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  

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December 09, 2004 03:10PM
Hi, can someone tell me in user-friendly steps how to determine a low pass filter cutoff value, in general, and for my specific study ? (i.e. i want to remove any high frequency noise using the 3dFourier tool)

TR = 2.4 s
Block design
12 sec off/ 12 sec on
5 block types, each repeated once per scan

Sample Scan (240 s total):
blank-cndA-blank-cndB-blank-cndC-blank-cndD-blank-cndE-blank-cndA-blank-cndB-blank-cndC-blank-cndD-blank-cndE

Thanks!!
Mark
Subject Author Posted

low pass filter

mark December 09, 2004 03:10PM

Re: low pass filter

pirate December 10, 2004 04:12AM