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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gang
July 17, 2021 07:58PM
Stef,

> Specifying an initial p-value of 0.001 cluster-extend thresholded (k=32) to achieve alpha = 0.05,
> I find effects of group and the covariate, but no interaction.

The conventional cluster-based adjustment for multiple testing can be excessively conservative ( [afni.nimh.nih.gov] ). So, try setting voxel-wise p-value to 0.05 and see if you could identify some interesting results.

> The problem is also that some of the ROIs are quite small, for instance the midbrain ROI only contains 60 voxels.

If you have 6 or ROIs, it might be possible to adopt the Bayesian multilevel approach as described in the NeuroImage paper you mentioned earlier.

Gang
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Subject Author Posted

BML for ISC analysis

s.meliss July 06, 2021 06:46AM

Re: BML for ISC analysis

gang July 07, 2021 11:37AM

Re: BML for ISC analysis

s.meliss July 08, 2021 12:27PM

Re: BML for ISC analysis

gang July 08, 2021 07:45PM

Re: BML for ISC analysis

s.meliss July 16, 2021 07:04AM

Re: BML for ISC analysis

gang July 17, 2021 07:58PM