Re: [Marsbar-users] defining ROIs: native space v base space

[annak <ann...@gm...>]

We're drawing ROIs using maps thresholded at T=4.5 (eg by combining this map
with aal regions, or selecting a specific cluster within the thresholded
map). When we overlay the newly created ROIs with the original thresholded
map using MRIcron, we find regions of the roi which do not overlap with the
map. 

When we exported the ROIs using base space, the ROIs were smaller than
expected. When we exported the ROIs using native space, they aligned well
with the clusters we wanted in the thresholded map, but when we opened the
same maps/ROIs on a computer other than the one originally used to create
the ROIs, there were regions of the ROIs extending farther than the clusters
on the original thresholded map.

We're wondering how the distinction between using base and native space for
exporting ROIs is leading to this difference in alignment of ROIs from the
maps they were derived from.

Thanks!
Anna


Matthew Brett wrote:
> 
> Hi,
> 
> On Fri, Sep 7, 2012 at 9:26 PM, annak <ann...@gm...> wrote:
>>
>> Hi,
>>
>> Can you please explain the difference between native space and base space
>> in
>> more detail than the manual does?
> 
> Can you say more about what kind of thing you would like explained?
> For example - are you thinking of a particular analysis?
> 
> Best,
> 
> Matthew
> 
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and 
> threat landscape has changed and how IT managers can respond. Discussions 
> will include endpoint security, mobile security and the latest in malware 
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Marsbar-users mailing list
> Mar...@li...
> https://lists.sourceforge.net/lists/listinfo/marsbar-users
> 
> 

-- 
View this message in context: http://old.nabble.com/defining-ROIs%3A-native-space-v-base-space-tp34404608p34414649.html
Sent from the MarsBaR mailing list archive at Nabble.com.