AFNI Message Board

Dear AFNI users-

We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:

https://discuss.afni.nimh.nih.gov

Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.

The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.

Sincerely, AFNI HQ

History of AFNI updates  

Previous Message Next Message
Message List New Topic Print View
|
Daniel Glen
April 02, 2020 10:55AM
Still not sure exactly what you want, but you can take the contralateral coordinates for most template spaces (MNI variants, TLRC) approximately by negating the x coordinate (RAI or LPI order). So if you are interested in a coordinate at (10,100,100), then you can also look at (-10,100,100). The human brain is only approximately symmetric, so you might consider a sphere around each point. See 3dUndump for placing spheres. Also consider using the left and right regions from an atlas. whereami can provide the mask regions, or you can specify atlas regions with 3dcalc. See our class documentation for ROIs below (pages 30,31,35).

[afni.nimh.nih.gov]
Reply Quote
RSS
Subject Author Posted

A question about the ROI created of activated area

wallypsy March 31, 2020 11:02PM

Re: A question about the ROI created of activated area

Daniel Glen April 01, 2020 09:50AM

Re: A question about the ROI created of activated area

wallypsy April 01, 2020 07:47PM

Re: A question about the ROI created of activated area

Daniel Glen April 02, 2020 10:55AM