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Hi Experts,

I wonder if anyone can give me any advice on a couple of things. 

1) I have some ICA spatial maps which I have resampled to the surface using bbregister and vol2surf. I can load this data in Freeview as a generic overlay (see attched). I also have a label file which is a combination of several visual areas. What I want to do is use this label as a mask and remove any activation from the ICA map overlay which falls outside of the label/mask. Is this possible using Freesurfer? In FSL I have been using fslmaths with -mas flag.

2) My next question is whether it is possible to run spatial correlations on the surface. For example, I would like to know how well my ICA component maps match with some visual areas labels I have created in Freesurfer. In FSL i have been using fslcc to run these correlations between my ROIs and the spatial maps in the volume.

Thanks in advance,

Mason 

Mason T Wells, MSc PhD student School of Optometry and Vision Sciences & Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology Cardiff University Cardiff    CF24 4HQ UK   Email: WellsMT1@cardiff.ac.uk Tel: 02920 879628 Web: Cardiff University webpage

Mason T Wells, MSc Myfyriwr PhD Yr Ysgol Optometreg a Gwyddorau’r Golwg & Canolfan Ymchwil Delweddu’r Ymennydd Prifysgol Caerdydd (CUBRIC), Yr Ysgol Seicoleg Prifysgol Caerdydd Heol Maindy Caerdydd    CF24 4HQ  DU   E-bost: WellsMT1@caerdydd.ac.uk Ffôn: 02920 879628

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