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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Jeff Phillips
February 12, 2009 12:19PM
I may have a more knotty interpolation problem. In a recent fMRI session, we accidentally collected one of 4 runs with the wrong protocol, using a TR of 2070 ms instead of 2000 ms. This is a periodic visual stimulation paradigm, so I think the precision of the timing does matter a bit more than with a block design. I was hoping to salvage this run by interpolating my dataset from 138 volumes @ 2070 ms to ~142-143 volumes @ 2000 ms. Is this feasible, and if so, how would I go about it? I do recall reading in AFNI documentation that frequencies > 1/2 of TR could not be well interpolated, and perhaps that will be a problem here.

Thanks,

Jeff
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Subject Author Posted

temporal interpolation

Jon T March 16, 2007 09:01AM

Re: temporal interpolation

Jon T March 16, 2007 01:07PM

Re: temporal interpolation

Daniel Glen March 16, 2007 02:45PM

Re: temporal interpolation

Jont T March 20, 2007 01:09PM

Re: temporal interpolation

Jeff Phillips February 12, 2009 12:19PM

Re: temporal interpolation

Bob Cox February 12, 2009 02:37PM