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

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gozde
February 06, 2020 01:44PM
Greetings everyone,

Firstly, thanks everyone for asking questions and providing answers. I am new to the fMRI, and this is my first time asking a question in this forum. Please excuse the wording of my questions. Would you like to provide information about the following questions?

My questions are about @auto_tlrc command. In the past, default -pad_base was 40. Recently, the default -pad_base is 15 (Version AFNI_19.3.16 'Nero').
a) What is the purpose of pad_base?
b) What was the reason that the default pad_base was changed?
c) What is the impact using big or small pad_base input?
d) What are the pros-cons of using bigger pad_base?

Thanks and have a nice day
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Subject Author Posted

impact of zero-padding on spatial normalization

gozde February 06, 2020 01:44PM

Re: impact of zero-padding on spatial normalization

Daniel Glen February 06, 2020 05:32PM

Re: impact of zero-padding on spatial normalization

gozde February 07, 2020 01:06PM