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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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October 22, 2014 02:39PM

Registered: 11 years ago
Posts: 16

Hi Rick,

Thanks for your response! Yes the variation is only during the ITIs. On each trial, a stimulus is presented at 0s for 0.5s, and after a brief 0.4s, a second stimulus is presented for another 0.5s. After that, no stimuli is presented until 13s, and this stimulus at 13s stays on the screen for 0 to 5s (this interval is determined by subject's response time). The ITI starts at 18s, and ends between 22s to 28s.

For my experiment, I need the data from the first 13s. And I've tried using a gamma function before. But since another stimulus is presented at 13s, I was just wondering if I also need to model the signals for the stimulus at 13s.

Thanks so much for your help in advance!

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Subject	Author	Posted
stimulus timing file in 3dDeconvolve	qy	October 20, 2014 11:34AM
Re: stimulus timing file in 3dDeconvolve	Peter Molfese	October 20, 2014 12:06PM
Re: stimulus timing file in 3dDeconvolve	qy	October 20, 2014 02:47PM
Re: stimulus timing file in 3dDeconvolve	Peter Molfese	October 20, 2014 03:06PM
Re: stimulus timing file in 3dDeconvolve	qy	October 20, 2014 03:13PM
Re: stimulus timing file in 3dDeconvolve	Peter Molfese	October 20, 2014 09:35PM
Re: stimulus timing file in 3dDeconvolve	qy	October 21, 2014 12:15PM
Re: stimulus timing file in 3dDeconvolve	gang	October 21, 2014 02:28PM
Re: stimulus timing file in 3dDeconvolve	qy	October 21, 2014 03:01PM
Re: stimulus timing file in 3dDeconvolve	gang	October 21, 2014 04:37PM
Re: stimulus timing file in 3dDeconvolve	rick reynolds	October 22, 2014 08:45AM
Re: stimulus timing file in 3dDeconvolve	qy	October 22, 2014 02:39PM
Re: stimulus timing file in 3dDeconvolve	rick reynolds	October 22, 2014 04:20PM
Re: stimulus timing file in 3dDeconvolve	qy	October 22, 2014 04:34PM
Re: stimulus timing file in 3dDeconvolve	qy	October 22, 2014 05:12PM
Re: stimulus timing file in 3dDeconvolve	rick reynolds	October 24, 2014 11:55AM