open-discussion
open-discussion > RE: VBM results interpretation
Jun 19, 2012 11:06 AM | Ged Ridgway
RE: VBM results interpretation
Hi Tanmay,
It's not as far outside the brain as I had initially understood. This is probably just the issue of low variance outside the brain. See e.g. Reimold's or my paper:
http://www.ncbi.nlm.nih.gov/pubmed/16208...
http://www.ncbi.nlm.nih.gov/pubmed/22037...
And try making a tighter mask (are you using absolute/relative threshold masking or an explicit mask, or just implicit?)
Which image are you overlaying your results onto? I would recommend using ImCalc to create a mean (or median) of the spatially normalised bias corrected images, as this is probably the most representative image for your subjects.
Best,
Ged
It's not as far outside the brain as I had initially understood. This is probably just the issue of low variance outside the brain. See e.g. Reimold's or my paper:
http://www.ncbi.nlm.nih.gov/pubmed/16208...
http://www.ncbi.nlm.nih.gov/pubmed/22037...
And try making a tighter mask (are you using absolute/relative threshold masking or an explicit mask, or just implicit?)
Which image are you overlaying your results onto? I would recommend using ImCalc to create a mean (or median) of the spatially normalised bias corrected images, as this is probably the most representative image for your subjects.
Best,
Ged
Threaded View
Title | Author | Date |
---|---|---|
Tanmay Nath | Jun 11, 2012 | |
Ana Enea | Nov 6, 2013 | |
Ged Ridgway | Nov 6, 2013 | |
Ana Enea | Nov 6, 2013 | |
Ged Ridgway | Nov 6, 2013 | |
Ana Enea | Nov 6, 2013 | |
Rayana Braich | Jul 18, 2012 | |
Ged Ridgway | Jun 18, 2012 | |
Tanmay Nath | Jun 19, 2012 | |
Ged Ridgway | Jun 19, 2012 | |
Tanmay Nath | Jun 19, 2012 | |