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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Colm Connolly
February 15, 2007 07:14AM
Hi Bonnie,

You could always use a peak of 0.5 so that when the peaks of two GAM functions are in close proximity they sum to slightly greater than 1 instead of slightly greater than 2. Provided you use the same peak for ALL subjects this shouldn't make a difference when it comes performing group analyses.

If you calculate percent change scores having a max of ~1 makes interpreting them easier, even though they're slightly wrong (the peak is > 1). But since it's slightly wrong by the same amount for all subjects it shouldn't be a problem when it comes to performing group analyses.

Anyway, this works for me, but your milage may vary.

Bye,

Colm.
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Subject Author Posted

Waver peak problem?

Bonnie February 14, 2007 12:49PM

Re: Waver peak problem?

Giorgio Ganis February 14, 2007 01:05PM

Re: Waver peak problem?

Lisa T. Eyler February 14, 2007 02:05PM

Re: Waver peak problem?

Ziad Saad February 14, 2007 02:30PM

Re: Waver peak problem?

Bonnie February 14, 2007 02:48PM

Re: Waver peak problem?

Ziad Saad February 15, 2007 09:36AM

Re: Waver peak problem?

Stephanie McMains September 17, 2007 05:39PM

Re: Waver peak problem?

Gang Chen September 17, 2007 06:08PM

Re: Waver peak problem?

rick reynolds September 17, 2007 08:50PM

Re: Waver peak problem?

Colm Connolly February 15, 2007 07:14AM