I am trying to find a probabilistic map of the visual cortical area V3A. 

I have not been able to find this particular area in the standard atlases in FSL or FreeSurfer. The Jülich Histological atlas contains a V3V ROI but not V3A.

Do any of you know have this ROI as a file or do you know of an atlas which contains it?

An estimation based on an experiment, e.g. an average from retinotopic maps of healthy subjects would also be very helpful.

All the best,

Anders