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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Juan
January 31, 2017 11:46PM
Hi, List experts,

I have a question in my mind for long time. If I want to do the ROI analysis for the fMRI data (say, block design experiment), can I also get the data point across time (i.e., 0-15s) as following example?

To illustration, when we let a person look at a stimulus, we will find a certain pattern of brain activation in the fusiform gyrus. At scan 1 the stimulus was presented; we can see that the BOLD response is sluggish, only 3 scans later (= 4.5 seconds) the activity reaches its peak. I know this is very common when we do the event-related design experiment. Does it meant that we can not get these kind of data points for block-design experiment?

Any comments are much appreciated.
J
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Block design: BOLD response

Juan January 31, 2017 11:46PM

Re: Block design: BOLD response

gang February 01, 2017 11:24AM

Re: Block design: BOLD response

Juan February 01, 2017 12:02PM