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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rick reynolds
August 17, 2021 08:16PM
Hello,

Okay, a year late is presumably better than never... sorry for letting this slip through.

Using 0.1 would be fine in this case. One effect of oversampling the time series is that it makes the deconvolution/reconvolution steps almost inverses, which avoids some side effects of the PPI filter. It also nicely allows for non-grid stimulus timing.

For reference, a slightly different example of a PPI analysis comes with the AFNI_data6 class data. The README.txt file is actually the main script. See AFNI_data6/FT_analysis/PPI.

- rick
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Subject Author Posted

PPI question stimulus onset times and TR grids

jyaros August 16, 2020 10:03PM

Re: PPI question stimulus onset times and TR grids

jyaros August 24, 2020 03:36PM

Re: PPI question stimulus onset times and TR grids

rick reynolds August 17, 2021 08:16PM