical reference guide such as Duvernoy's human brain atlas
(my preference) and you'll have to overlay the activation on your
mean structural and using MRIcro (if that's your preference), go
through and determine which macro-anatomical regions are showing
activation. One very brief and hypothetical description could be:
Activation was observed in a single, large cluster encompassing
multiple brain regions bilaterally. Within the occipital lobes, this
included regions of the calcarine fissure, lateral extra-striate
areas including posterior regions of the lingual and fusiform gyru,
and middle occipital gyrus. More anteriorally, activation extending
laterally into the inferior and middle temporal gyri...
The level of anatomical precision is jointly determined by the
clarity of mean structural (which reflects the anatomical variability
of your sample) and the effort you put into the description. The
more precise the description, the better -- and yes, this requires some work.
If you feel like this isn't sufficiently quantitative, Russ's
suggestion offers an additional way of reporting the data that you
could put into a table. It would still be worth describing the
activation in the text, though.
Cheers,
- Joe
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