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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September 07, 2012 09:53AM
Jackie,

I'm not so sure what you mean by 'higher activation': higher beta value or t-statistic? Generally speaking, with a bigger sample size (number of trials or subjects), you would get more reliable results, but the effect estimates would remain unbiased. In other words, more trials should lead to little changes in the effect estimates (beta values), but the t-statistic values might be higher. Is this consistent with your observation?

Gang
Subject Author Posted

Trial numbers for comparison

Jackie September 07, 2012 08:28AM

Re: Trial numbers for comparison

gang September 07, 2012 09:53AM

Re: Trial numbers for comparison

Jackie September 07, 2012 10:24AM

Re: Trial numbers for comparison

gang September 07, 2012 10:27AM

Re: Trial numbers for comparison

Jackie September 07, 2012 11:15AM

Re: Trial numbers for comparison

gang September 07, 2012 12:12PM